bonitron M3528M2, Customer Reference Manual

Page: 19 / 24

User’s Manual
19
5. M
AINTENANCE AND
T
ROUBLESHOOTING
5.1.
T
ROUBLESHOOTING
If a problem occurs on start-up or during normal operation, refer to the problems
described below. If a problem persists after following the steps below, contact the
product supplier or your system integrator for assistance.
Repairs or modifications to this equipment are to be performed by Bonitron approved
personnel only. Any repair or modification to this equipment by personnel not
approved by Bonitron will void any warranty remaining on this unit.
O
UTPUT SWITCHES UPON VOLTAGE REACHING SETPOINT
,
BUT DOES NOT
SWITCH BACK WHEN VOLTAGE RETURNS TO SET RANGE
Ensure that the output latch jumpers are open. Reduce the hysteresis value by
turning the hysteresis potentiometers counter-clockwise.
O
UTPUT NEVER SWITCHES
Ensure that the ranging jumpers are correctly set for the voltage being tested. Turn
the appropriate setpoint potentiometer counterclockwise a full twenty turns, and then
clockwise a full twenty turns, until the signal switches.
O
UTPUT SWITCHES RAPIDLY
Check the monitor signal for noise. Increase the hysteresis of the switching output.
O
UTPUT WILL NOT LATCH
Ensure that the latch jumpers are connected appropriately.
O
UTPUT WILL NOT RESET
Ensure that the monitor voltage is below the set point. Check the wiring of the latch
reset connector. Check that the voltage of the latch reset signal is 24VDC. Remove
and replace the latch jumper.