Bulletin 836T - Pressure Controls, Traditional Machine Tool
Bulletin 836T - Pressure Controls, Traditional Machine Tool
Bulletin 836T - Pressure Controls, Traditional Machine Tool
Pressure Controls
Product Overview
Bulletin 836T Pressure Controls, Traditional Machine Tool
Operating ranges from 30 in. Hg vacuum5000 psi Independently adjustable range and differential Copper alloy and stainless steel bellows 2- and 4-Circuit contact block Pressure difference controls available 1/4 in. and 3/8 in. N.P.T. and O-ring straight thread connections Type 4 & 13 and Type 7 & 9 and 4 & 13 combination enclosures
Table of Contents
Product Overview ...... this page Technical Data ............ 13-25 Product Selection ...... 13-33 Modifications............... 13-40 Accessories.................. 13-41 Conversion Kits .......... 13-42 Factory Options.......... 13-43 Wiring Diagrams......... 13-44 Approximate Dimensions................... 13-47
0 1 2 3 4
Standards Compliance
(For file and guide numbers, see the table below)
Certifications
5 6
Hazardous Location Enclosure not CE compliant. All other enclosed devices are CE compliant
Product Overview
7 8
Operation Indicator (Bellows Type Only)
9
External Differential Adjustment Screw
Range Scale and Indicator English and Metric Units Operating Data Captive Cover Screws
10 11
Captive Cover Chain Customer Marking Area Conduit Entrance Connection Convolution Bellows Pressure Connection
12 13
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Publication A117-CA001A-EN-P
13-23
Bulletin 836T
Pressure Controls
Product Overview
Description Applications
Machine tools Machine hydraulic pressures Material clamping fixtures Lubricant and coolant pressures Compactor ram pressures Air compressors
0 1 2 3 4 5 6 7 8 9 10 11 12 13
Bulletin 836T Pressure Controls are control circuit devices designed to meet the traditional requirements of the transportation, machine tool, and other heavy-duty industries. Allen-Bradley Bulletin 836T Pressure Controls can be used in pneumatic and hydraulic applications. The copper alloy bellows actuators can be used with air, water, oil, vapor, and other non-corrosive gases and liquids. Type 316 stainless steel bellows are available for more corrosive gases, vapors, and fluids. A rugged stainless steel cylinder and stainless steel piston assembly is used for the higher-pressure coolant and hydraulic oil applications. May also be used with water and water-based fluids. The controls feature snap-action precision switches equipped with silver contacts. A relatively friction-free mechanism provides consistent operation regardless of mounting position. Devices are designed to allow easy adjustment of pressure settings. Allen-Bradley Bulletin 836T Pressure Controls are used in many types of applications with adjustable ranges from 30 in. Hg vacuum5000 psi. They can be used to control pneumatic systems and maintain a pressure tank within a preset and constant pressure range. They can be used to detect over-pressures of gases and liquids to prevent damage to valuable equipment. Pressure controls can also detect low pressure to protect equipment from loss of coolants and lubrication. Bulletin 836T Pressure Controls are offered in a variety of styles to fit a wide range of applications. The devices are available with either a Type 1, 4 & 13, or 7 & 9 and 4 & 13 combined enclosure. They are available with two-circuit or four-circuit contact blocks. Accessories and modifications are available to tailor the devices to meet most application requirements.
Style T
Independently adjustable operating range and differential Single bellows or piston operation
Style D
Independently adjustable system difference range and differential Two-bellows operation, one bellows connected to each system
Piston
3/8 in. N.P.T. female pipe connection SAE 7/16-20 UNF-2B thread O-ring boss seal SAE 9/16-18 UNF-2B thread O-ring boss seal Adjustable operating range 405000 psi Occasional surge pressure up to 15,000 psi
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13-24
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Technical Data
Technical Terms
Adjustable operating range Total span within which the contacts can be adjusted to trip and reset. Trip setting Higher pressure setting at which value the contacts transfer from their normal state to a change state. Reset setting Lower pressure setting at which value the contacts return to their normal state. Adjustable differential Difference between the trip and reset values Minimum differential When the differential is set to the lowest possible difference between trip and reset. Maximum differential When the differential is set to the highest possible difference between trip and reset. Max. occasional surge pressure Maximum surge pressure that can be applied to the actuator. Surges or ransients can occur during start-up and shut-down of a machine or system. Expressed in milliseconds, complex electronic instrumentation is required to measure the varying amplitude, frequency, and duration of this wave form. Extreme surges that occur approximately 8 times in a 24-hour period are negligible. Maximum line pressure Maximum sustained pressure that can be applied to the actuator without permanent damage. The control should not be cycled at this pressure. Note: Does not apply to piston type controls. psi Pounds per square inch gauge (positive pressure). Devices listed are in gauge pressure units which use atmospheric pressure as a reference. Atmospheric pressure at sea level is approximately 14.7 psi or 30 in. Hg. Vacuum Inches of mercury (in. Hg) vacuum (negative pressure). Operating range adjustment screw This screw is used to adjust the trip setting by varying the force of the main spring. Differential adjustment screw This screw is used to adjust reset setting by varying the force of the differential blade spring. Pressure media There are many types of pressure media that can be controlled. Examples include air, water, hydraulic fluids, and other types of gases and liquids. The type of media and the maximum system pressure will determine the type of actuator used for the pressure control application. See page 13-32. Pressure connection Common standard types of pressure connections used in control systems are 1/4 in. and 3/8 in. N.P.T. female pipe threads. SAE 7/16 and SAE 9/16 O-ring boss seals are also available (piston versions only). Contact configuration Bulletin 836T controls are available with either a 2-circuit or 4-circuit contact block. See Contacts.
Style D
Style D pressure difference controls adjustable system difference range The adjustable operating range for a pressure difference control. System difference pressure bushing This bushing is used to adjust the trip setting by varying the force on the main spring. Trip setting Desired difference in pressure between the two bellows at which value the contacts transfer from their normal state to a changed state. This occurs in one of the following conditions: The pressure in the bottom bellows is higher than the pressure in the top bellows by a value equal to the trip setting. The pressure in the bottom bellows remains constant and the pressure in the top bellows decreases by a value equal to the trip setting. Reset setting Predetermined normal difference in pressure between the two bellows, at which value the contacts return to their normal state. This occurs in one of the following conditions: The pressure in the bottom bellows is lower than the top bellows. The pressure in the bottom bellows remains constant and the pressure in the top bellows increases.
0 1 2 3 4 5 6 7 8
100% Operating Range Increasing Pressure psi Trip Setting Maximum Occasional Surge Pressure Maximum Line Pressure Adjustable Operating Angle Reset Setting (Minimum Reset Adjustment) Adjustable Span (Maximum Reset Adjustment) 0 psi Reference VAC
30 in. Hg Vacuum Reference
9 10 11 12 13
75%
50%
25%
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Publication A117-CA001A-EN-P
13-25
Bulletin 836T
Pressure Controls
Technical Data
Theory of Operation
0 1 2 3
Bulletin 836T Pressure Controls are designed to open or close electrical circuits in response to changes in pneumatic (air or gas) or hydraulic (oil or non-corrosive liquids) pressure. Piston controls are not intended for use with air or water. Figure 2 shows the basic operating mechanism. Pressure is applied to the actuator which can be either a bellows or piston type. As pressure rises, the actuator exerts force on the main spring. When the threshold force of the main spring is overcome, levers transfer the motion to the contact block, displacing the contacts this is referred to as the trip setting. The unique lever design amplifies the actuator motion, providing shorter stroke, which results in maximizing bellows life. The lever assembly also includes a virtually friction-free over-center toggle arrangement, providing positive snap action to the contact block for long contact life. As pressure falls, force on the differential spring increases and contacts return to their normal state this is referred to as reset setting. Varying the force of the main spring (by turning the operating range adjustment screw) determines when the contacts will trip. Varying the force of the differential spring (by turning the differential adjustment screw) determines when the contacts will reset. Setting trip and reset values determines the operating parameters of the application.
4
Pilot Light Holding Socket
5
Contact Block (Optional Contact Block Shield Not Shown)
6 7 8
Differential Adjustment Screw (Note: cover no longer has to be removed to make adjustments.) Main Spring
Pressure Connection
9
Applications for Control
10 11
Pressure controls can be used to either control or monitor a machine or process. Figure 3 shows a typical control application. Here, pressure is controlled within predetermined high and low values. Figure 4 shows a typical monitoring application. Here, pressure is monitored between a high and low value, signaling when a preset limit has been exceeded.
Trip
Trip
Differential
Differential
12 13
psi
psi
Reset
Reset
Output Contacts Normal State Changed State Normal State Time Changed State
Normal State
Changed State
Changed State
Output Contacts
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13-26
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Technical Datat
Control Setting Style T Pressure Controls
Allen-Bradley controls are designed for ease of setting to help minimize installation time. Standard pressure controls shipped from the factory are set at the maximum operating range and minimum differential. By using a pressure gauge and following these simple directions, the control can be set to the specific requirements for each application. See Figure 5. Step 1 Adjust trip setting The trip setting is controlled by the operating range adjustment screw and is adjusted externally. After loosening the lock nut, the trip setting is set by turning the operating range adjustment screw counterclockwise to lower the trip setting or clockwise to raise the trip setting. The approximate trip setting is shown on the indicating scale. When the proper setting is reached, simply tighten the lock nut. Note: Turning the operating range adjustment screw will cause both the trip and reset settings to change in virtually equal increments. Step 2 Adjust reset setting The reset setting is controlled by an external differential adjustment screw. The reset setting is set by turning the differential adjustment screw clockwise to increase the differential or counterclockwise to decrease the differential. Note: Adjusting the differential has little or no affect on the trip setting.
0 1 2 3 4
Locking Nut
5
Optional Finger-Safe Contact Block Meets IEC 529/Ip2X & CSA
6 7
8 9 10 11
12 13
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13-27
Bulletin 836T
Pressure Controls
Technical Data
Control Setting Style D Pressure Difference Controls
0 1 2 3 4 5 6 7
Standard pressure difference controls shipped from the factory are set at the maximum adjustable difference range and minimum differential. Remove the front cover and use a pressure gauge to make the following adjustments. See Figure 6.
Figure 6 Trip and reset adjustment for pressure difference controls 4-circuit contact block
Main Spring
8 9 10
Conduit Connection Isolation Terminal Ground Terminal Gasketed Captive Cover
11
Higher Pressure Bellows Connection
12 13
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13-28
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Technical Data
Repeat Accuracy and Mechanical Life
The design and construction of Bulletin 836T Pressure Controls provide a typical repeat accuracy equal to or better than the values shown in the repeat accuracy table below. Repeat accuracy is based on percent of maximum range, evaluated from test data and calculated using the formula per ICS 2-225 standards. Repeat accuracy and mechanical life of bellows type controls is graphically illustrated in Figure 7. The life curve does not apply to piston type controls. For general applications, controls selected where the contacts operate between 30% and 80% of the operating range and where the maximum line and surge pressures do not exceed the specified values will provide excellent life and repeat accuracy. For more specific applications, it is important to note that the controls are designed to operate below or above these values. However, there may be a small trade-off between the factors of repeat accuracy and mechanical life.
0 1 2
Usable area of range that provides best repeat accuracy and possible slightly decreased operating life. 80% Recomended Selection Range for General Applications 30% Usable area of range that provides longest life and possibly slightly reduced repeat accuracy. 0 psi Reference Increasing Pressure psi Adjustable Operating Range
75%
3 4 5 6 7 8 9 10 11 12 13
50%
25%
V AC
Repeat Accuracy
Type Bellows Piston with seal Piston without seal Typical Characteristics (% of Maximum Range) 1 1% 5% 3%
1 Evaluation made from test data and calculated using formula per ICS 2-225 standards.
Seal adds additional friction and value shown takes into consideration initial breakaway frictional force incurred during start-up or infrequent cycle operation. On continual cycle operation the repeat accuracy approaches 3%.
Temperature Range
The temperature range at +32 F (0 C) or below is based on the absence of freezing moisture, water, or other fluids that may solidify and impede the operation of the control. Temperature ratings: Operating: Storage: 22 +150 F (30+66 C) 22+200 F (30+93 C)
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Publication A117-CA001A-EN-P
13-29
Bulletin 836T
Pressure Controls
Technical Data
Contacts
0 1 2 3 4 5
Bulletin 836T controls feature 2- and 4-circuit contact blocks for added control circuit flexibility. Two-circuit contact blocks have one normally open contact and one normally closed contact and may be arranged for single-pole double-throw operation or separate circuit operation having the same polarity. Four-circuit contact blocks may be arranged for double-pole double-throw operation or separate circuit operation having the same polarity.
Make
Utilization Category AC-11 DC-11 Maximum Continuous th Current I 10 10 10 Volts Ue 120600 AC 72120 AC 2472 AC 115600 DC 7200 VA 60 A 60 A 50 VA
Break
720 VA 720 VA 10 A 50 VA
6 7 8 9 10 11 12 13
Make
Utilization Category AC-11 DC-11 Maximum Continuous th Current I 5 5 Volts Ue 72120 AC 2472 AC 115240 DC 30 A 30 A 40 VA
Break
360 VA 3A 40 VA
Note: NEMA does not rate contacts to switch low voltage and current. Bulletin 836T Styles T and D Pressure Controls are supplied with silver contacts. The devices are designed to deliver high force snap action to the contacts. This provides exceptional contact fidelity at 24V DC I/O card current level entry when the integrity of the enclosure is maintained.
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13-30
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Technical Data
Contact Wiring Configurations 2-Circuit Contact Blocks
Positive Pressure Trip on increasing pressure, contacts 1-2 open and 3-4 close Vacuum Pressure
0 1 2 3
Isolated Terminal
Isolated Terminal
4 5
B
Trip on increasing pressure, contacts 1-2 and 5-6 open and 3-4 and 7-8 close
B A
Trip on increasing pressure, contacts 3-4 and 7-8 open and 1-2 and 5-6 close
6 7 8 9
Note: Cicuits A and B are electrically isolated from one another. A or C circuits must be the same polarity.
10 11 12
13
13-31
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Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Technical Data
Pressure Control Selection
0 1 2 3 4 5 6
The selection table below is an overview of the five types of Bulletin 836T Pressure Controls Rockwell Automation offers. Each type of control is suitable for use on many types of applications. Pressure ranges, pressure connections, enclosure types, and the compatibility of the actulator with different types of pressure media are given to assist in the selection of which type of control to use.
836T Actuator Type Adjustable operating ranges Adjustable differentials Maximum line pressures Occasional surge pressures Air Water Hydraulic fluids Corrosive liquids 1 Non-corrosive liquids Corrosive gases 1 Non-corrosive gases Enclosures Type 1, 4 & 13 Type 7 & 9 and 4 & 13, IP66 Pipe Connections Standard pressure connection 1/4 in. N.P.T. female pipe thread 3/8 in. N.P.T. female pipe thread SAE 7/16-20 UNF-2B thread Oring boss seal SAE 9/16-18 UNF-2B thread Oring boss seal 3/8 in. N.P.T. female pipe thread SAE 7/16-20 UNF-2B thread Oring boss seal SAE 9/16-18 UNF-2B thread Oring boss seal Copper Alloy Bellows 30 in. Hg vacuum650 psi 2125 psi up to 1300 psi up to 1600 psi Type 316 Stainless Steel Bellows 30 in. Hg vacuum375 psi 290 psi up to 600 psi up to 600 psi Pressure Media Piston Type Without Seal 405000 psi 20650 psi up to 15 000 psi Piston Type With Seal 805000 psi 40650 psi up to 15 000 psi
7 8 9 10 11 12 13
1 Corrosive liquids and gases must be compatible with Type 316 Stainless Steel Bellows.
Note: Pressure difference controls are supplied with either copper alloy or stainless steel bellows. See Product Selection on page 13-38 and page 13-39 for details.
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13-32
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Ordering Information/Catalog Number Explanation
Ordering Bulletin 836T Pressure Controls
When ordering Bulletin 836T Pressure Controls, consider the following: Device style Adjustable operating range Adjustable differential Maximum line pressure Occasional surge pressure Pressure media Enclosure type Pressure connection
0 1 2 3 4
How to Order
Step 1: Basic Device Select a catalog number for the basic device........................See pages 13-3413-39. Step 2: Modifications If required, add the appropriate modification suffix code(s) to the catalog number of the basic device.......See page 13-40. Step 3: Accessories If required, order accessories..................................................See page 13-41. Step 4: Factory Options Factory-set pressure controls..................................................See page 13-43 .
836T T
a a
Style of Device Code T D Description Pressure control Pressure difference control
25
b
1
c c
J
d
X40
e
X15
f e
Contact Block Type Code Description 2-circuit contact block - standard 4-circuit contact block
5 6 7 8 9 10 11 12 13
d
Enclosure Type Code J E Description 1, 4 & 13 Industrial use 7 & 9 and 4 & 13 Combined hazardous locations
b
Operator Type Code Style 25 26 30 35 40 45 46 T T T T T D D Description Copper alloy bellows Type 316 stainless steel bellows Piston without seal Piston with seal Piston with seal (independent trip and reset adjustment) Copper alloy bellows Type 316 stainless steel bellows
f
Modification 1 Add suffix codes in descending order whenever possible. (Optional. See page 13-40.)
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Publication A117-CA001A-EN-P
13-33
Bulletin 836T
Pressure Controls
Product Selection Style T
0 1 2 3
Style T Type 1, 4 & 13 with Pilot Light Option Style T Type 1, 4 & 13 with Pilot Light, Range Locking Cap, and 5-Pin Mini-Receptacle
4 5 6 7 8 9 10 11 12 13
Style T Pressure Controls with Copper Alloy Bellows1 S.P.D.T. 2-Circuit Contact Block
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 30 in. Hg vacuum35 675 12150 20300 40450 60650 Adjustable Differential [psi] (Approximate Mid-Range Values) 27 315 630 1055 2090 30125 Maximum psi Line Pressure 80 200 350 600 900 1300 Occasional Surge Pressure 90 220 450 750 1200 1600 Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13
Cat. No.
836T-T251J 836T-T252J 836T-T253J 836T-T254J 836T-T255J 836T-T256J
Style T Pressure Controls with Copper Alloy Bellows1 D.P.D.T. 4-Circuit Contact Block
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 30 in. Hg vacuum35 675 12150 20300 40450 60650 Adjustable Differential [psi] (Approximate Mid-Range Values) 2.27 4.515 930 1555 3090 45125 Maximum psi Occasional Surge Pressure 90 220 450 750 1200 1600 Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13
1 Copper alloy bellows may be used on water or air, and other liquids or gases not corrosive to this alloy.
Transients (pulses) can occur in a system prior to reaching a steady-state condition. Surge pressures within published values generated during startup or shutdown of a machine or system, not exceeding eight times in a 24-hour period, are negligible. The combined Type 7 & 9 and 4 & 13 hazardous gas and dust service enclosure is supplied with special gasket and O-ring seal to diminish/exclude moisture, fluids, and dust from entering the enclosure. Enclosure is rated for the following environments: CLASS I Groups C,D CLASS II Groups E,F,G CLASS III
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13-34
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Product Selection Style T
0 1 2
Style T Type 1, 4 & 13 with Pilot Light Option Style T Type 7 & 9 and 4 & 13
3
Enclosure Type
Style T Pressure Controls with Type 316 Stainless Steel Bellows1 S.P.D.T. 2-Circuit Contact Block
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 30 in. Hg vacuum35 8100 24250 40375 Adjustable Differential [psi] (Approximate Mid-Range Values) 27 420 1250 2090 Maximum psi Occasional Surge Pressure 65 200 500 600 Type 1, 4 & 13 Type 7 & 9 and 4 & 13
4 5 6
Cat. No.
836T-T260J 836T-T261J 836T-T262J 836T-T263J
Style T Pressure Controls with Type 316 Stainless Steel Bellows1 D.P.D.T. 4-Circuit Contact Block
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 30 in. Hg vacuum35 8100 24250 40375 Adjustable Differential [psi] (Approximate Mid-Range Values) 2.27 620 1850 3090 Maximum psi Occasional Surge Pressure 65 200 500 600 Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13
7 8 9 10 11 12 13
1 Type 316 stainless steel bellows are available for more corrosive liquids or gases.
Transients (pulses) can occur in a system prior to reaching a steady-state condition. Surge pressures within published values generated during startup or shutdown of a machine or system, not exceeding eight times in a 24-hour period, are negligible. The combined Type 7 & 9 and 4 & 13 hazardous gas and dust service enclosure is supplied with special gasket and O-ring seal to diminish/exclude moisture, fluids, and dust from entering the enclosure. Enclosure is rated for the following environments: CLASS I Groups C,D CLASS II Groups E,F,G CLASS III
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Publication A117-CA001A-EN-P
13-35
Bulletin 836T
Pressure Controls
Product Selection Style T
0 1 2 3 4 5 6 7 8 9 10 11 12 13
www.ab.com/catalogs Preferred availability cat. nos. are bold.
Style T Type 1, 4 & 13 Style T Type 1, 4 & 13 with Pilot Light, Mini-Receptacle, SAE Thread
Style T Pressure Controls Piston without Seal1 S.P.D.T. 2-Circuit Contact Block (Hydraulic fluid return line to reservoir is recommended)
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 40550 701000 2003000 3505000 Adjustable Differential [psi] (Approximate Mid-Range Values) 2075 50175 125400 175650 Maximum psi Occasional Surge Pressure 5000 10000 15000 15000 Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13
Line Pressure
Cat. No.
836T-T300J 836T-T301J 836T-T302J 836T-T303J
Style T Pressure Controls Piston without Seal1 D.P.D.T. 4-Circuit Contact Block (Hydraulic fluid return line to reservoir is recommended)
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 40550 701000 2003000 3505000 Adjustable Differential [psi] (Approximate Mid-Range Values) 3075 60175 150400 260650 Maximum psi Occasional Surge Pressure 5000 10000 15000 15000 Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13
Line Pressure
1 When phosphate ester base hydraulic fluid is present, a special diaphragm assembly is required. See Modifications, [T-9864960].
Transients (pulses) can occur in a system prior to reaching a steady-state condition. Surge pressures within published values generated during startup or shutdown of a machine or system, not exceeding eight times in a 24-hour period, are negligible. The combined Type 7 & 9 and 4 & 13 hazardous gas and dust service enclosure is supplied with special gasket and O-ring seal to diminish/exclude moisture, fluids, and dust from entering the enclosure. Enclosure is rated for the following environments: CLASS I Groups C,D CLASS II Groups E,F,G CLASS III
13-36
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Product Selection Style T
0 1
Style T Type 1, 4 & 13 Style T Type 1, 4 & 13 with Pilot Light, Mini-Receptacle, SAE Thread
2 3 4 5
Style T Pressure Controls Piston with Seal1 S.P.D.T. 2-Circuit Contact Block (Hydraulic fluid return line to reservoir is not required)
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 80550 1401000 4003000 7005000 Adjustable Differential [psi] (Approximate Mid-Range Values) 4075 70175 200400 350650 Maximum psi Occasional Surge Pressure 5000 10 000 15 000 15 000 Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13
6 7 8 9 10 11
Line Pressure
Cat. No.
836T-T350J 836T-T351J 836T-T352J 836T-T353J
Style T Pressure Controls Piston with Seal1 D.P.D.T. 4-Circuit Contact Block (Hydraulic fluid return line to reservoir is not required)
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable Operating Range [psi] 80550 1401000 4003000 7005000 Adjustable Differential [psi] (Approximate Mid-Range Values) 6075 100175 300400 525650 Maximum psi Occasional Surge Pressure 5000 10 000 10 000 15 000 Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13
Line Pressure
Independent Trip and Reset Adjustment for Wide Differential Applications1 Piston with Seal, S.P.D.T. 2-Circuit Contact Block (Hydraulic fluid return line to reservoir is not required)
Standard Pressure Controls shipped from the factory are set at the maximum operating range and minimum differential.
Pressure Specifications Adjustable High Trip Setting [psi] 5003000 Adjustable Low Reset Setting [psi] 0250 Occasional Surge Pressure [psi] 15000 Cat. No. 836T-T400J Enclosure Type Type 1, 4 & 13 Type 7 & 9 and 4 & 13 Cat. No. 836T-T400E
1 When phosphate ester base hydraulic fluid is present, a special diaphragm and seal assembly is required. See Modifications, page 13-40.
12 13
Transients (pulses) can occur in a system prior to reaching a steady-state condition. Surge pressures within published values generated during startup or shutdown of a machine or system, not exceeding eight times in a 24-hour period, are negligible. The combined Type 7 & 9 and 4 & 13 hazardous gas and dust service enclosure is supplied with special gasket and O-ring seal to diminish/exclude moisture, fluids, and dust from entering the enclosure. Enclosure is rated for the following environments: CLASS I Groups C,D CLASS II Groups E,F,G CLASS III
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Publication A117-CA001A-EN-P
13-37
Bulletin 836T
Pressure Controls
Product Selection Style D
0 1 2
Style D Type 1, 4 & 13 with Pilot Light Option Style D Type 1, 4 & 13
3 4 5 6 7 8 9 10 11 12 13
Style D Pressure Difference Controls with Copper Alloy Bellows1 S.P.D.T. 2-Circuit Contact Block
Standard Pressure Difference Controls shipped from the factory are set at the maximum adjustable difference range and minimum differential.
Pressure Specifications Line Pressure psi Adjustable System Adjustable Differential [psi] Difference Range (Approximate Mid-Range [psi] Values) 19 2.520 540 1070 17 2.515 530 1050 Max. Occasional Surge Pressure [psi] 90 200 375 650 Enclosure Type 1, 4 & 13
Cat. No.
836T-D450J 836T-D451J 836T-D452J 836T-D453J
Style D Pressure Difference Controls with Copper Alloy Bellows1 D.P.D.T. 4-Circuit Contact Block
Standard Pressure Difference Controls shipped from the factory are set at the maximum adjustable difference range and minimum differential.
Pressure Specifications Line Pressure psi Adjustable System Adjustable Differential [psi] Difference Range (Approximate Mid-Range [psi] Values) 19 2.520 540 1070 1.57 3.7515 7.530 1550 Max. Occasional Surge Pressure [psi] 90 200 375 650 Enclosure Type 1, 4 & 13
1 Copper alloy bellows may be used on water or air, and other liquids or gases not corrosive to this alloy.
Transients (pulses) can occur in a system prior to reaching a steady-state condition. Surge pressures within published values generated during startup or shutdown of a machine or system, not exceeding eight times in a 24-hour period, are negligible. Finger-safe shield supplied standard.
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13-38
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Product Selection Style D
0 1 2
Style D Type 1, 4 & 13 with Pilot Light Option Style D Type 1, 4 & 13
Style D Pressure Difference Controls with Type 316 Stainless Steel Bellows1 S.P.D.T. 2-Circuit Contact Block
Standard Pressure Difference Controls shipped from the factory are set at the maximum adjustable difference range and minimum differential.
Pressure Specifications Line Pressure [psi] Adjustable System Adjustable Differential [psi] Difference Range (Approximate Mid-Range [psi] Values) 19 525 1270 17 415 1250 Minimum Maximum 30 in. Hg Vac. 0 0 65 175 500 Max. Occasional Surge Pressure [psi] 65 200 500 Enclosure Type 1, 4 & 13
3 4
5 6 7 8 9 10 11 12 13
Style D Pressure Difference Controls with Type 316 Stainless Steel Bellows1 D.P.D.T. 4-Circuit Contact Block
Standard Pressure Difference Controls shipped from the factory are set at the maximum adjustable difference range and minimum differential.
Pressure Specifications Line Pressure [psi] Adjustable System Adjustable Differential [psi] Difference Range (Approximate Mid-Range [psi] Values) 19 525 1270 1.57 615 1850 Max. Occasional Surge Pressure [psi] 65 200 500 Enclosure Type 1, 4 & 13
1 Type 316 stainless steel bellows are available for more corrosive liquids or gases.
Transients (pulses) can occur in a system prior to reaching a steady-state condition. Surge pressures within published values generated during startup or shutdown of a machine or system, not exceeding eight times in a 24-hour period, are negligible. Finger-safe shield supplied as standard.
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Publication A117-CA001A-EN-P
13-39
Bulletin 836T
Pressure Controls
Modifications
Ordering Modifications
0 1 2 3 4 5
Modifications are ordered by adding the appropriate modification suffix code to the catalog number of the basic device. Add suffix codes to the catalog number in descending order.
Item Oxygen/nitrous oxide service External adjustment sealed Tamper resistant setting SAE 7/16-20 UNF thread O-ring boss seal (piston type pressure control) SAE 9/16-18 UNF thread O-ring boss seal (piston type pressure control) Neon pilot light 120V AC Red LED pilot light 24V DC Green LED pilot light 24V DC Special diaphragm assembly (piston type pressure control) Special diaphragm and O-ring assembly (piston type pressure control) Description Bellows and fittings specially prepared for oxygen and nitrous oxide service. Devices tested with pure oxygen, bellows plugged for protection from contamination and a tag warning against contamination is applied. The 836T external adjustment is sealed, requiring cover removal to adjust differential (includes contact block shield) Range and differential adjustments are factory sealed. Price includes factory setting charge.1 Suffix Code X2 X3 X4 X6 Female SAE straight thread O-ring seal designed to prevent leaks and minimize loss of hydraulic fluids. X7 A high-intensity neon pilot light for 120V AC, 60 Hz applications is available and can be wired for ON or OFF operation. The current rating is 1.0 mA. A high-intensity LED 24V DC pilot light is available to meet the requirements of the automotive, machine tool builders, and other industries. The current rating is 22 mA and can be wired for ON or OFF operation. and fabric. Required when phosphate ester base and Diaphragm is made of other adverse hydraulic fluids are present. Use on Catalog Numbers 836T-T300J through 836TT303J series controls. Diaphragm is made of Viton and Nomex fabric, O-ring is made of Viton . Required when phosphate esterbase and other adverse hydraulic fluids are present. Use on Catalog Numbers 836T-T350J, -T351J, -T352J, -T353J and -T400J series controls. Special enclosure gaskets made of Viton are available for applications where the standard gasket materials are not fluid compatible. Viton is generally specified by the user for use with existing and newly developed coolants and hydraulic fluids to maintain enclosure integrity. These include cover, backplate, cover, and bellows or piston gaskets. Note: Viton enclosure gaskets are often used with special diaphragm assemblies (X25 or X26). See description above. Viton Nomex X9 X15 X18 X25
X26
X29
6 7 8 9 10 11 12 13
5-Pin mini-type receptacle without Select the desired pin wiring configuration from the Wiring Diagrams. Rated at 8 A, 600V. pilot light 5-Pin mini-type receptacle with prewired pilot light 5-Pin micro-connect receptacle without pilot light Select the desired pin wiring, pilot light wiring, and voltage from the Wiring Diagrams. Includes receptacle and pilot light. Rated at 8 A, 600V. Select the desired pin wiring configuration from the Wiring Diagrams. Add number "1" to the suffix number immediately following the letter "X." Example: "X19" becomes "X119." Rated at 3 A, 300V. Pin/Wiring Code: 1 Red with white tracer, 2 Red, 3 Green (Gnd), 4 Red with yellow tracer, 5 Red with Black Tracer Select the desired pin wiring configuration and pilot light (X9 or X15, see above for specifications) from the Wiring Diagrams. Add number "1" to the Suffix Number immediately following the letter "X." Example: "X12X9" becomes "X121X9." Rated at 3 A, 300V. Pin/Wiring Code: 1 Red with white tracer, 2 Red, 3 Green (Gnd), 4 Red with yellow tracer, 5 Red with black tracer
5-Pin micro-connect receptacle with prewired pilot light Additional optional receptacles and wiring
1 See page 13-43.
For assistance, please consult your local Rockwell Automation sales office or Allen-Bradley distributor.
Not available on the Type 7 & 9 and 4 & 13 combined enclosed devices.
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13-40
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Accessories
Ordering Accessories
Accessories are ordered as separate catalog numbers. Select the required accessories from the accessories table below.
Item Description Controls are supplied as standard with an internal pulsation snubber. However, a control properly selected and used within the adjustable range values, yet having a short bellows life, is a good indication of the presence of extreme surge pressures. External fixed pulsation snubbers are available to provide additional dampening when extreme pulsations or surges are present. Recommended if more than eight line surges occur in a 24-hour time period. Type Snubber for bellows control 1/4-18 N.P.T. thread Snubber for piston control 3/8-18 N.P.T. thread Snubber for bellows control 1/4-18 N.P.T. thread Cat. No.
836-N7
0 1 2
836T-N8
Controls are supplied as standard with an internal pulsation snubber. However, a control properly selected and used within the adjustable range values, yet having a short bellows life, is a good indication of the presence of extreme surge pressures. Selectable element pulsation snubbers are supplied with five different elements to provide a selectable balance between maximizing pressure control life and minimizing control response time. Pulsation snubbers are supplied with the midrange element already mounted and four other color-coded porosity elements Selectable element pulsation included in the package. See "Selectable Pulsation Snubber Porosity Elements" snubbers table on this page for porosity specifications.
836-N40
836T-N41
3
SAE 7/16-20 UNF-2B thread O-ring boss seal for piston controls SAE 9/16-18 UNF-2B thread O-ring boss seal for piston controls 836T-N49
Female SAE straight thread O-ring seal designed to prevent leaks and minimize loss of hydraulic fluids. Use on applications with a pressure range of 5505000 psi.
4 5
Package consists of five porosity elements and complete instructions. Elements are color-coded for easy Selectable pulsation snubber identification. Elements are available in five different porosities for a wide range of applications. See selectable porosity elements pulsation snubber porosity elements table. Locking cap Deters unauthorized tampering of range setting. Once installed, the locking cap can be removed with a screwdriver to re-adjust the control.
836T-N13
Isolation trap with two 1/4 in. An isolation trap is available for high-temperature media applications from 150600 F or corrosive applications male pipe fittings compatible with Type 316 stainless steel tubing and fittings. The isolation coil is inserted between the bellows of Isolation trap with one 1/4 in. the pressure control and the elevated temperature line of the system. The isolation trap will fill with condensed male and one 1/4 in. female water or can be filled with water or suitable fluid when installed. A silicone buffer fluid is available in a convenient pipe fittings dispenser. Copper alloy lower and higher pressure range bellows can be applied to many applications using the isolation trap. The silicone buffer fluid is used to isolate many corrosive substances from coming in contact with the bellows. The isolation trap is rated at 3000 psi working pressure. Not available for piston-type controls.See 2 oz. of buffer fluid to fill photo on [S-9864788] bellows and tubing Metric electrical entry conduit adapters BS 20 mm thread adapter Pg 13.5 thread adapter
836-N25
6
836-N26
836-N27
7 8 9 10
836T-N36
836T-N37
Porosity Coarser
Finer Assorted
836-N47 836-N48
11 12
Pulsation Snubbers
Isolation Trap and Silicone Buffer Fluid
13
13-41
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Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Conversion Kits & Renewal Parts
Conversion Kits
0 1 2 3 4 5 6 7 8 9 10 11 12 13
Conversion Kits
Item Neon pilot light conversion kit Red LED pilot light conversion kit Green LED pilot light conversion kit Description Converts standard control to control with 120V AC neon pilot light. Not available on Type 7 & 9 devices. Kit includes pilot light and cover assembly. Converts standard control to control with 24V DC LED pilot light; has a 22 mA current rating. Not available on Type 7 & 9 devices. Kit includes pilot light and cover assembly. Converts standard control to control with 24V DC LED pilot light; has a 22 mA current rating. Not available on Type 7 & 9 devices. Kit includes pilot light and cover assembly. Suffix Code N9 N15 N18
Example: To convert a Cat. No. 836T-T301J to a Cat. No. 836T-T301JX15, order Cat. No. 836T-T301JN15.
Renewal Parts
Item 2-Circuit contact block renewal kit 4-Circuit contact block renewal kit Description Allows renewal of worn contacts for Bulletin 836T controls. Cat. No.
836T-N1
Allows renewal of worn contacts for Bulletin 836T controls. For use on Cat. No. 836T-T350J.
Renewal seals for piston-type controls For use on Cat. No. 836T-T352J and 836T-T400J. For use on Cat. No. 836T-T353J.
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13-42
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Factory Options
Factory-Set Pressure Controls Ordering Factory-Set Pressure Controls
When a specific factory setting is requested, the specific terminal connections must be specified e.g., N.O. or N.C. It must also be specified whether the contact operation is occurring on either increasing or decreasing pressure. For example: Normally Closed (N.C.) contacts to open at1 psi increasing pressure and close at1 psi decreasing pressure. OR Normally Open (N.O.) contacts to close at1 psi increasing pressure and open at1 psi decreasing pressure. If minimum differential is not critical and the inherent minimum differential satisfies the application, specify the factory setting as follows: Normally Closed (N.C.) contacts to open at1 psi increasing pressure minimum differential. OR Normally Open (N.O.) contacts to close at1 psi increasing pressure minimum differential. Quality analog test gauges are used when applying requested factory settings to these rugged industrial grade pressure controls. (Gauges are calibrated and accuracy is traceable to the The National Institute of Standards and Technology.) The actual requested setting is applied to the control by reading the set point directly from the test gauge being used. However, traceable gauge tolerance variance between source and user, and possible severe shock during shipping and installation, may contribute to the factory settings deviating slightly from the specified values. Slight recalibration can easily be accomplished upon final installation to meet specific requirements for the more demanding applications. When installed, the controls will perform with a repeat accuracy as established in the paragraph entitled Repeat Accuracy" (see page 13-53). Special service is available to factory-set controls on digital laboratory instruments, up to 600 psi, when required for more critical applications. An additional charge may be added for this service contingent upon setting tolerance and quantity. Please contact your local Rockwell Automation sales office or Allen-Bradley distributor.
1 Specify psi (pounds per square inch) or, in. Hg vac (inches of mercury
0 1 2 3 4 5
vacuum). Per ANSI B40.1 Grade 2A (0.5% accuracy full scale), Grade 3A (0.25% accuracy full scale).
6 7 8
Standards Compliance
UL508 UL698, 1604 (Haz. Loc.) CSA 22,2 No. 14 NEMA ICS-2
Certifications
9 10 11 12 13
www.ab.com/catalogs Preferred availability cat. nos. are bold. Publication A117-CA001A-EN-P
Hazardous Location enclosure devices are not CE compliant. All other enclosed devices are CE compliant.
13-43
Bulletin 836T
Pressure Controls
Wiring Diagrams J1 Wiring
Bulletin 836T 5-Pin Mini-Type Receptacle Option Wiring Reference
0 1 2
(J1 Wiring)
(See applicable codes and laws)
Suffix X19
SAME POLARITY PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 1-2 (PINS 1&5) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 3-4 (PINS 4 & 2) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
RECEPTACLE PINS
3 4 5 6 7 8 9 10
Suffix X21X15
WITH LED PILOT LIGHT 24V DC ONLY PILOT LIGHT WIRED ACROSS CIRCUIT 1-2 (PINS 1 & 5) SAME POLARITY
RECEPTACLE PINS PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 1-2 (PINS 1&5) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 3-4 (PINS 4 & 2) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
RECEPTACLE PINS PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 1-2 (PINS 1 & 5) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 3-4 (PINS 4 & 2) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
Suffix X22X9
WITH NEON GLOW PILOT LIGHT 120V AC ONLY PILOT LIGHT WIRED ACROSS CIRCUIT 3-4 (PINS 4 & 2) SAME POLARITY
Suffix X22X15
WITH LED PILOT LIGHT 24V DC ONLY PILOT LIGHT WIRED ACROSS CIRCUIT 34 (PINS 4 & 2) SAME POLARITY
RECEPTACLE PINS
11 12 13
PRESSURE: CIRCUIT 1-2 (PINS 1 & 5) PRESSURE: CIRCUIT 1-2 (PINS 1 & 5) OPENS ON RISING PRESSURE OPENS ON RISING PRESSURE VACUUM: CIRCUIT 3-4 (PINS 4 & 2) VACUUM: CIRCUIT 3-4 (PINS 4 & 2) OPENS ON INCREASING VACUUM OPENS ON INCREASING VACUUM (TOWARD 30 in. HG) (TOWARD 30 in. HG) 1 The pilot lights shown in these diagrams are wired across the terminals and in series with the load. Pilot light is OFF when the load is energized, ON when the load is de-energized. For simultaneous energization of the load and pilot light, or other optional wiring configurations, consult your local Rockwell Automation sales office or Allen-Bradley distributor. Note pilot light polarity. X22 not available with 4-circuit pressure controls.
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13-44
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Wiring Diagrams J9 Wiring
Bulletin 836T 5-Pin Mini-Type Receptacle Option Wiring Reference (J9 Wiring)
(See applicable codes and laws)
0
Suffix X20
SAME POLARITY PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 12 (PINS 4 & 2) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 34 (PINS 1 & 5) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
1 2 3
RECEPTACLE PINS
Suffix X23X15
WITH LED PILOT LIGHT 24V DC ONLY PILOT LIGHT WIRED ACROSS CIRCUIT 12 (PINS 4 & 2) SAME POLARITY
4 5 6 7 8
RECEPTACLE PINS PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 12 (PINS 4 & 2) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 34 (PINS 1 & 5) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
RECEPTACLE PINS
Suffix X24X9
WITH NEON GLOW LIGHT 120V AC ONLY PILOT LIGHT WIRED ACROSS CIRCUIT 34 (PINS 1 & 5)
Suffix X24X15
WITH LED PILOT LIGHT 24V DC ONLY PILOT LIGHT WIRED ACROSS CIRCUIT 34 (PINS 1 & 5) SAME POLARITY
9 10
RECEPTACLE PINS
PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 12 (PINS 4 & 2) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 34 (PINS 1 & 5) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 12 (PINS 4 & 2) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 34 (PINS 1 & 5) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
11 12 13
1 The pilot lights shown in these diagrams are wired across the terminals and in series with the load. Pilot light is OFF when the load is energized, ON when the
load is de-energized. For simultaneous energization of the load and pilot light, or other optional wiring configurations, consult your local Rockwell Automation sales office or Allen-Bradley distributor. Note pilot light polarity.
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Publication A117-CA001A-EN-P
13-45
Bulletin 836T
Pressure Controls
Wiring Diagrams
Bulletin 836T 5-Pin Mini-Type Receptacle Option Wiring Reference
0 1 2 3 4 5 6 7 8 9 10 11 12 13
Suffix X81X15
WITH LED PILOT LIGHT 24V DC ONLY RATED 600V 8 AMPS SAME POLARITY
RECEPTACLE PINS PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 12 (PINS 5 & 4) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 34 (PINS 5 & 1) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
RECEPTACLE PINS PIN/WIRE CODE 1= White 2= Red 3= Green 4= Orange 5= Black PRESSURE: CIRCUIT 12 (PINS 5 & 4) OPENS ON RISING PRESSURE VACUUM: CIRCUIT 34 (PINS 5 & 1) OPENS ON INCREASING VACUUM (TOWARD 30 in. HG)
Note: Bulletin 836T Suffix X81 Wiring load and pilot light simultaneously energize when contacts displace (contact terminals 3 and 4 close) at a predetermined pressure setting.
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13-46
Publication A117-CA001A-EN-P
Bulletin 836T
Pressure Controls
Approximate Dimensions
Approximate Dimensions and Shipping Weights
Dimensions in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.
0
3.02 (76.7) 2.91 (73.9) 1.28 (32.5)
1 2
A
*
1/2-14 N.P.T. 1.72 (43.7) 0.88 (22.3)
*
1/2-14 N.P.T (2) 1/4-18 N.P.T. 1.72 (43.7) 0.88 (22.3)
3
Approximate Shipping Weight 4 lbs. (1.8 kg)
1/4-18 N.P.T.
4
A Dimensions 8.60 (218) 8.5 (216) 10.06 (256)
Cat. No.
836T-T254J 836T-T255J 836T-T256J 836T-T262J 836T-T263J
Cat. No.
836T-D450J 836T-D451J 836T-D452J 836T-D453J
5 6
836T-D463J
7 8 9
2.69 (68.3)
*
1/2-14 N.P.T.
5.55 (141)
10 11 12 13
0.69 (17.5) 1/8"-27 N.P.T. 3/8"-18 N.P.T. Oil Drain Connection Plugged When Not in Use
1 (2) mounting screws are required: 3/16 x 20 x 2 in. Counterbore depth is 1-1/8 in. Overall depth of mtg hole (front to back) is 2-1/4 in.
Cat. No. 836T-T300J 836T-T301J 836T-T302J 836T-T303J 836T-T350J 836T-T351J 836T-T352J 836T-T353J 836T-T400J
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Publication A117-CA001A-EN-P
13-47