- 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.
440N-G02149
This safety relay switch includes a magnetic actuator with a sensing distance of 15 millimeters. It has an output configuration consisting of 2 normally closed (NC) contacts for safety and 1 normally
In Stock Ships Today
440N-N15023
This device features a sealed plastic housing rated IP67, ensuring effective protection against dust and moisture. With a maximum switching current of 2A and a switching voltage limit of 250 V, this i
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440N-N15041
This safety interlock switch supports electro-magnetic coding for enhanced functionality. It has a maximum voltage rating of 250V and a current capacity of 2 Amps. With an IP65 enclosure rating, it wi
In Stock Ships Today
440N-S32017
Featuring one normally closed (NC) contact and one normally open (NO) contact, this device is suitable for diverse applications that require conditional safety management. It has a cable length of 10
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440N-S32021
This non-contact interlock switch operates with two normally closed safety contacts. With a maximum AC switching capacity of 2.0 amps and a DC capability of 1.0 amp, the device handles a variety of ap
Available
440N-S32033
Featuring a cable connection with a length of 10 meters, this safety relay includes one NC auxiliary contact and operates effectively within temperature settings from -10 °C to 55 °C. The lightweight
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440N-Z18PT
This actuator has an 18 mm diameter and is compatible with cylindrical SensaGuard sensors of the same size. It ensures a reliable sensing distance of up to 15 mm. The mounting options include threaded
Available
440N-Z21S16A
This non-contact switch has a sensing distance of 15 mm and operates at 24 VDC. Designed from polycarbonate material, it offers protection against short circuits, overloads, reverse polarity, and over
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440N-Z21S16H
This non-contact switch operates with solid-state technology and includes one normally open (NO) contact and one normally closed (NC) contact. It has an 8-pin DC quick disconnect connector for efficie
Available
440N-Z21S17H
This safety switch offers a current rating of 200 milliamperes across all its outputs, ensuring reliable operation during use. It is capable of sensing with a repeatable accuracy of 10% over its sensi
In Stock Ships Today
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