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Copyright 19 96 by Anaheim Automation. All rights reserved. No part of thi s
y be reproduced, transmitted, transcribed, stored in a retrieval system, or
transl ated into any language, in any form or by any means, electronic, mechanical ,
al, chemical, manual, or otherwise, without the prior written permission
of Anaheim Automation, 910 E. Orangefair Lane, Anaheim, CA 92801. The onl y
MODEL MDM40001 exception to this would be use of the program examples in this manual.
effort has been made to
st microstepping driver that incorporates advanced surface mount and ASIC technology. The MDM40001 is compact, easy t o interface, and powerful enough to handle the most demanding applications. Anahei m mportant criteria in many low and medium ......................................... 2 power applications. The MDM40001 was designed to meet those needs and offer s innovative features. ................................ 3 The MD M40001 will deliver a peak current of 4 Amperes per phase at 40 V
Pin# Description 4 Amp Microstep Driver 1 A positive going edge on this isolated input 6 Amp Microstep Driver advances the motor one increment. The size of the increment is 10 Amp Microstep Driver dependent on the Microstep Select Inputs of Switch 1. 2 Direction: This isolated input is used to change the direction of the motor. Physical direction also depends on the connection of the motor windings. 3 This input is used to supply current to the Isolated Inputs. A higher voltage may be used, b
: 1 Phase Current Reduction Input. A resistor between this pin and pin 2 (Connector P2, Current Adjust) will proportionately reduced the current in both windings (1 second after the last positive going edge of the step clock input). The amount of current reduction will depend on the value of the resistor used. 2 Phase Current Adjustment input. A resistor connected between this input and the ground input (connector P2, Pin 3) is used to adjust the maximum Phase Current in the motor. A resisto
Drain-Source on Fullstep Output .65 ohm s ABSOLUTE MAXIMUM RATINGS +12 TO +48 VDC 70° C 40° TO +125° C 15 mA Max EE C, V+ = 40VDC) ITEM TEST Input Voltage 12 24 40 V Phase Output Current .4 3 A Phase Output Current 4 A Quiescent Current Outputs Floating 85 mA 12 W Dissipation Input Forward Current Input Pins 7 15 mA 1, 2 , 4, 5 Input Forward Voltage 1.5 1.7 V 5 V Output Current Fault, Fullstep 25 mA Outputs Collector-Emitter Fault Output 140 V Collector-Emitter Fault Output 0.2 V Saturation
the output current in the MDM40001 can be accomplished by connecting an external resi stor (1/8 watt or higher) between pins 1and 2 of connector P2 and ocurr s rostepping is determined differently from automatical 1 second after the last positive going edge of the step clock input. Se e that of a half/full unipolar driver. In the MDM40001, a sine/cosine output function is in rotating the motor. The output current for a given motor is determined by th e rating and the configuration for how
4 Lead Motors be configured as 4, 6, or 8 leads. Each configuration requires different d configurations and the procedures to determine their output current. 6 Lead Motors ing a 6 lead motor in a half-coil configuration of the coil to the center tap) use the specified per Phase (or unipolar) current rating t o determine the current adjustment resistor value. This configuration will provide more torque at higher speeds. Use this to determine the current adjustment resistor value. t to deter
CONNECTING THE STEP MOTOR between pins 7 and 8 on connector P2. Phase Part Number Series 2&4 of the Step Motor is connected between pins 5 and 6 on connector P2. ( Unipolar Rating ) [ Amps ] 1% Resistor Value [ Ohms ] NOT E : The physical direction of the motor with respect to the direction input wil l on the connection of the motor windings. To reverse the direction of the motor 1.0 487 2.0 976 to the direction input, switch the wires on Phase 1 & Phase 3 . 3.9 1910 : Do not connec
The number of microsteps per step is selected by switches 1, 2, 3, and 4 of the DI P The MDM40001 has an active LOW open drain output at Connector P1, Pin 7 labeled Table 5 shows the standard resolution values along with the associated inputs utput is TRUE (active low) for the duration of the full step. A full for the select switches 1, 2, 3 and 4. The standard waveforms are sinusoidal. p occurs when either Phase 1&3 or Phase 2&4 cross through zero (ie. full current in winding and 0 curren
tion Select inputs are synchronized with the positive The MDM40001 is internally protected against over temperature and short circuits. t. When the Step Clock input goes high, the Direction perature set point is between 60 EC and 70 EC. Care should be taken when and Microstep Select inputs are latched and further changes to the inputs are ignore d is good thermal flow, otherwise hot spots may occur in until the next rising edge of the Step Clock input. the MDM40001 which will reduce the effect
19 #L010068 #L010068 TORQUE/SPEED CURVES TORQUE/SPEED CURVES
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