MM301A DC Motor Control

MM300 & MM500 Series

The MM301A dual-voltage single quandrant SCR drive controls 90 or 180 VDC SCR brush-type motors ranging from 1/4 Hp through 2Hp. The MM301A has integrated isolation allowing it 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 seperate drive and isolation card.

This multi-featured chassis drive accepts optional input 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. This drive accepts nearly any DC tachogenerator (7-50 V/KRPM), scaleable using an adjustable tachogenerator gain potentiometer.

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$1,334.33

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Model Number	Enclosure	Maximum Current (ADC)	Input Voltage (VAC)	Output Voltage (VDC)	Power Range		Field / Shunt Supply	Braking	Reversing	Isolation
					HP	kW
MM301A	NEMA 4X	10	115	0 - 90	1/8 - 1	.09 - .75	50 / 100	No	No	0 - 10 VDC 4 - 20 mA
			230	0 - 90	1/8 - 1	.09 - .75	100 / 200
				0 - 180	1/4 - 2	.19 - 1.5

Features

NEMA 4X Enclosure: Water resistant and dust proof enclosure
Field Supply: Voltage output to energize the field winding of a shunt-wound motor
3-Wire Start/Stop: On-board latching relay allows for use of momentary Start/Stop pushbottons
Isolation Logic: Allows floating or grounded 0 - 10 VDC or 4 - 20mA signals. Burr-Brown provides .01% linearity
Diagnostic LEDs: Power, Current Limit
Case LEDs: Power
On-board Fusing: Drives include on-board fusing
Tach Feedback: Accepts tachogenerator feedback for tighter speed regulation
Multi-turn Trim Pots: Minimum Speed and Maximum Speed use 12 turn trim pots for finer tuning
Pre-Wired Switches: ON/OFF, SIGNAL/MANUAL