ABB ACQ580 - Page 365

Fault tracing 361
D406 Maximum flow
protection
Programmable fault: 80.17
Maximum flow protection
Actual flow is exceeded the
defined fault level.
Check the system for leakages.
Check flow protection settings in
parameters 80.15 Maximum flow
,
80.17 Maximum flow protection and
80.19 Flow check delay.
D407 Minimum flow
protection
Programmable fault: 80.18
Minimum flow protection
Actual flow is below the
defined fault level.
Check that the inlet and outlet valves
are open.
Check flow protection settings in
parameters 80.16 Minimum flow,
80.18 Minimum flow protection and
80.19 Flow check delay.
D408 Outlet minimum
pressure
Programmable fault: 82.30
Outlet minimum pressure
protection
The measured outlet pressure
is below the defined fault limit.
Check the pump outlet for leakages.
Check the configuration of outlet
pressure protection.
See parameter 82.30 Outlet minimum
pressure protection and 82.32 Outlet
minimum pressure fault level.
D409 Outlet maximum
pressure
Programmable fault: 82.35
Outlet maximum pressure
protection
The measured outlet pressure
is above the defined fault limit.
Check the pump outlet for blockages
or closed valve.
Check the configuration of outlet
pressure protection.
See parameters 82.35 Outlet
maximum pressure protection and
82.38 Outlet maximum pressure fault
level.
D40A Inlet minimum
pressure
Programmable fault: 82.40
Inlet minimum pressure
protection
The measured inlet pressure is
below the defined fault level.
Check the pump inlet for blockages or
closed valve.
Check the configuration of inlet
pressure protection.
See parameters 82.40 Inlet minimum
pressure protection and 82.42 Inlet
minimum pressure fault level.
D50B Pipe fill-timeout
Programmable fault: 82.25
Soft pipe fill supervision
Soft pipe fill has reached
timeout limit. The PID output is
not reached the setpoint after
reference ramping is ended
and the timeout limit is
elapsed.
Check the pipe for possible leakage.
See parameter 82.25 Soft pipe fill
supervision and 82.26 Time-out limit.
0xD401 Max cleaning fault
Programmable fault: 83.35
Cleaning count fault
The maximum number of
cleanings are reached in the
defined time. The pump
cleaning is unable to clean the
pump and hence, manual
cleaning is required.
Check the pump for blockages.
Clean the pump manually if needed.
Check parameters 83.35 Cleaning
count fault
to 83.37 Maximum
cleaning count.
0xD402 High level
Programmable fault: 76.93
LC high level action
Water level is reached the high
level limit. Level control is
unable to control the level for
the following reasons:
• running out of pumping
capacity or
• analog feedback sensor
failure.
Check the analog level sensor.
Check that all pumps are operating
normally.
Check parameters 76.91 LC high
level switch and 76.93 LC high level
action.
Code
(hex)
Fault / Aux. code Cause What to do