Single-Function Safety Relays with Delayed Outputs

The CU4 is an off-delay timing unit that can operate as a stand-alone or as an extension of a host relay. This unit is suited for applications where power must be maintained for a fixed duration after an input signal is received.

The Guardmaster® MSR38D/DP is a microprocessor-based monitoring safety relay with delayed, safety-rated, solid-state outputs. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past.

The Guardmaster® MSR138DP can be connected in three different input wiring configurations: one normally closed, two normally closed, or two OSSD. When connected in the two normally closed fashion, the MSR138DP checks for cross faults across the two inputs. When connected to light curtains, the light curtain must perform the cross-fault detection. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past.

The Guardmaster® MSR178DP is a multi-function time-delay relay for use in safety circuits. This relay has on-delay, off-delay or single-pulse modes. You can use this relay for applications such as delayed unlocking of safety gates, delayed de-energizing of variable speed controlled motors, or jogging (single pulse) in teaching or setup mode. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past.