The Allen-Bradley 1746-HSTP1 is a stepper controller module. A single-slotted module capable of operating a wide variety of SLC 500 series processors. With a differential encoder motion that is programmable for more than 8,000,000 counts of absolute position. The 1746-HSTP1’s feedback hardware adapts up to 250 kHz of any frequencies. It can provide 250 kHz pulse train output for micro-stepping applications. It uses loopback diagnostics and differential incremental encoder feedback devices. The 1746-HSTP1 provides a differential feedback that interfaces directly to +5 or +15 V encoders. The module has a 5" x 2" x 6" (13 cm x 5 cm x 15 cm) estimated dimension and weighs 15 oz (0.43 kg) approximately. Programmable modes of operation reduce the need for setting a DIP switch.

The 1746-HSTP1 module has a 200 mA back-plane current at 5 volts and 90 mA at 24 volts. It has a 5V DC differential encoder or 12-24V DC single-ended auxiliary inputs. It provides a digital output for the translator with a 4 ms module update time. The controller module has a 7 - 30 mA at 5V DV pulse train switching. An acceleration of 2 - 2500 pulses per second2 trapezoidal velocity profile. The thermal dissipation of the controller reaches a 1.5 Watts for both minimum and maximum. The application interfaces hold a stepper motor driver with a speed range of 1 - 250,000 pulses per second.

The 1746-HSTP1 module’s storage temperature is -40-85 Deg. Celsius and 0-60 Deg. Celsius operating/inlet air temperature. An altitude that is up to 200 meters with a relative humidity 5 - 95% non-condensing.

The Allen-Bradley 1746-HSTP1 is an intelligent module that is compatible with the SLC 500 controller platform. This module is a Stepper Control Module, used with encoder inputs to provide accurate control of stepper motors in motion and positioning control.

This particular module is compatible with Allen-Bradley fixed style SLC product with Two (2) Slot expansion and modular style processors such as SLC 5/01, SLC 5/02, SLC 5/03, SLC 5/04 and SLC 5/05 controllers. Via the 1746-ASB module, this intelligent module may also be used in larger Programmable Logic Controller (PLC) systems.

The integrated stepper motor controller’s absolute positioning count may reach over +/- 8,000,000 counts at pulse train velocities of 250 kHz. This module does not implement a closed loop control instead, the encoder feedback is used to verify movement of the axis to the correct position based on the user program.

This stepper controller module interface directly to encoders with differential feedback with +5 or +15V signal. It is also compatible with transistors with differential input translators, single-ended TTL and interface for opto-couplers.

This module does not include DIP switches for setting and configuration.

The module provides quick operational diagnostics through its embedded LED indicators that provide feedback regarding programming errors, normal and abnormal operation and a faulted system. This module also has built-in loop diagnostics that monitors the pulse train commands provides to the module’s translator.