- Bad communication ports
- Broken selector/key switches
- Dead batteries/Bad Battery connections
- Solid or Blinking RED OK Status Light
- Solid or Blinking RED RUN Status Light
- Solid or Blinking RED Fault Status Light
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Allen Bradley Guardmaster Safety Relays Repair
We offer extensive repairs for your Guardmaster Safety Relays. We keep many spare parts in stock so that we can repair your Guardmaster Safety Relays as efficiently and effectively as possible. Our standard repair lead time is 3-5 days. However, we can often repair your unit much faster if necessary. We can repair most issues and if for some reason we cannot repair your unit we will do our best to offer a refurbished unit at the repair cost, so that you can get a working unit back as soon as possible!
- 2 Year DO Supply Warranty
- Fast repairs at low costs
- No surprises or up-charges for difficult repairs
- Standard lead time of 2-4 weeks
- Extensive quality control and testing
Get a repair quote
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's
warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Hardware issues & error codes we repair
We repair all of the following hardware issues and error codes with your Guardmaster Safety Relays parts.
- Bad analog inputs or ouptus
- Bad digital input or outputs
- Bad relays (stuck on/off)
- Incorrect voltages on inputs or outputs
- Incorrect current on inputs or outputs
- DF1, DH-485, DH+, Profibus, Remote I/ (RIO) failures and more!
- Intermittent communication
- Solid RED/Blinkging RED communication lights
- Devicenet, Ethernet, ControlNet, RS232 ports.
- Missing CJC Jumpers
- Incorrect readings
- Failed inputs
- Dead power supplies
- Incorrect voltage
- Broken Plastic
- Poor Connections
- Bad Slots
Browse Guardmaster Safety Relays Repairs
Browse our catalog of repairable Guardmaster Safety Relays parts to get a quote.
440R-EM4R2
This expansion module serves as an EM safety relay with a maximum working temperature range of -5 to +55°C. With a power consumption of 3.5 watts, it maintains functionality in humid environments, sup
In Stock Ships Today
440R-EM4R2D
This safety relay has a terminal screw torque rating of 0.4 Nm. It is made from polyamide PA 6.6, ensuring durability. With terminal protection rated at IP20 and enclosure protection at IP40, it opera
In Stock Ships Today
440R-G23216
This safety relay operates on a supply voltage of 24 VAC/DC and has a contact current rating of 3A. It features both monitored manual reset and auto/manual reset options. With a response time of 15 mi
Available
440R-GL2S2T
This safety relay accepts wire sizes between 24 to 14 AWG and has a low power consumption of only 2 W. With an IP40 protection rating and NEMA 1 enclosure classification, it is built for reliability i
In Stock Ships Tomorrow
440R-H23178
This extension module provides dual-channel inputs, allowing for configurations including a single normally closed input and two normally closed inputs with cross-fault monitoring. Built to operate in
Available
440R-J23106
This safety relay is designed with a current rating of 3.0 A, accommodating thermal current up to 4.0 A. It supports both automatic and manual reset functions. The unit also withstands impulse voltage
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440R-K23041
This safety relay operates on a control voltage of 24 V AC/DC and includes two Normally Closed (NC) inputs and one Normally Open (NO) input. It is mountable on a DIN rail and is certified by UL and CS
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440R-M23065
This safety relay operates within a temperature range from 0 °C to 40 °C for both operating and storage conditions. It is designed for mounting on a DIN rail and constructed from plastic and metal mat
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440R-M23066
The 440R-M23066 is a safety relay with safety-rated contacts and relay outputs. It can be reset manually or automatically and utilizes screw clamp connections for secure termination. This device is de
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440R-M23084
The Allen-Bradley/Rockwell Automation 440R-M23084 Guardmaster Single-Function Safety Relay comes with 2 different input options that have 1 N.C. contact, 2 N.C. contacts, or a light curtain. It operat
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