Driving A Bidirectional Proportional Valve - Danfoss PLUS+1 Technical Information

Technical Information
Driving a Bidirectional
Proportional Valve
Output Configurations for PLUS+1® Controllers
Option 1 – H bridge configuration for single coil
Certain output pin pairs may be set for the H bridge configuration. Please refer to the API
specification for the pinouts on a particular hardware. This is an open loop PWM configuration
(PinConfig = 7).
+Batt
Ground
+Batt
Ground
Option 2 – closed loop current controlled configuration for single coil
You may also use two outputs configured for closed loop current control to drive a bi-directional
valve. Certain output pin pairs may be used for this configuration (PinConfig = 8). Set the current
command to the desired milliamps. Please refer to the API specification for the pinout pairs available
on a particular hardware.
520L0922 • Rev EA • Sep 2013
H-bridge
Logic circuits
Con guration
H-bridge
Logic circuits
Con guration
PWM Closed
Loop Current
Logic circuits
Con guration
PWM Closed
Loop Current Logic circuits
Con guration
FET
FET
Load
FET
FET
2299
FET
FET
Load
FET
FET
2300
7