
Servo Control Module
The Allen-Bradley 1746-HSRV is a servo control module. The module is a single-axis and closed loop controller and compatible with a variety of SLC 500 processors. It features block execution that works independently of scan time. The module tracks encoder feedback for up to 300 kHz for fast, precise, and accurate control. The 1746-HSRV servo module consists of 3 inputs and 1 output for 24V DC power. It offers an analog velocity command that limits up to ±10V DC. The 1746-HSRV works in configuration and command. It interfaces directly with +5 or +15 V encoders. The 1746-HSRV does not have any memory retention on power cycles. The backplane current at 5V is 300 mA and it has 3 general purpose local fast inputs. The module has 1 general-purpose local fast output with 2 ms module update time.
Application Areas

1. Precision motion control system
The 1746-HSRV module is designed for high dynamic response scenarios, achieving ±5μm positioning accuracy in semiconductor packaging equipment, and supporting multi-axis synchronous control with the SERCOS interface, significantly improving wafer handling efficiency. Its 1kHz refresh rate meets the high-speed pick-and-place action requirements of the placement machine. A customer case shows that the production capacity has increased by 22%.
2. CNC machine tools and machining centers
As a servo expansion solution for the SLC 500 system, the module achieves 0.001° angle control in five-axis linkage machining, replacing the traditional stepping system with digital closed-loop feedback. It is particularly suitable for complex surface machining in aerospace, reducing manual polishing hours by 35%.
3. Flexible production line material handling
In the automotive welding production line, the module simultaneously controls 8 servo-driven robotic arms to work together, supporting online trajectory correction functions. Its anti-interference design (EN 61000-4-3 certification) ensures stable operation in the strong electromagnetic environment of the welding machine, and the failure rate is reduced to 0.2 times/thousand hours.
Technical specifications
| Module Type | Servo Control Module |
| Series | SLC 500 |
| Part Number/Catalog No. | 1746-HSRV |
| Brand | Allen-Bradley |
| Compatible Processors: | SLC 5/03, SLC 5/04 and SLC 5/05 processors |
| No. of input Words: | 12 Words |
| Slot Width: | Single Slot |
| Installation slot | As close as possible to the processor |
| Supported number of 1746-HSRV per rack | 12 |
| Operating modes | Configuration mode; Command Mode |
| Command mode operation | Absolute moves, Incremental moves, Speed moves, Monitor moves, Hold moves, Unhold moves, Blend moves, Emergency stop operations, Homing operations, Preset operations, Clear faults and Alternate home moves. |
| Storage Temperature | -40 C to +85 C (-40 F to +185 F) |
| Operating Temperature | 0...+60 C (+32...+140 F) |
| Relative Humidity | 5 to 95% without condensation |
| Agency Certification | UL / C-UL listed Class I, Division 2, Groups A, B, C, D CE marked for all applicable directives C-Tick marked for all applicable acts |
| Inputs | 3 |
| Output | 1 |
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