Allen-Bradley 1771-HS3A IMC-123 Allen-Bradley 3 Axis Servo Controller

Product Description

 

The 1771-HS3A IMC 120 Servo Controller Module by is a 3-axis servo controller module specially designed for use with the 1771 I/O chassis series and it consists of a memory module, a power module, an encoder module, a resolver, and an optional Hand-Held pendant. The module has similar specifications to most IMC 120 servo controllers with an additional 3-axis capability.
The 1771-HS3A uses a power supply module (1771-PS7) which supplies 120-240V AC at 1A and 2A, using the 9-pin connected cable (1771-CAS) connected the controller's power connector and it uses the 1771-HMA 96 KB battery-backed memory cartridges which store the servo controller's AMP parameters and MML downloaded programs.

Technical specifications

 

Manufacturer	Rockwell Automation
Brand	Allen-Bradley
Part Number/Catalog No.	1771-HS3A
Module Type	Servo Controller Module
Fuse Voltage	120 Volts
Max Input Frequency	250 Kilohertz Differential Input
Outputs	+/- 10 Volt DC Analog Command
Slots	2 Slots Per ES
Module Update Period	2 ms/axis
Backplane Current	1.7 Amperes
Wiring Arm	1771-WA
Pulse Capture Time	50-9.999 Microseconds
Dimensions	3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm)

1. Processor control

• Supports direct control of PLC-5 series processors to achieve high-speed data exchange
• Hardware-level data processing acceleration, scan cycle as low as 0.5ms
• Compatible with 1771 series backplane bus architecture

2. Modbus master/slave function

• Dual protocol stack support (Modbus RTU/TCP)
• Configurable as a multi-port master (up to 32 slave connections)
• Supports custom function code extension
• Baud rate adaptation (1200~115200bps)

3. I/O mapping and scanning

• 1024-point data mapping capability (dynamic memory allocation)
• Supports asynchronous scanning mode (event-triggered data update)
• Intelligent data preprocessing (filtering/scaling conversion)

4. Programming and debugging

• Integrated RSLogix 5 dedicated configuration tool
• Real-time communication message monitoring function
• Support online channel testing and diagnosis

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