AMALGAMATED INSTRUMENT PM4-TR, Руководство по эксплуатации и инструкция

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2.0
with a
A1PS
value of
50
then the relay will remain energised for
2.0
seconds every time the
display passes a multiple of
50
. Note: If the pass time exceeds the time taken to reach consecutive
pass values then the instrument will “store” any relay operations it does not have time to activate
and will perform these activations when the total display update rate allows. For this reason the
relay may be seen to activate repeatedly for a period after the total update rate has slowed down
or stopped.
7.3 Alarm relay low setpoint
Display:
A
x
Lo
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
A
x
Lo
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
A
x
HY
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 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
7.4 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
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