AERCO Modbus Communications Manual for ECS - Manual (Page 11)

7
8. ALARMS
Table 4. Process Alarms
DISPLAY MEANING
_FSL* PV Full Scale Low Alarm.
_FSH* PV Full Scale High Alarm.
_dEu* PV Deviation Band Alarm
_dHi* PV Deviation High Alarm
_dLo* PV Deviation Low Alarm
Table 5. Diagnostic Alarms
DISPLAY MEANING WHAT TO DO`
EE.Er Electrically Erasable Memory Error:
The value of an operator, or
configuration, parameter has been
corrupted. This fault will automatically take you into
Configuration level. Check all of the
configuration parameters before returning
to Operator level. Once in Operator level,
check all of the operator parameters
before resuming normal operation. If the
fault persists, or occurs frequently,
contact your supplier
S.br Sensor Break
Input sensor is unreliable or the
input signal is out of range. Check that the sensor is correctly
connected
L.br Loop Break
The feedback loop is open circuit Check that the heating and cooling
circuits are working properly
Hw.Er Hardware Error
Indication that a module is of the
wrong type, missing, or faulty. Check to ensure that the correct items
are installed. See page A-4 for procedure
to clear the Hardware Error.
n o . i o No I/O
None of the expected I/O items are
installed This error message normally occurs
when pre-configuring a controller without
installing any of the required I/O
modules.
r m t . F Remote input failure.
The remote DC input is open or
shorted Check for open or short circuit wiring on
the remote DC input.
L L L L Out of range low reading Check the value of the input
H H H H Out of range high reading Check the value of the input
E r r 1 Error 1: ROM self-test fail Return Controller for repair
E r r 2 Error 2: RAM self-test fail Return Controller for repair
E r r 3 Error 3: Watchdog fail Return Controller for repair