Grundfos PM 2 User Manual

10
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.
Fig. 6 DIP switches
+1.0
+1.0
4+1.0
5STOP=START+1
6AUTORESET
ANTI CYCLING
MAX RUN 30 MIN.
OFF/ON
START
1.5 BAR 1
2
+
+
1.0
0.5
3+1.0
4+1.0
5 STOP = START + 1 BAR
6
7ANTICYCLING
8MAXRUN30MIN.
OFF/ON
START
DIP switch
Description Default setting
No. Name
1-4 START
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.
All set to OFF
(p
start
= 1.5 bar)
5 STOP = START + 1 BAR
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
start
+ 1 bar.
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".
OFF
(start/stop according
to water
consumption)
6 AUTO RESET
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.
OFF
(manual resetting)
7 ANTI CYCLING
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.
OFF
8 MAX RUN 30 MIN.
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).
OFF

Grundfos PM 2 Specifications

General

Brand	Grundfos
Model	PM 2
Category	Controller
Language	English