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High-voltage DC motor speed controllers are designed for motors rated for greater than 50V operating voltage. Open frame or enclosed models with SCR outputs are available. DC drives are used for precise speed control of DC motors and gearmotors in a wide range of industrial applications.
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High Voltage (> 50V) DC Drives
High-voltage DC drives are designated for motors with operating voltages above 50 volts. They are available in open-frame or enclosed configurations with SCR outputs. These DC drives deliver precise speed control for DC motors and gearmotors and are used across a broad range of industrial applications.
For part listing and specifications, go to Shop Now
GSD3 Series DC Drives
IronHorse GSD3 series DC drives are general-purpose, economical variable speed controllers for small DC and universal motor applications, featuring a DC output current rating of 2 amps, adjustable trim pot settings, and quick-connect terminal pins.
- 1/50 to 2/3hp @ 120/240 VAC input
- Full-wave bridge power supply
- Adjustable minimum speed, maximum speed, IR compensation
- Models available in J-mount or L-mount open chassis, as well as in a NEMA 4 enclosure
- Fixed acceleration (0.5 seconds)
- 25:1 speed range, 1% speed regulation
- 5k Ohm Speed pot with leads, knob, and dial included
Starting at
(GSD3-240-2CL)
GSD4 Series DC Drives
IronHorse GSD4(A) series DC drives provide cost-efficient, reliable control for permanent magnet, shunt wound, and universal motors. Installation and field adjustments are simplified using a barrier type terminal strip and large, easily adjustable trim pots to adjust horsepower ranges.
- 1/50 to 2hp @ 120/240 VAC input
- Full-wave bridge supply
- Adjustable horsepower settings, min and max speed, IR compensation, current limit
- Adjustable acceleration and deceleration
- Models available in open chassis, as well as in NEMA 4X enclosure
- 50:1 speed range
- 1% speed regulation with armature voltage feedback (+/- 112% with tach feedback)
- 5k Ohm speed potentiometer with leads, dial, and knob included for open chassis models
- Voltage following or DC tachometer follower by supplying an ungrounded analog input
- DC tachometer feedback
- Inhibit circuit permits start and stop, without breaking AC lines
- Adjustable Accel and Decel trim pots (GSD4A)
- Optional Modbus RTU communications module (GSD4A)
Starting at
(GSD4A-240-2C)
GSD5 Series DC Drives
IronHorse GSD5 series DC drives offer superb flexibility, reliability, and value. A general purpose, economical line of drives rated to 2 horsepower, it provides the ultimate in standard features and versatility.
- For high voltage (> 50V) applications
- 1/8 to 2hp @ 120/240 VAC input
- Packaged bridge supply (full wave)
- Adjustable horsepower settings, min and max speed, IR compensation, current limit
- Adjustable linear acceleration
- 50:1 speed range
- 1% speed regulation with armature voltage feedback (+/- 1/2% with tach feedback)
- 5k ohm speed potentiometer with leads, dial and knob included
- Voltage following or DC tachometer follower by supplying ungrounded analog input
- DC tachometer feedback
- Inhibit circuit permits start and stop without breaking AC lines
Starting at
(GSD5-240-10C)
GSD6 Series DC Drive
The reliable, versatile, and economical GSD6 series is the most fully-featured IronHorse analog DC drive. It provides many standard features typically offered as options by other DC drives manufacturers.
- For high voltage (> 50V) applications
- 1/8 to 3hp @ 115/230 VAC input
- Packaged bridge supply (full wave)
- Adjustable horsepower settings, min and max speed, IR compensation, current limit
- Adjustable linear acceleration and deceleration
- 50:1 speed range
- 1% speed regulation with armature voltage feedback (+/- 1/2% with tach feedback)
- 5k ohm speed potentiometer with leads, dial and knob included
- Voltage following or DC tachometer follower by supplying ungrounded analog input
- DC tachometer feedback (jumper selectable)
- Inhibit circuit permits start and stop without breaking AC lines
- +12 VDC, 12mA power supply, user accessible
Priced at
(GSD6-240-15C)
GSD7 Series DC Drives
With instant reversing, quick stopping, and rapid cycling, The IronHorse GSD7 series DC drives outperform other dynamic braking and reversing drives.
- For high voltage (> 50V) applications
- 1/50 to 1 hp @ 120 VAC input; 1/25 to 2 hp @ 240 VAC input
- Full-wave bridge supply
- Adjustable min and max speed, IR compensation, current limit
- Fixed acceleration (0.5 sec)
- Line voltage compensation
- 50:1 speed range
- 1% speed regulation with armature voltage feedback
- Duty cycles of 3 or 30 cycles per minute depending on model
- 5k ohm speed potentiometer with leads, dial and knob included
- Onboard dynamic brake resistor
- Automatic dynamic braking on power loss or emergency stop
- Shunt field supply provided
Starting at
(GSD7-120-5CR3)
GSD8 Series DC Drives
The GSD8 series DC drives are compact, microprocessor-based motor controllers capable of factory or field configurations for a variety of industrial applications. GSD8 DC drives make use of either a pulse accumulation algorithm (GDS8-240-5C) or a velocity PID algorithm (all other GSD8 drives) that can be easily configured for operation as a speed controller, time-based process controller, or follower drive in a master-follower application.
- For high voltage (> 50V) applications
- 1/2 to 1 hp @ 120 VAC input; 1 to 2 hp @ 240 VAC input
- Digital closed-loop algorithm
- Non-volatile memory storage
- Programmable alarm output
- Power supply accepts 85-265 VAC at 50-60 Hz without switches or jumpers
- Self-contained 5V power supply for external sensor
- Large 4-digit LED display
- European terminal block
- Standard 1/8 or 1/4 DIN panel mounting
- Meets NEMA 4X standards when used with NEMA 4X enclosures
Starting at
(GSD8-240-5C)
