Specifications

FEATURES & BENEFITS
1/20 to 5 Hp
Isolated SCR DC
70
Typical Applications
n Isolated inputs: Accepts floating or grounded signals of 0-10VDC or 4-20mA for controlling the speed of the motor.
Burr-Brown isolation provides .01% linearity.
n Speed range and regulation: 1% regulation over 60:1 speed range. 0.1% regulation over 80:1 speed range with the
addition of a tachometer for feedback.
n User adjustable calibration pots: IR compensation, min speed (12 turn), max speed (12 turn), current limit,
acceleration, deceleration and tachometer.
n Diagnostic LEDs: LEDs for power, run (MM501U only) and current limit status.
n Stopping modes: Start/stop circuitry for remote pushbuttons and switches. External dynamic braking can be added.
Coast to stop by removing power.
n Cage clamp terminal block: Quick and easy wire terminations reduce installation time!
n Additional features: Dual voltage AC input, tachometer feedback mode and on board fusing.
The MM300 and MM500 Series of dual-voltage single quadrant SCR dri-
ves control 90 or 180 VDC SCR brush-type motors ranging from 1/20 Hp
through 5 Hp. The MM311U, MM301U, and the MM501U drives have
integrated isolation allowing them to precisely follow analog current or
voltage signals from external devices or a potentiometer as a reference
for motor speed control. This results in significant labor and material cost
reduction compared to other systems employing a separate drive and iso-
lation card.
These multi-featured chassis drives accept optional inputs for start and
stop. Depending on the application, users can run the drive open-loop
with armature feedback, or closed-loop with tachogenerator feedback for
enhanced performance. These drives accept nearly any DC tachogener-
ator (7-50 V/KRPM), scaleable using an adjustable tachogenerator gain
potentiometer.
MM Series
n Leader/Follower Systems
n Conveyors
n Printers
n Office Machinery
n Web Tensioning
MM501U
MM Series Specifications
Models
Input Voltage
(VAC)
Output Voltage
(VDC)
Field Supply (VDC)
Form
Factor
Max. Output
Current (ADC)
MM311U
115/230
0 - 90 or 0 - 180
50/100/200 (1 amp)
1.5
10.0
25.0
1.37
1.37
1.37
50/100/200 (1 amp)
50/100/200 (3 amps)
Hp Rating
1/20 - 1/8 @ 90 VDC or 1/10 - 1/4 @ 180 VDC
1/4 - 1 @ 90 VDC or 1/2 - 2 @ 180 VDC
1 - 2 1/2 @ 90 VDC or 2 - 5 @ 180 VDC
0 - 90 or 0 - 180
0 - 90 or 0 - 180
115/230
115/230
MM301U
MM501U
MM Dimensions
All dimensions in inches [millimeters]
4.46 [113]
All other models
MM501U
1.80 [46]
0.76 [19]
3.00 [76]
0.77 [19]
9.80 [249]
2.60 [66]
6.90 [175]
6.30 [160]
7.00
[178]
6.30 [160]
0.98 [25]
6.90 [175]
1.40 [36]
For matching DC motors, see pages 37 to 43.
Call us toll free 1•800•MINARIK or download manuals at www.minarikdrives.com
A
SCR DRIVES