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VARIABLE SPEED DC CONTROL
OMDC-125
Series
U Dual Voltage 120/240 Vac or 24/36 Vac
U Adjustable Horsepower Settings
U Full Wave Bridge Supply
U 1% Speed Regulation with Armature
Voltage Feedback (±
Feedback)
U Adjustable Min and Max Speeds
U Fixed 0.5 Sec Acceleration
U 5 kΩ Speed Potentiometer
(Leads, Dial and Knob Included)
U Line Voltage Compensated
U 50:1 Speed Range
U Chassis Mount
The OMDC-125 Series variable speed DC Control is
a cost efficient, reliable control for PM, shunt wound,
and universal motors that incorporates up-to-date
design and engineering into a compact package.
Installation and field adjustments are facilitated
using a barrier type terminal strip and large, easily
adjustable trimpots. Adjustable horsepower range: 120
Vac; 1⁄8 to 1⁄2; 240 Vac; 1⁄25 to 1⁄4 and 1⁄4 to 1. The OMDC-
123D-C model operates on low input voltage of
24/36 Vac with an output of 150 mA to 5.5 ADC.
SPECIFICATIONS
Dimensions: 92 W x 108 H x 33 mm D (3.63 x 4.25 x 1.3")
Weight: 227 g (8 oz)
OPERATING CONDITIONS:
Temperature: -10 to 45°C (14 to 113°F)
AC input Voltage: ± 10% rated line voltage
Input Frequency: 50/60 Hz
1
⁄2% with Tach
potentiometer
OMDC-125DV-C shown
smaller than actual size.
STANDARD FEATURES
U
Adjustable IR compensation
U
Adjustable current limit
U
Overload capacity (200% for
one minute)
U
Transient voltage protection
U
Shunt fields supply provided
U
Voltage following mode
or DC tachometer follower
by supplying ungrounded
analog
input signal (0 to 12
Vdc)
U
DC tachometer feedback
U
Inhibit circuit permits start
and stop without breaking
AC lines
AC INPUT 50/60 HZ: 120 Vac SINGLE PHASE INPUT,
0 to 90 Vdc OUTPUT
H.P. MAX AC AMPS KVA MAX ARM* AMPS DC
1
2.0 0.24 1.6
⁄
8
1
3.5 0.42 2.7
⁄
4
1
4.4 0.53 3.4
⁄
3
1
6.5 0.78 5.0
⁄
2
* Minimum armature Amps: 150 mA DC
240 Vac SINGLE PHASE INPUT, 0 to 180 Vdc OUTPUT
H.P. MAX AC AMPS KVA MAX ARM* AMPS DC
1
1.8 0.42 1.4
⁄
4
1
2.2 0.53 1.7
⁄
3
1
3.3 0.78 2.5
⁄
2
3
4.8 1.15 3.7
⁄
4
1 6.5 1.56 5.0
Speed
kit included.
To Order
MODEL NO. HP RANGE INPUT OUTPUT OPTIONS
OMDC-123D-C 150 mA to 5.5 ADC
36 Vac 0 to 30 Vdc
OMDC-123D-C-2A 150 mA to 5.5 ADC
36 Vac 0 to 30 Vdc
OMDC-123D-C-5 150 mA to 5.5 ADC
36 Vac 0 to 30 Vdc
1
OMDC-125DV-C
OMDC-125DV-C-2A
OMDC-125DV-C-5
1
to
⁄
⁄
8
1
to 1* 240 Vac 0 to 180 Vdc
⁄
4
1
1
to
⁄
⁄
8
1
to 1* 240 Vac 0 to 180 Vdc
⁄
4
1
1
to
⁄
⁄
8
1
to 1* 240 Vac 0 to 180 Vdc
⁄
4
24 Vac 0 to 20 Vdc
24 Vac 0 to 20 Vdc
24 Vac 0 to 20 Vdc
* 120 Vac 0 to 90 Vdc
2
* 120 Vac 0 to 90 Vdc
2
* 120 Vac 0 to 90 Vdc
2
—
Independently adjustable linear
accel and decel
4 to 20 mA isolated
signal follower
—
Independently adjustable linear
accel and decel
4 to 20 mA isolated
signal follower
OMDC-HS125 Heat sink 178 L x 159 W x 35 mm D (7 x 6.25 x 1.375")
UL rating for output amps can be increased from 5.5 to 10.0 Amps with suitable external heat sink.
*
Comes complete with speed potentiometer, dial and knob and operator’s manual.
Ordering Examples: OMDC-123D-C, chassis model speed control for 0 to 30 Vdc motors.
OMDC-125DV-C, dual voltage variable speed control for
control for increased Arm Amps usage.
1
to 1 horsepower DC motors and OMDC-HS125, heatsink for OMDC-125 speed
⁄
8
1
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