PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-HS3CR PLC-5 Controller is a 3-axis servo controller module designed for industrial automation platforms. It functions as an IMC-123 three-axis servo controller within an Allen-Bradley 1771 I/O rack. The module operates with a rapid servo loop update period of 2 milliseconds per axis. It provides multi-axis position and velocity regulation for connected machinery. Direct backplane communication allows coordinated motion execution alongside the PLC-5 system processor.
This controller module occupies two chassis slots within a standard 1771 I/O assembly. It draws 1.7 amperes of backplane current during standard operations. Field signals terminate through an Allen-Bradley 1771-WA or 1771-WB detachable wiring arm. Command outputs supply plus or minus 10 volts DC analog signals directly to drive equipment. Differential feedback inputs support maximum frequencies up to 250 kilohertz. The module also features a pulse capture time from 50 to 9.999 microseconds.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Module Type | 3 Axis Servo Controller Module |
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| Controlled Axes | 3 axes |
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| Chassis Slot Requirement | 2 slots per ES |
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| Backplane Current Draw | 1.7 A |
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| Analog Command Outputs | +/- 10 V DC |
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| Max Input Frequency | 250 kHz differential input |
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| Module Update Period | 2 ms/axis |
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| Pulse Capture Time | 50 to 9.999 microseconds |
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| Compatible Wiring Arms | 1771-WA, 1771-WB |
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| Fuse Voltage Rating | 120 V |
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| Compatible External Power Supply | 1771-PS7 (120 V AC, 1 A) |
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TECHNICAL INFORMATION
Features
- Controls up to three independent servo axes with dedicated feedback loops.
- Updates servo position loops at a rate of 2 milliseconds per axis.
- Generates plus or minus 10 volt DC analog command outputs for drives.
- Accepts differential feedback signals at input frequencies up to 250 kilohertz.
- Provides pulse capture response times ranging from 50 to 9.999 microseconds.
TECHNICAL INFORMATION
Applications
- Closed-loop 3-axis servo motion control within Allen-Bradley PLC-5 automation systems.
TECHNICAL INFORMATION
Connections / Interfaces
- Front panel connectors include dedicated power and RS-232 communication ports.
- Field connections terminate through Allen-Bradley 1771-WA or 1771-WB wiring arms.
- Drive command interfaces provide bipolar plus or minus 10 volt DC analog signals.
- Differential encoder feedback inputs accept pulse frequencies up to 250 kilohertz.
TECHNICAL INFORMATION
Installation Guidelines
- The module occupies two adjacent slots in any compatible 1771 I/O chassis.
- Turn off chassis and backplane power before inserting or removing the module.
- Pre-wire field signals using the detachable 1771-WA or 1771-WB wiring arm.
TECHNICAL INFORMATION
Compatibility
- Operates within Allen-Bradley PLC-5 programmable logic controller systems.
- Mounts into standard Allen-Bradley 1771 series I/O chassis.
- Connects with 1771-WA and 1771-WB detachable wiring arms.
- Uses the Allen-Bradley 1771-PS7 power supply module rated at 120 V AC and 1 A.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSOperates within Allen-Bradley PLC-5 programmable logic controller systems. Mounts into standard Allen-Bradley 1771 series I/O chassis. Connects with 1771-WA and 1771-WB detachable wiring arms. Uses the Allen-Bradley 1771-PS7 power supply module rated at 120 V AC and 1 A.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the primary function of the Allen-Bradley 1771-HS3CR module?
The 1771-HS3CR is a 3-axis servo controller module for PLC-5 systems. It provides closed-loop motion control using analog command outputs and differential encoder feedback.
Which wiring arms are compatible with the 1771-HS3CR controller?
The module is compatible with Allen-Bradley 1771-WA and 1771-WB wiring arms. These arms allow module replacement without disconnecting field wiring.
What is the market reference price for the 1771-HS3CR?
Observed market reference pricing for a refurbished 1771-HS3CR is approximately 289 USD. These figures represent indicative market reference pricing only and are not a final quotation.
