- 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-C23139
This safety relay features three normally open contacts for safety outputs and two normally closed and two PNP solid-state outputs for auxiliary functions. It operates with a 4 W power consumption and
In Stock Ships Today
440R-D22R2
This relay supports two dual-channel universal safety inputs, ensuring comprehensive monitoring. The device has an enclosure rated at IP40 and offers terminal protection at IP20. With safety outputs c
In Stock Ships Today
440R-D23023
With a wide operating temperature range of 32 to 104 degrees Fahrenheit, the relay is designed for versatile installation environments. It supports a maximum relative humidity of 80%, ensuring functio
Available
440R-D23166
Designed for safe operation, this relay has an output configuration of two safety outputs. It functions within temperature limits ranging from -5 °C to 55 °C and supports a storage temperature range f
Available
440R-D23171
This safety relay operates with a maximum input resistance of 40 ohms and has a rapid input response time of 20 milliseconds. It is compliant with conductor sizes ranging from 24 to 12 AWG and boasts
In Stock Ships Today
440R-DG2R2T
Designed for versatility, the 440R-DG2R2T accommodates two GuardLink safety inputs, OSSD, and normally closed inputs. It provides two normally open safety outputs and requires a power consumption of 3
Available
440R-E21357
The GuardMaster 440R-E21357 safety relay supports an output switching current of 4 A in AC and 2 A in DC with a rated voltage of 24 V DC. It has a housing width of 100 mm and does not include a reset
In Stock Ships Today
440R-E21358
This safety relay module can accept 1 NC or 2 NC input formats and is equipped with six normally open safety contacts and one normally closed monitor contact. It is rated for low-current output endura
In Stock Ships Today
440R-E23097
This safety relay offers four normally open (NO) safety outputs and two normally closed (NC) auxiliary outputs. With a compact housing width of 22.5 mm, it supports Category 4 ratings. The device oper
In Stock Ships Today
440R-E23097-R
This safety relay is designed to work with a control voltage between 24 V AC and DC, providing a power consumption of 1.5 W. It includes 2 normally closed (NC) contacts and 4 normally open (NO) contac
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