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RS8GV202 © Danfoss 2016-06
AK-LM 340
Configuration - continued
Difference pressostat
1. Go to Configuration menu
2. Select Difference pressostat
3. Difference pressostat
3 - Difference pressostat
The general differential pressostats can be used for
functions with relay outputs.
The function can be connected to alarm limits and
alarm texts.
The following is to be set/read for each differential
pressostat:
• Name
• Which sensor is connected as pressure 1
• Which sensor is connected as pressure 2
(the difference is calculated as pressure 1 minus
pressure 2)
• Ext. Stop input select
When the signal is received, the regulation is
stopped and all alarms from the function are
omitted.
• Cut in pressure.
In the event of a low pressure difference, the relay
cuts in, but only when the measurement has re-
mained low for the entire delay period.
• Cut out pressure.
In the event of a high pressure difference, the relay
cuts out again, but only when the measurement has
remained high for the entire delay period.
• Cut in delay
• Cut out delay
•
High alarm limit
High alarm limit
•
Alarm delay high
Time delay for high alarm
•
Alarm text high
Indicate alarm text for the high alarm
•
Low alarm limit
L
ow alarm limit
•
Alarm delay low
Time delay for low alarm
•
Alarm text low
Indicate alarm text for low alarm
In our example we use the settings shown.
