DRV- Series DC solid-state reversers offer a retrofit solution for conventional electromechanical reversers. With a solid-state H-bridge construction, the internal structure provides a natural discharge path for back-EMF generated at the motor’s turn-OFF. This results in a switch that is maintenance-free, arc-free, and noise-free.
DRV- Series are rated up to 1,500VDC, and 200A continuous. While the “standard model” is designed for directional control only, the “advanced model” further allows pulse width modulation up to 5 kHz, enabling speed control, soft start, and soft-stop programs.
- Forward & reversing of DC motors & actuators
- Solar Trackers
- Cathode/anode electrochemicals
- Peltier element temperature control
Features & Benefits
- Maintenance-free, Arc-free, Noise-free,
- Robustly Built for High Power Loads
- Cutting-edge PWM Models for Advanced Controls
- Customizable, contact us for requirements
- Available Ratings Up to 1.5kVDC and 200A
- PLC or logic level control methods
- 2500Vrms Isolation
- Built-in 200ms Interlock Protection
- Made in Canada; Semiconductor parts from USA/Taiwan
Datasheet and Downloads
Contact us for other requirements.
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 when using DRV-Series solid-state motor reversers.
- Choose SSR with "rated voltage" at least 2x higher the operating voltage.
- If the DC motor does not require plugging, choose SSR with "rated current" moderately higher than the motor's inrush current.
- If the DC motor requires plugging, choose SSR with "rated peak current" moderately higher than the motor's plugging current.
- When in doubt, a good rule of thumb is to choose a SSR with "rated current" 5-8x higher than the motor's nominal operating current.
- Size a heatsink based on highest current that will sustains over 1 second. Typically, this is the stall current.
- Always consider adding a snubber across load terminals. This will help to suppress transients.
Load: 1/4HP DC Motor
[Operating Voltage]: 12 VDC
[Rated Max/Stall 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]: ≥3x 12VDC
with [rated current]: ≥3x 40A(inrush)
with [rated peak current]: 3x 100A(plugging)