Warning: Keystart 9620/9621
Warning: Keystart 9620/9621
Warning: Keystart 9620/9621
revision F, 2015-04-22
section 40 & 75
Keystart 9620/9621
Engine & Generator Controls
Installation Instructions
Please read the following information before installing. A visual inspection of this product for damage during
shipping is recommended before installation. It is your responsibility to ensure that qualified mechanical and electrical
technicians install this product. If in doubt, please contact your local Murphy or Enovation Controls representative.
General Information
W A R NIN G
BEFORE BEGINNING INSTALLATION OF THIS PRODUCT
Disconnect all electrical power to the machine
Make sure the machine cannot operate during installation
Follow all safety warnings of the machine manufacturer
Read and follow all installation instructions
General
Keystart 9620 and 9621 engine control modules provide manual
start/stop and automatic fault shutdown protection for generators,
pumps and other engine-driven applications.
Operator control of the engine is through a four-way keyswitch, with
six LEDs for indication of status and faults see Front View diagram
for details. Electrical connection and circuit board jumper/
potentiometer configuration options are at the rear see Rear View,
Connection and Settings section below.
Specifications
Power Supply
Operating voltage, steady state: 7 to 30 VDC
Operating voltage, brown out / cranking: 5 VDC minimum
Current consumption: < 100mA
Inputs
Fault switch inputs: close to negative DC during fault
Generator AC input (model 9621 only):
70 270 VAC rms, <50 to >60 Hz nominal
Magnetic pickup input (model 9621 only):
3.5 21 VAC rms, <2000 to >6500 Hz nominal
Adjustable Settings
Preheat timer: 0 or 10 sec, default = 0 sec,
operation configurable by circuit board jumpers
Fault override timer: 2 to 20 secs (VR1), default = 10 secs
Overspeed trip level (model 9621 only): 100 to 130% (VR3) of
nominal calibrated speed, default = 110% (of 50 or 60 Hz)
Physical
WARNING: please note differences in rear circuit board
configuration links between models manufactured before
and after April 2015. Incorrect configuration may
result in permanent damage to the Keystart.
Panel Installation
Keystart is designed for front-of-panel mounting in a DIN standard
92 x 92 mm (3.6 x 3.6 in.) cut-out. Allow 75mm (3.0 in.) behind the
panel front for case depth, keyswitch and cable connection.
Secure the case to the panel with the two ratcheted mounting clips:
1.
2.
Model Options
3.
At the rear of the panel,
refit the two mounting
clips into the slots on
the Keystart case (D).
Slide each clip forward
until the arms (E) are
secured behind the
panel face. Ratchet
mechanism (F)
prevents the clip from
moving backward.
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time. MURPHY products and
the Murphy logo are registered and/or common law trademarks of Enovation Controls LLC. This document, including textual matter and illustrations, is copyright protected by
Enovation Controls Ltd., with all rights reserved. 2015 Enovation Controls Ltd. A copy of the warranty may be viewed or printed by going to http://www.fwmurphy.com/warranty.
Electrical Connection
DANGER !
HIGH VOLTS
Electrical connection to
0.5 to 1.5 mm / 16 20 AWG
panel wiring is by spring-clamp
terminals at the rear.
Minimise controller output load current (i.e. wear and tear, and
potential damage) by using slave relays between the controller
outputs and high power end devices such as fuel and starter
solenoids.
Insert the wire into the terminal (B), checking that the insulation
is clear of the clamp. Release the screwdriver/spring clamp
pressure and check that the wire is secure.
Keystart 9620/9621 installation instructions
Terminal functions
Pin Function
1
2
4
12
Charge fail
The charge fail LED lights, without a shutdown or alarm,
when pin 5 is connected to battery negative. When using a
charge alternator, connect pin 5 to the alternator warning
lamp (WL) terminal. (Note: pin 5 supplies the alternator
excitation current).
6
7
8
9
10
Alarm output
Pin 10 is a semiconductor-based (open collector NPN
transistor) output that gives a negative DC output immediately
after a fault shutdown. Output rating is 250mA max. The output
typically drives an audible/visible alarm circuit, using a slave
relay with suppressed coil see Typical Connection diagram.
11
13
14
Generator AC Live
Generator AC Neutral
DANGER !
HIGH VOLTS
Typical Connection
Speed calibration
Speed calibration is a two stage process:
1) Nominal speed calibration: potentiometer VR2
The factory default setting is for generator AC speed sensing,
with standard models for either 50 or 60Hz nominal calibration.
To recalibrate for other systems: