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Safety Relays

Safety Relays check and monitor a safety system and either allow the machine to start or execute commands to stop the machine. Single-function safety relays are the most economical solution for smaller machines where a dedicated logic device is needed to complete the safety function. Modular and configurable monitoring safety relays are preferred where a large and diverse number of safeguarding devices and minimal zone control are required.

Single-Function Relays

Single-Function Safety Relays

The Guardmaster® MSR100 Single Function Safety Relays support a wide variety of input devices and output configurations. Ideal for relatively small safety applications and single zone control, MSR100 relays are compact packages with removable terminals. These relays are also available in electromechanical versions, or solid-state models for applications involving high cycle rates. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past.

Single-Function Relays with Delayed Outputs

Single-Function Safety Relays with Delayed Outputs

Safety Relays with Delayed Outputs are used in applications where power must be maintained for a fixed duration after an input signal is received. For example, driving a switch to maintain a guard door in the locked position for a fixed duration after a stop button is pressed.

440C-CR30 Software Configurable Relay

Guardmaster 440C-CR30 Software Configurable Safety Relay

The Guardmaster® 440C-CR30 Software Configurable Safety Relay is flexible, cost-effective, and easy to use. This relay is ideal for applications requiring as many as nine dual-channel safety circuits and controlling as many as five output zones. You can configure this relay using the Connected Components Workbench™ software.

200 Series Modular Relays

200 Series Modular Safety Relays

The Guardmaster® MSR200 expandable modular relay system supports up to 22 diverse inputs including mats, light curtains and switches. This single-relay system allows safety control of larger, more complex manufacturing equipment. The microprocessor-based design offers diagnostic and communication functionality. This system can deliver output and error status over a fieldbus network to an HMI. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past.

300 Series Configurable Relays

Bulletin 440R 300 Series Configurable Safety Relays

The Guardmaster® MSR300 family of expandable modular safety relays handles larger, more complicated safety systems by allowing connection of multiple input modules to a single base unit. It offers a logic configuration with multiple inputs and the control of multiple independent outputs. The system supports up to 20 diverse inputs and can control up to 3 zones, performing simple function block logic configurations through rotary switch settings as opposed to software configuration. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past. 

Expansion Relays

Bulletin 440R Expansion Relays

Safety Relay Expansion Units are designed to expand the number of outputs available when used with Guardmaster® Safety Relays and retain the same integrity as the base unit.

Expansion Relays with Delayed Outputs

Expansion Relays with Delayed Outputs

Expansion Relays with Delayed Outputs operate as extensions of a master safety relay. The outputs of the expansion relay mimic the outputs of the master. Delayed outputs are used in applications where power must be maintained for a fixed duration after an input signal is received.