DRV-Series Solid-State DC Motor Reversing Contactors, are rated up to 1,000VDC and 200A (continuous). They are commonly used to traverse the direction of DC motors, linear actuators, and solenoid valves.

With a full solid-state H-bridge construction, the internal diode bridge provides a natural discharge path for back-EMF generated at inductive loads’ turn-OFF. This results in a DC switch that is arc-free, wear-free, and noise-free.

Two models are available: DRVS- Standard Model is for polarity reversing only. DRVA- Advanced Model combines the function of both a DC reverser and motor controller, thus can PWM up to 5kHz supporting speed control, soft-start and soft-stop programs.

Sample Applications

• forward and reverse control of DC motors & electromagnets
  
• Solar tracker DC actuators
  
• Cathode/anode electrochemical switching
  
• Precision peltier temperature control

Features & Benefits

Benefits

• Low power loss models with FET output
  
• Rated continuous DC current up to 200A
• Rated inrush current up to 400A(200ms)
• Wide operating temperatures. suitable for mil applications
• Customizable, contact us for requirements
  

Features

• TTL/CMOS/Logic input or PLC input
  
• PWM Adjustment Up to 5kHz
  
• 2500Vrms Isolation Voltage
• Forward and Reverse Dual LED Indicators
• Built-in 100ms Interlock Protection
  

Selection Guidelines:

The following is generally suitable for motors <1HP.

• Choose rated voltage that is 2-3x the operating voltage.
• SSR's continuous current rating must be higher than the motor's maximum current draw lasting over 1 second. This is usually the stall current.
  
• Ensure rated peak current is ≥5x the motor's maximum current draw over 1 second.
  
• Always consider adding a RC snubber across load terminals.

Example #1:
Load: Thompson Actuator Part#:HD12B026-0450ELX1EESD
Operating Voltage: 12 VDC
Rated Stall/Max Current Draw: 18A
Application-specific Current: 5A (nominal), 12A (peak/inrush), 18A (stall), no plugging

Choose DRV-Series DC Reversing Contactor:
with rated voltage: ≥30 VDC
with rated continuous current: ≥1.5x18A
with rated peak current: ≥5x18A

Example #2:
Load: 1/4HP DC Brushed Motor
Operating Voltage: 12 VDC
Rated Stall/Max Current Draw: 20.5A
Application-specific Current: 8A (nominal), 20.5A (stall), 40A (peak inrush), 80A (plugging current)

Choose DRV-Series DC Reversing Contactor:
with rated voltage: ≥30 VDC
with rated continuous current: ≥30A
with rated peak 200ms current: ≥(5x20.5A) and ≥(2x80A)

It is important to understand the stall current draw of the actuator when determining the rating for an SSR (solid state relay). This is because the SSR will experience the maximum transient stress when it is required to switch off an inductive load at this peak current.

Datasheet and Downloads

 Contact us for other requirements.