Product Summary
The 1771-HS3A servo controller module delivers precise 3-axis motion control for PLC 5 systems. It integrates seamlessly into a 1771 I/O chassis. This module directly manages solenoids, indicators, and AC motor starters. It requires a 1771-PS7 power supply for reliable operation.
Expert Technical Evaluation & Performance Review
Precision Motion Control Architecture
The 1771-HS3A module provides a dedicated servo controller for three independent axes. It processes encoder feedback at a maximum input frequency of 250 Kilohertz differential input. This high frequency enables precise velocity and position tracking. The module outputs a +/- 10 Volt DC analog command signal. This signal directly drives servo drives for accurate motion.
Feedback and Signal Processing
This module uses both resolver and encoder feedback systems. The resolver feedback generates Sine and Cosine signals for rotor position. The encoder feedback provides 10V DC isolated outputs for speed control. It accepts 250 KHz differential and 20 KHz single-ended inputs. The pulse capture time ranges from 50 to 9.999 microseconds. This allows for precise event timing in complex applications.
Environmental and Operational Tolerances
The 1771-HS3A operates reliably in demanding industrial environments. It functions within a temperature range of 0 to 60 degrees Celsius. It withstands ambient relative humidity from 5 to 95 percent without condensation. The module draws a backplane current of 1.7 Amperes. It holds certifications including c-UL, C-TICK, and CE for global use.
System Integration and Memory
The module uses a 1771-HMA 96 KB battery-backed memory cartridge. This cartridge stores AMP parameters and MML programs. It connects via an RS-232 port to T45 and T50 ODS terminals. An optional Hand-Held pendant allows operators to modify system variables. The update period is a fast 2 ms per axis for responsive control.
Installation and Configuration Guide
Chassis Mounting and Power
Install the 1771-HS3A into any two adjacent slots of a 1771 I/O chassis. It requires a 1771-PS7 power supply module for operation. This supply provides 120-240V AC at 1A and 2A. Use the 1771-CAS 9-pin cable to connect the power connector. The module dimensions are 3.5 x 6.5 x 2.0 inches.
Wiring and Connections
Connect the 1771-WA wiring arm for field wiring. Wire the +/- 10 Volt DC analog command outputs to your servo drives. Connect the encoder feedback using differential wiring for high noise immunity. Use the resolver excitation module to produce Sine and Cosine signals for the resolver stator.
Programming and Parameterization
Download MML programs and AMP parameters to the 1771-HMA memory cartridge. Use the RS-232 connection to interface with the ODS terminal. Modify system variables and parameter values using the Hand-Held pendant. Monitor the module’s status using its built-in LED indicators.
Logistics & Standard Packaging Details
- One Allen-Bradley 1771-HS3A Servo Controller Module
- One 1771-WA Wiring Arm
- Installation and user manual
- Express delivery shipping is available via FedEx, UPS, and DHL.
