Applications:

The M3200-ce module is used with semiconductor-

Load Cell Amplifier M3200-ce
gauge tension roller assemblies to indicate the exact
web tension on process machines such as slitters, coat-
ers, rewinders, embossers, and printing and label
presses. CAL. M3200 LOAD CELL AMPLIFIER

1: Line L
ZERO 2:
Adjustment procedure: 3: Line N
4:
1. Check that tension sensing roller is mounted cor- 5: Ground PE
6: Ground
rectly. 7: NC.
8: NC.
2. A remote tension meter can be used to calibrate the ALARM
9: +2.5V Supply
module. If used, check that meter is adjusted to ALARM
10: + input +/- 250mV
11: - input +/- 250mV
zero mechanically. 12: -2.5V Supply
3. In the event that a remote meter is not used, a volt- POWER 13: Total output 0-10V / 0-100 A
14: Total output 4-20 mA / 0-20 mA/ 0-10V
meter is required. Connect voltmeter between ter- 15: Ground
minals 13 (+) and 15 (-). IL077.eps 16: Alarm output

4. With the web removed and no tension applied to the IL053.eps

tension sensing roller, adjust ZERO until either 0V
is measured on Total output (13) or the remote
meter reads zero. Electrical specifications:
5. Thread a rope across the center of the tension sens- Supply Voltage, Selectable ..................................... 115V/230V AC ± 10% (IEC 204-1)
ing roller following the path of the web through the Supply Frequency...............................................................................................48-62 Hz
machine. Thread the rope at least one roller before Overvoltage Category...................................................................................II (IEC 664)
and one roller after the tension sensing roller. Maximum Internal Fuse Size ........................ 5x20mm 115V/80mA(T)/230V/50mA(T)
Insure that rope does not pass over any deadbars or Material Degree of Inflammability..................................................................... UL94V0
non-freewheeling rolls. All rollers in contact with Maximum Power Consumption ........................................................................... 3.5 VA
the rope must be able to rotate freely. Fasten one Maximum Supply Fuse Size ....................................................................................10 A
end of the rope securely, attaching a weight of Testing Voltage - Primary to Secondary......................................... 3.75 kV for 1 Minute
known value to the other end. This weight should
EMC-Immunity ..............................................................................EN 50082-2, Industry
be at least 25% of the full scale value. Rotate roll-
EMC-Emission .................................................... EN 50081-1, Trade and Light Industry
ers in the direction of the weight.
Degree of Protection................................................................................ IP20 (IEC 529)
Installation Environment (Pollution Degree) .................................................................2

Connections ......................................................................... Removable Terminal Blocks

PR011.eps
Weight ................................................................................................. 0.14 lbs. (0.3 kg)
Load cell Dimension (L x W x H) .....................................2.95 x 1.77 x 4.21 (75 x 45 x 107 mm)
Mounting .............................................................................................. DIN Rail 35 mm
6. Adjust CAL. until remote tension meter displays Mounting Orientation ....................................................................................Not Critical
the calibration weight. If using a voltmeter, adjust Ambient Temperature Range: Operating ........................ 14°F to 122°F (-10°C to 50°C)
until Total output voltage displays a value calcu- Ambient Temperature Range: Storing............................. 14°F to 176°F (-10°C to 80°C)
lated by the following formula: Humidity ...................................................................................... 95% Non-Condensing

V=(cal. weight/CAL. full-scale value) x 10 volts Load Cell Input ........................................................................................... .±250mVDC
Note: A negative meter reading after the hanging Input Impedance .................................................................................................100 KΩ
of the weight indicates that the signals from the
load cells are reversed. In the event of a negative Load Cell Supply ................................................................................... ±2.5 VDC ±2%
reading, switch the wires between terminals 10 and Meter Output, Selectable.................................. 0 to 100µA / 0 to10V, Max. Load 5 mA
11. Process Output, Selectable .................................... 0 to 20 mA / 4 to 20 mA / 0 to 10V
Process Output Load (Current)........................................................................... .≤ 500 Ω
7. Remove weight and check that outputs return to 0. Process Output Load (Voltage).......................................................................... > 5000 Ω
If not, repeat steps 3 through 6.
Zero Range Adjustment ........ 50% of Load Cell Rating [Max. 250m VDC (±125 mV)]
Gain Adjustment ..............................................................................................11 to 510
Alarm level adjustment:
Accuracy ................................................................................................ Better Than 1%
Apply a weight to the tension sensing roller equal to
the value that should activate the alarm. Adjust Alarm Output Voltage ..............................................................................24 VDC ±15%
Alarm Output Load ............................................................................................. > 650 Ω
ALARM potentiometer until ALARM LED lights up.
Alarm output will be high (+24 V) whenever tension
drops below the alarm level.

© 2002 Montalvo 8/1/02

 Block diagram for module type M3200-ce

Load cell
supply 9 1 L supply

Voltage Switch
+2.5VDC

Load cell PSU 5 GND

supply V+
12
-2.5VDC Power V-
+24V 3 N supply

Total output (process)

14 0-20mA/
4-20mA/
GND 15 6 0-10V
Cal.
4 6 GND
500 ohm
5
Load cell + signal
10 gain 100 kohm Total output (meter)
0 - +250mV gain
x 1-60 13 0 to 100 µA/
Load cell - signal x 10
11 0 to 10V
0 - -250mV
3
+ 100% - 100%
Zero
7

+ 100% Alarm output

16 24VDC ± 15%
Alarm Level Load > 650 ohm

WD061.eps

Load cell installation Mechanical specifications

Dimensions in inches (mm)

2.95 (75)
Load cell 1, Type S,FL,PB, UPB
Type 1 connector 3 pole (a-c)
Load cell, Type N Type 2 connector 6 pole (1-3)
Load cell
supply +2.5V
2 Black 2/b Black
9
0

1 White 1/a White

10

10

M3200 LOAD CELL AMPLIFIER

3 Red 3/c Red 12
10 10 1: Line L
0 0 Load cell
2:
supply -2.5V 3: Line N
4.21 (107)

15 4:
5: Ground PE
6: Ground
7: NC.
Load cell 2 Load cell 8: NC.
11
- signal 9: +2.5V Supply
0.24 (6.4)

10: + input +/- 250mV

Load cell 11: - input +/- 250mV
10
+ signal
5 2/b Black 12: -2.5V Supply
13: Total output 0-10V / 0-100 A
0

4 Green 1/a White

10

10

14: Total output 4-20 mA / 0-20 mA/ 0-10V

6 3/c Red 15: Ground
10 10 16: Alarm output
0 0

Programming
1.42 (36)
Output 13:
Total : 0-10V 3 on
*Total : 0-100 A 3 off
10 11 12 13 14 15 16
1

Output 14:
2

1.77 (45)

*Total : 4-20mA 4 off, 5 on, 6 off

3

ALARM

ALARM
POWER

Total : 0-20mA 4 on, 5 off, 6 off

CAL.
ZERO
4
5

Total : 0-10V 4 on, 5 off, 6 on

6

*Factory set
WD050.eps
7
8

IL078.eps

© 2002 Montalvo 8/1/02