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Drives
GCD MINI
Stepper Motor Power Stage with Indexer
and Plain Text Display
Technical Information
Ministep stepper motor power stage for
bipolar control of two-phase stepper
motors
Indexer for exact positioning
PLC mode or online mode
Parametrization and configuration in
the online mode with IPCOMM
8 Digital inputs, 4 digital outputs for
PLC mode
2 Limit switches
Input logic 24 V
Phase currents from 0.14 to 9 APEAK
Power supply: 50 VAC or 70 VDC
Admissible range: 17 to 50 VAC
or 24 to 70 VDC
Step resolution up to 1/8 step
Plain text display 2 x 8 digits
Compact design 70 x 150 x 127 mm
User-friendly screw connectors
Fully EMC compliant metal housing
DIN rail or wall mounting
Prepared for mounting an external
24 V fan at the bottom of the housing
IPCOMM communication software
included in delivery
Plain Text Display
GCD MINI is an ’intelligent’ stepper motor power
stage with indexer for two-phase stepper
motors up to 9 APEAK. Absolute and relative
motion commands can be executed from a
PLC or online on the PC.
PLC Mode
The GCD power stage receives motion
commands from a PLC via the digital inputs
and outputs.
Online Mode
The GCD receives motion commands from a
PC via RS 485 or RS 232 interface.
Indexer
The embedded indexer allows a processor
controlled selection of the best step resolution.
The step resolution is automatically adapted to
the frequency:
1/8 1/4 1/2 full step 1/2 1/4 1/8.
Ministep guarantees high resonance
suppression during a slow run. Full step
enables the complete motor power at high
frequencies.
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The GCD Stepper Motor Drive
A two-line plain text display and three menu
buttons are sufficient for operating the GCD.
The parameters run, stop and boost current
can be programmed and changed in the
SETUP menu at any time.
The TEST menu allows to drive the motor for
test with the programmed parameters, to set
the outputs and to display the input states.
Active parameters are displayed during motor
running: phase current, voltage or power stage
temperature (optional).
The plain text display changes in case of an
error: short circuit, under voltage or over
temperature.
Fig. 1
Dimensions in mm Fig. 2
Front View / Dimensions
Stepper motor connector
PE connection
Space required
for connectors and cables
about 30 mm
Limit switches
RS 485 or RS 232
30
Plain text display
Operator’s control menu
EMC clamps to connect
the cable shields
I / O
AC or DC
Power supply connector
150
GCD / 09-1 GB
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