Norstat now offers the AD SRT Safety Interface, a PL e safety interface designed specifically for two hand control applications.
The AD SRT Safety Interface from ReeR is a Type III C safety relay designed to monitor the simultaneity between two inputs in less than 0.5 sec. This relay has input with 3 or 4 contacts for two hand control units as well as guided contact safety relays. Standard relay outputs are 2NO + 1NC where each NO output line is interrupted twice by the two relays. Each relay is also equipped with EDM feedback input for external contactors monitoring and can be used up to Cat. 4, PL e.
The AD SRT Safety Interface utilizes LED indicators for status and diagnostics, power supply, and channels 1 and 2. It has a response time of < 30ms, can operate in temperatures of -25° C to +55° C with a protection rating of IP 40 for the housing and IP 20 for the terminal blocks and attaches via DIN rail mounting.