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Technical Information 

Output Configurations for PLUS+1® Controllers

520L0922

 • Rev EA • Sep 2013

7

Driving a Bidirectional 

Proportional Valve

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).

2299

Load

Ground

+Batt

Logic circuits

FET

H-bridge

Configuration

FET

Logic circuits

FET

FET

H-bridge

Configuration

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.

2300

Load

Ground

+Batt

Logic circuits

FET

FET

Logic circuits

FET

FET

PWM Closed

Loop Current

Configuration

PWM Closed

Loop Current

Configuration

Summary of Contents for PLUS+1 Series

Page 1: ...powersolutions danfoss com MAKING MODERN LIVING POSSIBLE Technical Information Output Configurations for PLUS 1 Controllers ...

Page 2: ...nged Rev 17 Sep 2013 All New layout EA 11 Mar 2013 6 Single Pole Double Throw Switch drawing updated DA 17 Oct 2008 Various Various content update and literature type changed from Tech Note to Technical Information CA 11 Oct 2005 5 Changed sentence Use digital B 13 Jul 2005 1 PVG 120 photo updated A Revisions Revision History ...

Page 3: ...form and aid the reader in the successful application of Danfoss products PLUS 1 Controllers Configurable Outputs Driving Different Types of Loads 4 Driving a Relay or ON OFF Valve 4 Driving an Incandescent Lamp 6 Driving a Bidirectional Proportional Valve 7 Driving a Unidirectional Proportional Valve 9 Driving a PVE Valve 9 Driving a 4 20 mA Device 9 FMEA Considerations Open Ground Wire to Contro...

Page 4: ...s Please refer to the API specification for the particular hardware PLUS 1 controllers have configurable outputs that can be used to drive a variety of different loads Danfoss recommends the following ways for using the PLUS 1 outputs to drive different types of loads Danfoss recommends using a digital output for ON OFF loads such as a relay or valve This encompasses outputs labeled as DOUT or DOU...

Page 5: ...en by the controller Sourcing configuration PinConfig 1 or 0 2296 Relay Optional Ground Batt Logic circuits FET Sourcing or Push Pull Configuration FET Sinking configuration PinConfig 2 or 0 2297 Relay Optional Batt Batt Logic circuits FET Sinking or Push Pull Configuration FET In the Sinking configuration with the load tied to Batt there is the potential for up to 5 milliamps leakage current thro...

Page 6: ...cent lamp has an inrush current Inrush is a spike in current just as you turn the lamp on when the filament is cold Multi function outputs have a hard current limit which will trip the output off if this limit is exceeded When driving an incandescent lamp this can happen even though the average current requirements for the lamp are well within the output pin s drive capability Depending on the inr...

Page 7: ...cuits FET H bridge Configuration FET Logic circuits FET FET H bridge Configuration 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 AP...

Page 8: ...f 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 2302 Coil A Coil B Ground Batt Logic circuits FET FET Logic circuits FET FET PWM Closed Loop Current Configuration PWM Closed Loop Current Configuration Driving a Bidirectional Proportional Valve continued 2303 Coil A Coil B Ground Batt...

Page 9: ...s closed loop current control They are optional for open loop PWM control Refererence FMEA Considerations pages 10 and 11 2304 Load Ground Batt Logic circuits FET PWM Open Loop Configuration FET Driving a PVE Valve When driving a Danfoss PVE valve it is recommended to use the PVE output configuration PinConfig 6 Set the PWM frequency at 4000 Hz 2305 PVE Batt Ground Batt Logic circuits FET PWM Open...

Page 10: ...re driving an EDC type load dual coil and are driving both coils to get a forward reverse type function this could be done by driving one coil bi directionally with no additional outputs consumed If there are enough valves connected to the controller to provide multiple current paths you might be able to reduce the amount of current in each valve enough so that it is no longer above the threshold ...

Page 11: ...above the threshold of any one valve If you have multiple power connections to the controller you might be able to reduce the occurrence of the fault enough so that it no longer a significant risk rates below 100 on the System FMEA You may also be able to improve the wiring integrity to minimize the occurrence of the fault Open Ground Wire to Load Open Load Ground Wire If you are using a dual coil...

Page 12: ...ease contact the Danfoss Power Solution representative nearest you Products we offer Bent Axis Motors Closed Circuit Axial Piston Pumps and Motors Displays Electrohydraulic Power Steering Electrohydraulics Hydraulic Power Steering Integrated Systems Joysticks and Control Handles Microcontrollers and Software Open Circuit Axial Piston Pumps Orbital Motors PLUS 1 GUIDE Proportional Valves Sensors St...

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