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
- Patented design and construction
- Available DC ratings up to 1kV and 200A
- Rated peak current up to 400A(200ms)
- Wide operating temperatures
- 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 200ms Interlock Protection
Selection Guidelines:
You may submit a technical survey via https://www.nominalcontrols.com/pages/survey1, and a member of our team will get back to you with a recommendation.
The following guidelines are generally suitable for DC motors <3HP.
- Choose rated voltage at least 2-3x higher the operating voltage. This is to provide adequate margin for voltage spikes and transients.
- If DC motor will not quick reverse/plugging, ensure SSR's "rated surge current", both magnitude and duration, is significantly higher than the motor's inrush current.
- If DC motor may quick reverse/plugging, ensure SSR's "rated surge current", both magnitude and duration, is significantly higher than the motor's plugging current.
- When in doubt, a good rule of thumb is to choose a SSR with "rated surge current" 5-8x higher than the motor's max current as specified on its nameplate.
- Size a heatsink based on highest current that will last longer than 1 second. Typically this is the stall current.
- Always consider adding a snubber across load terminals. This will help to suppress voltage spikes.
Example #1:
Load: Thompson Actuator Part#:HD12B026-0450ELX1EESD
[Operating Voltage]: 12 VDC
[Rated Max Current (nameplate)]: 18A
[Application Details]: 5A (nominal current), 12A/100ms (inrush current), 18A (rated max/stall current), quick reverse/plugging will not occur.
Choose DRV-Series DC Reversing Contactor:
with [rated voltage]: ≥30 VDC
with [rated peak current]: ≥4x12A (100ms)
with heatsink sized based on 18A stall condition.
Example #2:
Load: 1/4HP DC Motor
[Operating Voltage]: 12 VDC
[Rated Stall/Max Current Draw]: 20.5A
[Application Details]: light load 8A (nominal current), 40A/50ms (inrush current), 20.5A (rated max/stall current), 100A/150ms (plugging current).
Choose DRV-Series DC Reversing Contactor:
with rated voltage: ≥30 VDC
with rated peak current: 2x100A(150ms)
with heatsink sized based on 20.5A stall conditions.
*It is important to understand that the SSR will experience the maximum stress when it is required to switch off an inductive load during stall and/or plugging operation. For operations that require DC motor plugging, please consult us.
Datasheet and Downloads
Rated Voltage | Rated Load Current | Part # | Data Sheet |
40 VDC |
200A (400A/200ms) | DRVA004-200A / DRVS004-200A |
|
75 VDC | 150A (250A/200ms) | DRVA007A-150A / DRVS007A-150A |
|
75 VDC |
200A (300A/200ms) |
DRVA007A-200A / DRVS007A-200A |
|
150 VDC | 200A (250A/200ms) | DRVA01A-200A / DRVS01A-200A | |
40 VDC | 60A (200A/150ms) |
(Miniature) DRVS01-60A | |
100 VDC | 60A (150A/150ms) |
(Miniature) DRVS01-60A | |
200 VDC | 40A (120A/150ms) | (Miniature) DRVS02-40A | |
200 VDC | 50A (200A/200ms) | DRVS02-50A | N/A |
600 VDC | 120A | DRVA06-120A / DRVS06-120A | |
1,000 VDC | 150A | DRVA10-150A / DRVS10-150A |
Contact us for other requirements.