Dip Switches - Grundfos PM 2 Installation And Operating Instructions

5.1 DIP switches

The PM 2 has a number of settings which can be
made with the DIP switches behind the control panel.
See fig. 6.
OFF/ON OFF/ON
1.5 BAR 1
+ 0.5
2
+1.0 + 1.0
3 +1.0 +1.0
4 4 +1.0 +1.0
5 5 STOP = START + 1 STOP = START + 1 BAR
6 6 AUTO RESET
7 ANTI CYCLING ANTI CYCLING
8 MAX RUN 30 MIN. MAX RUN 30 MIN.
Fig. 6 DIP switches
DIP switch
No. Name
1-4 START
5 STOP = START + 1 BAR
6 AUTO RESET
7 ANTI CYCLING
8 MAX RUN 30 MIN.
10
START START
Description
Start pressure (p
start
With these DIP switches the start pressure can be set
from 1.5 to 5.0 bar in steps of 0.5 bar.
Example:
DIP switch 1 = "ON"
DIP switch 2 = "ON"
Start pressure = 1.5 + 0.5 + 1 = 3 bar
See section 7.2.1 Starting and stopping conditions.
Start/stop with 1 bar differential pressure
(This operating mode is only suitable for systems with
a pressure tank).
When the DIP switch has been set to "ON", the pump
stop pressure will be equal to p
See section 7.2 Start/stop with 1 bar differential
pressure.
In systems without a pressure tank, the DIP switch
must be set to "OFF".
Automatic resetting of alarms
When the DIP switch has been set to "ON", the
cycling and dry-running alarms will automatically be
reset if they have been activated. See section
8.1 Auto-reset.
Anti-cycling
When the DIP switch has been set to "ON", the pump
will be stopped in case of cycling. See section
8.2 Anti-cycling.
Maximum continuous operating time (30 minutes)
When the DIP switch has been set to "ON", the pump
will automatically be stopped if it has been running
continuously for 30 minutes. See section
8.3 Maximum continuous operating time
(30 minutes).
)
+ 1 bar.
start
Default setting
All set to OFF
(p = 1.5 bar)
start
OFF
(start/stop according
to water
consumption)
OFF
(manual resetting)
OFF
OFF