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Potentiometer option
Direct EDC Control
Center-off switch assembly and wiring connections for the control handle.
1224B
From Potenti
From +
Torque Motor
12 or 24 Vdc
Ground
-
B
A
+
NC
COM
NO
EDC
A
B
MCHXXX potentiometer models having either two or single 200 Ohm pots are configured to directly
control Danfoss variable pumps with electrical displacement controls (EDCs). Whether two or single pots,
both require the same electrical connection to the EDC and only one of the dual coils needs to be
connected to achieve forward and reverse pump flow.
Potentiometer option with 1K Ohm potentiometer
Analog setpoint controller input
( + )
(
A
)
−
A D
B
C
6
1 2 3
4
5
7
kwa1381515070607
1.
Red
5.
5 Vdc supply
2.
Green
6.
PLUS+1
®
controller
3.
Black
7.
Torque motor
4.
Ground
Technical Information
MCHXXX
Connection diagrams
14 |
©
Danfoss | February 2017
11022667 | BC00000033en-US0601