EVCO S.p.A.
EVDRIVE04 | User manual ver. 4.0 | Code 144EPDE404
page 60 of 78
9
ALARMS AND ERRORS
9.1
Alarms and errors
The system supports a series of alarms related to both the system (memory, probes, communication, configuration,
etc.), and the regulation algorithm (LoSH, HiSH, LOP, MOP, Low Pressure).
All the alarms, except the parameters alarm (EPar), are automatic, this means that they will be cancelled
automatically once the cause of the alarm is removed.
The presence of an alarm status is signalled using the LED interface and using relays, if suitably configured.
The alarm status is always available in the Alarm status (AlSt), Configuration warning (CoWA) and Algorithm status
(AlgS).
Alarm Status
Short Code
Alarm description
Parameters
Bit 0
EHd1
Memory error
--
Bit 1
EHd2
Configuration error
Bit 2,3
Ecom
Communication error
Pa01, Pa02, Pr48
Bit 4
EPr1
Probe Ai1 error
Pr05
Bit 5
EPr2
Probe Ai2 error
Pr05
Bit 6
EPr3
Probe Ai3 error
Pr05
Bit 7
EPr4
Probe Ai4 error
Pr05
Bit 8
PSer
Power failure
Pa70, Pa71, Pb01
Bit 9
Ebat
Backup battery error
Pa75, Pa76 , Pb01, Ph21, Ph20
Bit 10
Ealg
Algorithm status
Pa11, Pa12, Pa20, Pa21, Pa22, Pa30, Pa31,
Pa32, Pa33, Pa40, Pa41, Pa42, Pa50, Pa51,
Pa52
Bit 12
Epar
Parameters error
--
9.2
Memory error
A memory error occurs when it is not possible to access data stored in the EEPROM memory: it is not therefore
possible to access the parameter values stored on it, so they will assume default values from flash memory. Is also not
possible to store new parameter values.
This alarm can be occurred if the automatic conversion procedure of the temperature and/or pressure parameters is
halted. In this case also the parameters alarm is set and is necessary to reload the default parameters from the flash
memory to clear the memory alarm.
9.3
Configuration error
In the Stand-by off state is checked the correctness and the congruence of the parameters. If the configuration is not
correct, an alarm is generated, signalled by bit 1 of Alarm status (AlSt). To determine the significance of this single bit
Configuration warning (CoWA) contains the error code generated during the parameter verification process.
Code
Reason
What to do
0
Correct configuration (no error)
-
1
Pr06 value invalid, or if Pr06 = 0,
Check parameters Pr06, Ph11, Ph31
Ph11 not set to enable valve, or,
if Pr06 = 1, Ph31 not set to enable valve.
2
Invalid value for parameter PIA1
Set parameter to a valid value
3
Invalid value for parameter PIA2
