Danfoss PLUS+1 Technical Information page 8

Technical Information
Driving a Bidirectional
Proportional Valve
(continued)
8
Output Configurations for PLUS+1® Controllers
Option 3 – push/pull configuration for dual coil
You may also use two outputs to drive a bidirectional dual coil valve such as a dual coil EDC when
wired as shown below. This configuration will allow you to check the resistance of the coils for more
accurate diagnostics. Setting PinConfig = 4 on both outputs will give closed loop current control.
Refererence FMEA Considerations, pages 10 and 11.
+Batt
Ground
+Batt
Ground
520L0922 • Rev EA • Sep 2013
PWM Closed
Logic circuits
Loop Current
Con guration
PWM Closed
Loop Current Logic circuits
Con guration
PWM Closed
Logic circuits
Loop Current
Con guration
PWM Closed
Logic circuits
Loop Current
Con guration
FET
Coil A
FET
FET
Coil B
FET
2302
FET
Coil A
FET
FET
Coil B
FET
2303