- 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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+1 (919) 205-4392
Allen Bradley PLC 3 Repair
We offer extensive repairs for your PLC 3. We keep many spare parts in stock so that we can repair your PLC 3 as efficiently and effectively as possible. Our standard repair lead time is 2-4 weeks. However, we can often repair your unit much faster if necessary. We can repair most issues with your PLC 3 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 PLC 3 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 PLC 3 Repairs
Browse our catalog of repairable PLC 3 parts to get a quote.
1775-MEF
Rated for operation within a DC voltage of 5V and 15V, the 1775-MEF has current ratings of 1.9 amps at 5V DC and 0.15 amps at 15V DC. Its temperature range for operation is between 0 and 60 degrees Ce
In Stock Ships Today
1775-MEFA
Compatible with the PLC-3 Processor chassis, the 1775-MEFA utilizes a lithium battery to maintain its functions and occupies a single slot within the system. This memory module functions efficiently a
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1775-MR4
Engineered for EBUS compatibility, this memory module includes four 50-pin connectors and allows for local or remote programming. It supports real-time diagnostics and is compatible with industrial ne
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1775-MR8
This memory module provides 32K of storage with CMOS RAM technology. It operates at a power draw of 3.5 A at +5 VDC. The module is designed to work in temperatures up to 60°C, with a battery-backup fe
In Stock Ships Today
1775-MS4
This memory module supports a single slot configuration and is compatible with the PLC-3 backplane for seamless integration. It features ECC (Error Correction Code) for data protection. With an access
In Stock Ships Today
1775-MS8
This memory module is equipped with LED indicators for monitoring status. It supports a message buffer and includes both integer and status data areas within its data table. Error correction capabilit
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1775-MSA
This memory module offers 64K words of storage capacity and utilizes error-correcting RAM, ensuring data integrity with double-bit error detection and single-bit error correction. Operation is powered
In Stock Ships Today
1775-MSD
This memory module operates with a maximum backplane current of 3.5 A at +5 VDC. It is designed to function within a temperature range of 0° to 60°C, while storage conditions can go up to 85°C. Furthe
Available
1775-MX
This module supports installation in a single slot of the PLC-3 and can be mounted via panel or rack. Its operating temperature can reach 60°C, with a storage capability up to 85°C. Relative humidity
Available
1775-MZ
This module serves as a necessary accessory and is compatible with both 1775-MCM1 and 1775-MCM2 modules, ensuring flexibility in applications. It operates within temperatures ranging from 0 to 40 degr
In Stock Ships Tomorrow
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