Swann AMI Codes-II Operator's Manual page 88

AMI Codes-II
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
5.3.1.2
86
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
 Lack of reagents
 Process values out of programmed ranges.
Program alarm levels, hysteresis values and delay times for the
following parameters:
 DIS
 pH
 Temperature
 Sample flow
The alarm values of Sample Flow and Temperature can be
programmed in menu as well
Alarm DIS.
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: 0.00–10.00 ppm
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: 0.00–10.00 ppm
Hysteresis: Within the hyst. range, the relay does not switch. This
prevents damage of relays contacts when the measured value
fluctuates around the alarm value.
Range. 0.00–10.00 ppm
Delay: Duration, the activation of the alarm relay is retarded after
the measuring value has risen above/fallen below the programmed
alarm.
Range: 0.00–28'800 sec
Alarm pH: Only available if pH option is installed. Define the
measuring value, which should issue an alarm high respectively
low.
(5.3.1.3, p. 87 or 5.3.1.4, p.
A-96.250.571 / 050517
88)