Bray 71 Seires - Troubleshooting Guide; Resolving Issues

18
Series 71 – Modulating Controller - Electric Actuator
Installation, Operation and Maintenance Manual
Refer to the actuator manual before adjusting or replacing any actuator
components Before testing or acting on any issues check for any active
faults

Resolving Issues
Issue Possible Causes Possible Solutions
S Servo does not
turn on when power is
applied Heartbeat is
OFF
Fuse is blown Verify and replace fuse
S Servo is incorrectly
wired
Verify wire connections
against the wiring diagram
S Servo is not receiving
power
Evaluate the Input Power
connection with a multimeter
or oscilloscope
Power is not correct Check the provided power
against the voltage listed for
the S Servo and actuator
Heartbeat is ON and not
flashing  Heartbeat is
OFF and not flashing
other LEDs ON
Internal timer fault due to
power surge
Remove and reapply power
Contact Factory
Actuator moves back
and forth near setpoint
(hunting)
Excessive noise on the
signal lines
Use an oscilloscope to
evaluate for the presence of
EMI
Utilize EMI reducing
techniques to mitigate the
issue
S Servo not responding
to command signal
S Servo in
autocalibration mode
Check the indicators for
autocalibration mode
S Servo is incorrectly
wired
Verify wire connections
against the wiring diagram
7.0 TROUBLESHOOTING GUIDE
WARNING
Turn off all power and lockouttag out service panel before installing or modifying any
electrical wiring