West Control Solutions N8840 - Manual (Page 14)

Operation
Error list / Maintenance manager 14 8840 profiler
Name Description Reason Possible remedial action
HCA Heating current
alarm (HCA)
- Heating current circuit
interrupted, I< HC.A or
I> HC.A (dependent of
configuration)
- Heater band defective
- Check heating current circuit
- If necessary, replace heater band
SSr Heating current short
circuit (SSR)
- Current flow in heating
circuit with controller off
- SSR defective
- Check heating current circuit
- If necessary, replace solid-state
relay
LooP Control loop alarm
(LOOP)
- Input signal defective or
not connected correctly
- Output not connected
correctly
- Check heating or cooling circuit
- Check sensor and replace it, if
necessary
- Check controller and switching
device
AdA.H Self-tuning heating
alarm
(ADAH)
- See Self-tuning heating
error status
- see Self-tuning heating error status
AdA.C Self-tuning heating
alarm cooling
(ADAC)
- See Self-tuning cooling
error status
- see Self-tuning cooling error status
LiM.1 stored limit alarm 1 - adjusted limit value 1
exceeded
- check process
Lim.2 stored limit alarm 2 - adjusted limit value 2
exceeded
- check process
Lim.3 stored limit alarm 3 - adjusted limit value 3
exceeded
- check process
Inf.1 time limit value
message
- adjusted number of
operating hours reached
- application-specific
Inf.2 duty cycle message
(digital ouputs)
- adjusted number of duty
cycles reached
- application-specific
E.5
Internal error in DP
module
- self-test error
- internal communication
interrupted
- Switch on the instrument again
- Contact West service
dp.1
No access by bus
master
- bus error
- connector problem
- no bus connection
- Check cable
- Check connector
- Check connections
dp.2
Faulty configuration - Faulty DP configuration
telegram
- Check DP configuration telegram
in master
dp.3
Inadmissible
parameter setting
telegram sent
- Faulty DP parameter
setting telegram
- Check DP parameter setting
telegram in master
dp.4
No data
communication
- Bus error
- Address error
- Master stopped
- Check cable connection
- Check address
- Check master setting