X20 system modules • Motor controllers • X20SM1426
1976
X20 system User's Manual 3.10
4.25.6 X20SM1426
4.25.6.1 General information
The stepper motor module is used to control stepper motors with a rated voltage of 24 VDC at a motor current
up to 1 A (1.2 A peak). Additionally, this module has four digital inputs that can be used as limit switches or as
encoder inputs.
By individually adjusting the coil currents, the motor is only operated with the current it actually needs. This simpli-
fies the selection of the available motors and prevents unnecessary heating. Because the latter reduces energy
consumption and thermal load, the effects are positive on the lifespan of the complete system. Complete flexibility
is achieved by using the values for holding current, maximum current and rated current, which are completely in-
dependent of each other. The current for the microsteps is automatically adjusted to the configured current values.
The automatic motor identification system is an enormous help during standstills. The stepper motor modules can
identify the connected motors using their coil characteristics and generate feedback in the form of an analog value.
This makes it possible to detect not only wiring errors, but also incorrect motor types being used mistakenly. A stall
detection mechanism is integrated to analyze the motor load. The stall is recognized using a configurable threshold.
This allows an overload or motor standstill to be detected precisely in many different types of applications.
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1 stepper motor, 24 VDC, 1 A (1.2 A peak)
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Resolution of current values at 1%
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Maximum, rated and holding current configured independent of each other
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38.5 kHz PWM frequency
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Integrated motor detection
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256 micro-steps
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Stall detection
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Complete integration in Automation Studio and CNC applications
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4 inputs, 24 VDC, can be configured as ABR
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Ramp function model based on the CANopen communication profile DS402
4.25.6.2 Order data
Model number
Short description
Figure
Motor controllers
X20SM1426
X20 stepper motor module, 1 motor connection, 1 A continuous
current, 1.2 A peak current, 4 digital inputs 24 VDC, sink, can be
configured as incremental encoder
Required accessories
Bus modules
X20BM11
Bus module, 24 VDC keyed, internal I/O supply continuous
Terminal blocks
X20TB12
X20 terminal block, 12-pin, 24 VDC keyed
Table 707: X20SM1426 - Order data
Summary of Contents for X20 System
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