The Sentry series from ABB covers the entire spectrum of safety relays, from basic models for simple safety applications or for multiplying safety outputs, to highly flexible universal models with extremely precise timer functions. The series therefore covers all requirements for safety applications. Manual or automatic reset can be easily selected using a switch on the front of the relay. The new multi-reset function enables up to 10 Sentry safety relays to be reset with just one reset button. The basic BSR models are suitable for emergency stop shutdowns or for expanding safety outputs, for example. The single-function SSR models are suitable for applications such as monitoring contacts and OSSD signals or for two-hand switching. The TSR safety timers are characterized by their very high accuracy of better than 1%, and the USR universal models for all common safety applications also offer display and configuration options.
Property | Value |
Safety type according to IEC 61496-1: | without |
Number of outputs, signaling function, delayed, contact-based: | 1 |
Suitable for monitoring position switches: | yes |
Suitable for monitoring proximity switches: | yes |
Evaluation of inputs: | single and dual channel |
With TÜV approval: | yes |
Number of outputs, safety-related, delayed, contact-based: | 3 |
Voltage type for Actuation: | DC |
Suitable for monitoring magnetic switches: | yes |
With UL approval: | yes |
With muting function: | no |
Rail mounting possible: | yes |
Performance level according to EN ISO 13849-1: | Level e |
Category according to EN 954-1: | 4 |
Design: | other |
Design of the electrical connection: | screw connection |
Suitable for monitoring optoelectronic protective devices: | yes |
Stop category according to IEC 60204: | 1 |
Suitable for monitoring EMERGENCY STOP circuits: | yes |
Rated control supply voltage Us at DC: | 24.00 V |
Suitable for monitoring valves: | yes |
Suitable for monitoring tactile sensors: | no |
With approval for BG BIA: | no |
Width: | 22.5 mm |
Height: | 120 mm |
Depth: | 120 mm |
With removable terminals: | yes |
With start input: | no |
With feedback loop: | yes |
Off delay: | 0.5 to 1.5 s |
SIL according to IEC 61508: | without |