EVCO EPD4DF3 Installer manual - Manual (Page 50)

EVCO S.p.A. EVDRIVE03 | User manual ver. 3.4 | Code 144EPDE344
page 50 of 70
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, LowPressure).
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