Nivus OCM F, Instruction Manual

Page: 95 / 110

Troubleshooting
OCM F - rev. 05 / 06.04.2018 page 95
Error Possible
Reason Correction
No controller
function Connection Check terminal clamps (relays 4 and 5 are dedi-
cated to controller function).
Check power supply of external control relays.
Check input signals from limit contacts and set-
point.
Check output control function by using menu man-
ual controller operation.
Programming Check settings.
Controller enabled?
Controller parameters set?
Analog input set and enabled as setpoint?
Relay outputs enabled?
Observe controller status in I/O menu.
Faulty mA output Connection Check connection clamps for correct wiring and
polarity.
In case of using one or several outputs: check
following systems/indicators if they are potential-
free. Two analog outputs at a time have a common
ground.
Programming Output enabled?
Check if functions have been assigned to correct
output channel.
Check output range (0 or 4…20 mA)
Check output span
Check offset
Check output signal in I/O menu
Following
systems Check cables and connections as well as input
and output clamps.
Check input range (0 or 4…20 mA) of following
sys-tem.
Check input span of following system.
Check offset of following system.
PC / Laptop una-
ble to detect de-
vice No device
driver installed Reinstall driver, on WINDOWS warning press
"Continue anyway“.
Real time clock
shows incorrect
time Buffer battery
is empty Let NIVUS replace the built-in buffer battery.
Attention: replacement must be carried out only by
NIVUS or personnel authorised by NIVUS. Other-
wise the warranty will expire.
Parameter
memory shows no
parameters Buffer battery
is empty Let NIVUS replace the built-in buffer battery.
Attention: replacement must be carried out only by
NIVUS or personnel authorised by NIVUS. Other-
wise the warranty will expire.