AMALGAMATED INSTRUMENT RM4-IV, Operation And Instruction Manual

Page: 18 / 49

Display Value
Time
A Lo
x
A HY
x
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
5.3 Alarm relay high setpoint
Display:
A
x
Hi
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
A
x
Hi
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
A
x
HY
function.
Example :
If
A1Hi
is set to
100
then relay 1 will activate when the display value is
100
or higher.
Display Value
Time
A Hi
x
A Hi
A HY
x
x
minus
Relay
activates
at this value
or above
Relay
resets
below this
value
A HY
x
value
Alarm high operation with hysteresis
18 of 49 RM4IVMAN-2.1-0