A-96.250.491 / 190121
AMI Deltacon DG
Program List and Explanations
68
5.3 Relay Contacts
5.3.1
Alarm Relay:
The alarm relay is used as cumulative error indicator.
Under normal operating conditions the contact is active.
The contact is
inactive at:
Power loss
Detection of system faults like defective sensors or electronic
parts
High case temperature
Process values out of programmed ranges.
Program alarm levels, hysteresis values and delay times for the fol
-
lowing parameters:
Cond.1 (sc)
Cond. 2 (cc)
Cond. 3 (dc)
pH
Ammonia
Sample Temp. 1
Sample Temp. 2
Sample Temp. 3
Sample Flow
Case Temperature low and high
5.3.1.1
Conductivity
5.3.1.1.1
Cond. 1 (sc)
5.3.1.1.1.1
Alarm High:
If the measured value rises above the alarm high value,
the alarm relay is activated and E001, is displayed in the message
list.
Range: 0 –3000
S
5.3.1.1.1.25
Alarm Low:
If the measured value falls below the alarm low value,
the alarm relay is activated and E002 is displayed in the message
list.
Range: 0 –3000
S
5.3.1.1.1.35
Hysteresis:
Within the hyst. range, the relay does not switch. This
prevents damage of relays contacts when the measured value fluctu
-
ates around the alarm value.
Range. 0 –3000
S
5.3.1.1.1.45
Delay:
Duration, the activation of the alarm relay is retarded after the
measuring value has risen above/fallen below the programmed
alarm.
Range: 0–28‘800 Sec