Page 4
IronHorse GSD7 DC Drives User Manual – 1st Ed, Rev C – 10/24/2018
i
rOn
H
OrSe
GSD7 S
erieS
DC D
riveS
G
eneral
i
nfOrMaTiOn
The GSD7 series reversing speed control DC drive is designed to provide rapid reversing, quick and
precise stopping, or rapid cycling for a wide range of DC motor applications. The GSD7 series drives
utilize zero-speed-detect and solid-state-assisted dynamic braking circuits. These circuits eliminate
contact arcing and failed braking problems. The zero-speed-detect circuit also eliminates the motor
problems associated with plug reversing a motor by not reapplying power to the motor until zero
speed is obtained.
•
Designed so that upon a power loss condition to the drive or an E-stop condition, the drive will drop
into a dynamic brake condition to safely and quickly bring the motor to a stop and remain there until
power is reapplied and a run condition is recognized
•
Extremely small package size that fits the industry standard footprint for both vertical and horizontal
mounting patterns
•
Designed for DC Permanent Magnet and Shunt Wound motors
•
Incoming AC voltage is converted to adjustable full wave rectified DC voltage to operate the DC
motor A full wave field voltage is provided for shunt wound motors also
Carefully check the DC Drive for shipping damage. Report any damage to the carrier immediately.
Do not attempt to operate the drive if visible damage is evident to either the circuit or to the
electronic components.
s
tanDarD
f
eatUres
•
Input voltages 120/240VAC @ 50/60Hz; output 0–90/180VDC
•
Adjustable horsepower settings
•
Barrier terminal blocks
•
Full-wave bridge supply
•
1% speed regulation with armature voltage feedback
•
Adjustable Minimum speed, Maximum speed, IR Compensation, and Current Limit
•
Line voltage compensation
•
5kΩ speed potentiometer with leads, dial, and knob included.
•
50:1 speed range
•
Transient voltage protection
•
Inhibit circuit permits start & stop without breaking AC lines
•
Shunt field supply provided
•
On-board dynamic braking resistor
•
Automatic dynamic braking on power loss
•
Capable of plugging (reversing motor armature polarity to rapidly change motor direction while it is
still running)
•
Available in open-frame chassis
