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A-96.250.571 / 050517
AMI Codes-II
Program List and Explanations
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
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 (
5.3.1.1
Alarm DIS.
5.3.1.1.1
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: 0.00–10.00 ppm
5.3.1.1.25
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: 0.00–10.00 ppm
5.3.1.1.35
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
5.3.1.1.45
Delay:
Duration, the activation of the alarm relay is retarded after
the measuring value has risen above/fallen below the programmed
alarm.
Range: 0.00–28‘800 sec
5.3.1.2
Alarm pH:
Only available if pH option is installed. Define the
measuring value, which should issue an alarm high respectively
low.
