2TLC010073M0201 Rev.G
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Product description
3.1
Sentry safety relays
Sentry safety relays provide safe stop and start of monitored devices to prevent errors. The
following safety device types are applicable for the Sentry safety relays:
• 1 channel safety device.
• 2 channel safety device with equivalent contacts.
• 2 channel safety device with antivalent contacts.
• Expansion of safety modules.
• Pressure sensitive safety device (short-circuit detection).
• Two-hand safety device.
• OSSD safety device.
Examples of devices for connection to the Sentry safety relays:
• Light beams.
• Light curtains.
• Three position safety device.
• Safety interlock switches.
• Emergency stop buttons.
• Bumpers, contact edges and safety mats.
3.2
Sentry product range
The Sentry product range has the following groups of safety relays:
BSR (Basic function Safety Relay) group
The BSR group include BSR10, BSR11 and BSR23. The safety relays have basic monitoring
functions for 1- and 2-channel safety devices. The safety relay can be used as an expansion of
other safety modules.
SSR (Single function Safety Relay) group
The SSR group includes SSR10, SSR10M, SSR20, SSR20M, SSR32 and SSR42. The safety relays
have single safety device functions and limited configuration possibilities for automatic and
manual reset. SSR32 and SSR42 have a timer function.
TSR (Timer function Safety Relay) group
The TSR group includes TSR10, TSR20 and TSR20M. The safety relays have timer functions and
configuration possibilities. TSR10 is fully configurable with preset selection possibilities and
password protection.
USR (Universal function Safety Relay) group
The USR group include USR10 and USR22. The safety relays have multiple functionalities for
monitoring safety device including timer functions. The USR group is fully configurable with
preset selection possibilities and password protection.
