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Raychem-AR-H58692-ACS30UIT2Programming-EN-1805
Note:
One RTD must be connected to the circuit for this control mode to function or an RTD failure
alarm will be announced.
TEMPERATURE ALARM FILTER:
This minimizes nuisance alarms by forcing the ACS-UIT2 to verify that the alarm condition
continually exists over the selected period of time before alarming.
Range:
0–999 minutes
Default:
15 minutes
Note:
Setting the Alarm Filter to 0 minutes is mainly for testing and demonstration purposes.
Choosing this option for normal use may cause nuisance alarming since this option may not allow
the ACS-UIT2 time to verify that the alarm conditions exist.
HIGH LINE TEMP CUT-OUT:
If any RTDs assigned to a circuit measures a temperature above this threshold, the ACS-UIT2
generates an alarm and the relay output is turned off. If the high line temperature drops below this
threshold minus the deadband, the output is turned on and normal duty cycle control is resumed.
Range:
High Temperature Alarm value plus 10°F (6°C) to 100ºF (38ºC)
Default:
100°F (38ºC)
HIGH LINE TEMP CUT-OUT ENABLE:
Enables or disables the high line temp cut-out capability. When enabled, the ACS-UIT2 alarms and
the output relay turns OFF if any RTDs exceeds the cut-out value for the alarm filter time period. If
the high line temp cut-out is disabled, the relay output will continue to function normally without the
high temperature cut-out feature.
Options: Enable or Disable
Default: Enable
ASSIGNING GROUND-FAULT ALARM AND TRIP LEVELS
The Setup|G.F. window allows you to set the alarm and trip levels.
Fig. 3.15
Setup|G.F. window (Frost Heave)
Input the Ground-Fault Alarm and Ground-Fault Trip:
GROUND-FAULT ALARM:
When the ground-fault current exceeds this level the ACS-UIT2 goes in alarm.
Range:
10–200 mA
Default:
20 mA
