3.5A Bipolar Stepper Motor Drive Card

The Cortex S344 is a standard single Eurocard with 32-way DIN 41612 plug connector to suit Eurocard compatible racking systems.

The board employs the well established bipolar chopped constant current principle to provide a substantial increase in the torque capability of the stepper motor. This at the same time increases the efficiency of the system by eliminating the power dissipating dropper resistors required in the unipolar drive mode.

Drives motors up to 36 V and 3.5 A / Phase. On board output drive current setting (0.7 to 3.5 A). Output overload protection. Synchronisation output for multi-axis systems. Full and half step drive modes. Provision for assembling on oscillator (order code S423) if external clock not available) having clock pulse output, base speed. top speed and stop/run control inputs. TTL and C-MOS compatible control interface. Output disable input to allow manual motor rotation. 5 and 12 V d.c. auxiliary outputs for external device energisation. Additional opto coupled inputs.

Specification:

Supply voltage

Motor	15 - 36 V d.c.
Logic	15 - 24 V d.c.

 

 

 

Motor and logics may share the same supply

Auxiliary outputs	12 V, 50 m
(regulated)	5 V 50 mA d.c.
Motor drive	0.7 - 3.5 A, set on board via DIL
	switch
	switch
Control inputs	C-MOS or open collector TTL compatible.
logic 0	0 - 2 V d.c.
logic 1	9 - 30 V d.c.
Monitor outputs	open collector transistors
logic 0	1 V, 30 mA max.
logic 1	24 V d.c. max.
Clock input	20 kHz max. 10µs min. pulse width.
Operating temperature	0ºC to +40ºC
Weight	700 g

Copyright © 2002 Cortex Controllers Ltd. Cambridge. UK. All Rights Reserved