Actuator Subsystems – Stop Category 1 via a Safety Relay and PowerFlex 755 Drive with Hardwired Safe Torque-off
Brand: Rockwell Automation · SKU: AT146A · MPN: AT146A · Category: Components
This is a Rockwell Automation publication (SAFETY-AT146A-EN-P, August 2015) detailing the functional safety description and setup for implementing a Stop Category 1 safety function. The system involves a Guardmaster dual-input safety relay, a Guardmaster multifunction-delay expansion module, and a PowerFlex 755 Drive utilizing Hardwired Safe Torque-off (STO). The safety relay monitors its SWS I/O and output contacts, and upon a safety demand or fault, it deactivates its safety outputs and removes 24V DC from the drive's Stop/Start buttons, causing the drive to perform a normal stop. The expansion module monitors an SWS input, and in this document, it is configured to provide a 100 ms delay upon a non-fault safety demand, or it de-energizes immediately upon an internal or signaled fault. The PowerFlex drive monitors its STO inputs for valid status and faults and monitors its internal safety circuits and outputs.
Specifications
| Safety Rating | CAT. 3, PLe to ISO 13849-1: 2008 |
|---|---|
| Safety Function | Actuator Subsystems – Stop Category 1 via Hardwired STO |
| Publication Date | August 2015 |
| Publication Number | SAFETY-AT146A-EN-P |
| Components Mentioned | Guardmaster Dual-Input Safety Relay, Guardmaster Multifunction-Delay Expansion Module, PowerFlex 755 Drive |
| Communication Protocol | Single Wire Safety (SWS) |
| Warranty | N/A (Document Reference) |
| Weight | N/A |
| Dimensions | N/A |
Key Features
Publication detailing the implementation of a Stop Category 1 safety function using a Guardmaster Safety Relay, Guardmaster Expansion Module, and PowerFlex 755 Drive with Hardwired Safe Torque-off (STO), achieving a safety rating of CAT. 3, PLe.
Frequently Asked Questions
Is this product genuine OEM?
Yes, this Actuator Subsystems – Stop Category 1 via a Safety Relay and PowerFlex 755 Drive with Hardwired Safe Torque-off (AT146A) is 100% genuine Rockwell Automation hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
What warranty is included?
This Actuator Subsystems – Stop Category 1 via a Safety Relay and PowerFlex 755 Drive with Hardwired Safe Torque-off includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
How long does shipping take?
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Can I return this product?
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Is the Actuator Subsystems – Stop Category 1 via a Safety Relay and PowerFlex 755 Drive with Hardwired Safe Torque-off compatible with my system?
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the AT146A.
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