Emerson XEV22D Dokumentacja Pobierz pdf (Strona 25)

Alarm Recovery Display Messages • 19

16 Display Messages

16.1.Alarm Recovery

Probe alarms P1 and P2 start a few seconds after

the fault in the probe; they automatically stop few sec-

onds after the probe restarts normal operation. Check

the connections before replacing the probe. Maxi-

mum and minimum alarms HSH, LSH, MoP, and

LoP automatically stop as soon as the variable returns

to normal values.

The controller is provided with an internal check

to verify memory integrity. Alarm EE flashes when a

failure in the internal memory is detected. In this case,

call for service.

Message Cause Outputs

nA None of the digital in-

puts configured as

CCL are activated

Valve closed

Pf The PEd time is

elapsed and the regu-

lation is stopped.

Valve closed after

PEd. There is a

probe error.

P1 Temperature probe

fault

According to PEo

and PEd

P2 Pressure transducer

fault

According to PEo

and PEd

HSH High superheat alarm By PI

LSH Low superheat alarm Valve closed

LPL Low pressure limit See LPL parame-

ter

MoP Maximum Operating

Pressure

See dML parame-

ter

LoP Lowest Operating

Pressure

See dML parame-

ter

StF Start Function en-

abled

See SFd parameter

StP Regulation stop

caused by Std and Sti

Valve closed

EE Memory anomaly

Table 16-1 - Alarm Signals

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 35 36

Komentarze do niniejszej Instrukcji

Brak uwag

Emerson XEV22D Dokumentacja Strona 25

Komentarze do niniejszej Instrukcji