Swann AMI Powercon Operator's Manual page 81

AMI Powercon
Program List and Explanations
5.3 Relay Contacts
5.3.1
5.3.1.1
5.3.1.1.1
5.3.1.1.25
5.3.1.1.35
5.3.1.1.45
A-96.250.341 / 061015
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.
Note:Above definition assumes that the alarm relay is used as
normally open (Terminals 10/11). If terminals 12/11 are used,
alarm relay normally closed, then the above definition is
inverted. See also
p. 29
Program alarm levels, hysteresis values and delay times for the fol-
lowing parameters:
 Alarm Conductivity
 Sample Flow
 Sample Temp.
 Case Temp. high
 Case Temp. low
Alarm Conductivity
Alarm High: If the measured value rises above the alarm high val-
ue, the alarm relay is activated and E001, is displayed in the mes-
sage list.
Range: 0 S–300 mS
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 S–300 mS
Hysteresis: Within the hyst. range, the relay does not switch. This
prevents damage of relays contacts when the measured value fluc-
tuates around the alarm value.
Range. 0 S–300 mS
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
Alarm Relay, p. 31 and Connection Diagram,
79