Allen-Bradley 440R-S13R2 Guardmaster Minotaur MSR127TP Safety Relay

Allen-Bradley 440R-S13R2 Guardmaster Minotaur MSR127TP Safety Relay

Configured for monitoring emergency-stop devices, safety gates, and light curtains, the Allen-Bradley 440R-S13R2 (440R-S13R2 Guardmaster Minotaur MSR127TP Safety Relay) provides direct safety-circuit monitoring through configurable single- or dual-channel inputs and immediate safety contacts.

Hardware Specifications

Safety Input and Output Architecture

The 440R-S13R2 supports one dual-channel universal safety input or two single-channel input configurations. The safety output section provides three normally open immediate contacts for safety circuit switching.

An additional normally closed auxiliary contact provides status signaling separate from the three immediate safety outputs. The device also provides one single-wire safe output according to the supplied product data.

Reset operation can use automatic or manual modes. A terminal jumper determines the configured reset arrangement, while monitored reset functionality is identified in the supplied product data.

Safety Circuit Interface

The relay accepts safety device inputs associated with emergency-stop buttons, safety gates, and light curtains. Input wiring should maintain the selected single-channel or dual-channel circuit configuration throughout the safety loop.

The 24 V supply connection must match the installed device wiring documentation before energization. Removable screw terminals provide direct field wiring access and permit terminal removal during service procedures.

The 35 mm DIN rail mounting arrangement supports installation within standard control-panel assemblies. Housing and terminal ingress ratings differ, therefore the enclosure must provide the required environmental protection for the complete installation.

Frequently Asked Questions

Q: Can the 440R-S13R2 use both single-channel and dual-channel safety inputs?

A: Yes. The supplied specifications identify one dual-channel universal input or two single-channel input configurations.

Q: How is the reset mode configured on this safety relay?

A: Automatic or manual reset operation is selectable through the terminal jumper configuration.

Q: What output contacts are provided?

A: The relay provides three N.O. immediate safety contacts, one N.C. auxiliary contact, and one single-wire safe output.

Field Installation Guidelines

1. Mount the relay securely on a 35 mm DIN rail inside a suitable control enclosure.
2. Verify the supply wiring against the applicable Allen-Bradley installation documentation before energizing the relay.
3. Wire emergency-stop devices, gates, or light curtains according to the selected single-channel or dual-channel circuit arrangement.
4. Keep safety input conductors separated from high-current switching conductors and sources of electromagnetic interference.
5. Terminate cable shields according to the plant grounding design and applicable electrical installation standards.
6. Confirm that removable screw terminals are fully seated and that field conductors remain mechanically secure.
7. Configure the reset jumper only after verifying the required automatic or manual reset function.
8. Check the three N.O. safety contacts and auxiliary N.C. contact during commissioning to confirm correct circuit behavior.
9. Ensure the installed enclosure provides environmental protection beyond the relay housing and terminal ratings where required.
10. Do not alter safety-loop wiring or reset configuration without validating the resulting safety circuit against the approved machine safety design.