Explanation of Functions
5.1 Alarm relay low setpoint
Display: AxLo
Range: Any display value or OFF
Default Value: OFF
Displays and sets the low setpoint value for the designated alarm relay x. Note x will be replaced
by the relay number when displayed e.g. A1Lo for relay 1. Use this low setpoint function if a
relay operation is required when the display value becomes equal to or less than the low setpoint
value. To set a low alarm value go to the AxLo function and use the ^ or v push buttons to set
the value required then press F to accept this value. The low alarm setpoint may be disabled by
pressing the ^ and v push buttons simultaneously. When the alarm is disabled the display will
indicate OFF. If the relay is allocated both a low and high setpoint then the relay will activate
when the value displayed moves outside the band set by the low and high setpoints. The value at
which the relay will reset is controlled by the AxHY function.
Example:
If A1Lo is set to 10 then relay 1 will activate when the display value is 10 or less.
Display Value
Time
A Lox
A HYx value
A Lo
A HY
x
x
plus
Relay
activates
at this value
or below
Relay
resets
above this
value
Alarm low operation with hysteresis
5.2 Alarm relay high setpoint
Display: AxHi
Range: Any display value or OFF
Default Value: OFF
Displays and sets the high setpoint value for the designated alarm relay x. Note x will be replaced
by the relay number when displayed e.g. A1Hi for relay 1. Use this high setpoint function if a
relay operation is required when the display value becomes equal to or more than the low setpoint
value. To set a high alarm value go to the AxHi function and use the ^ or v push buttons to
set the value required then press F to accept this value. The high alarm setpoint may be disabled
by pressing the ^ and v push buttons simultaneously. When the alarm is disabled the display
will indicate OFF. If the relay is allocated both a low and high setpoint then the relay will activate
when the value displayed moves outside the band set by the low and high setpoints. The value at
which the relay will reset is controlled by the AxHY function.
18 of 56 PM4IVMAN-2.4-0
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