Super-systems X5 Manuel d'utilisateur télécharger pdf (Page 33)

°C

OP1

275.0

A / M

1 2 3

Ilba

4 - Operation

[C] START-UP DISABLING

∆SP

Disable

Off

Start-up

ramp

down

ramp

∆SP

threshold

SP± range

Disable

∆SP

Off

Start-up

Bloc

Yes

LOOP BREAK ALARM (LBA)

When the controller connection to

the sensor is discontinued or

other faults are detected in the

control loop, AL1 alarm becomes

active after a predefined time of

1... 9999 s from the detection of

the failure (see page 37).

When a sensor failure occours,

the LBA interventrion is immedi-

ate. The alarm state ceases when

the fault condition is no longer

present.

eIn case of ON-OFF control, the

LBA alarm is not active.

[D] ALARM DISABLING AT SENSOR BREAK

Process

variable PV

AL1

#donb = no

#-FS.H = 300°C

Sensor

break

Sensor

replacement

AL1

#donb = yes

#Sc.Hi = 500°C

For those alarms that are configured to be different than LBA, it is possible

to set the parameter

#donb

(disable on break).

Set:

no To maintain the alarm status when a sensor break is detected.

yes To disable the alarm intervention when a sensor break is detected. Once

the sensor has been changed, the alarms that were active before the

sensor break are activated again

X5-SSI-uk 18-03-2009 17:53 Pagina 33

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Super-systems X5 Manuel d'utilisateur Page 33

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