Walchem W600 - Virtual Input Alarm Bitfield; Relay Output Alarm Bitfield

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5.5.5 Virtual Input Alarm Bitfield
Virtual Input Alarm Bitfield
Bit Name
Bit No.
Description
VI Types
Low 1 The value drops below the Low Alarm setpoint.
Calculation &
Raw Value only
High 2 The value rises above the High Alarm setpoint.
Calculation &
Raw Value only
Low Low 3 The value drops below the Low Low Alarm setpoint.
Calculation &
Raw Value only
High High 4 The value rises above the High High Alarm setpoint.
Calculation &
Raw Value only
Out of Range 5
The value is outside of the acceptable range. This alarm will
stop the control for any output using the sensor.
Calculation only
Deviation 5
The difference between the two inputs exceeds the
Deviation Alarm setpoint.
Redundant only
Unused
6
Unused
7
Input Failure 8
A value required for a virtual calculation is not
available. This alarm will stop the control for any output
using the sensor.
All VI Types
5.5.6 Relay Output Alarm Bitfield
Relay Output Alarm Bitfield
Bit Name
Bit No.
Description
Control Modes
Output
Timeout
1
The relay has been activated for longer than the
configured time limit. Control is stopped while the
alarm is active.
All modes with
Output Time
Limit setting
Relay Event
Skipped
2 A timer event was not able to be initiated.
All modes with
Event Timer
settings
Turnover Limit 2 Number of Turns exceeds Turnover Limit setpoint.
Plating Control
mode only
Control
Failure
3 The relay control circuit is no longer functioning.
All Control
Modes
Unused
4
Unused
5
Unused
6
Unused
7
Unused
8