- 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 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-AD1
This model incorporates an alphanumeric display capable of showing up to 16 characters. It is designed for installation at the front of the main chassis and includes an industrial terminal port for pe
Available
1775-AD2
This expansion chassis door can function effectively in operational settings where temperatures range from 0 to 60 degrees Celsius. It supports humidity levels between 5 to 95%, provided condensation
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1775-CBA
This backup cable operates effectively between a temperature range of 0 °C to 40 °C and maintains performance within a humidity level of up to 80% non-condensing. For storage, it can withstand similar
In Stock Ships Today
1775-CM
This assembly supports up to 64 nodes connected on a Data Highway network and is mounted securely within a PLC-3 chassis. The logic support allows for nested and looping processes, optimizing performa
In Stock Ships Today
1775-CX
The 1775-CX expansion cable by Allen Bradley is used for PLC-3 programmable controllers. It is made for rack/chassis and it is made according to industrial standards. The cable comes in a set of 4 and
Available
1775-CX-EA
With point-to-point connection capabilities, this expansion cable operates effectively within a temperature range from 0 to 40 degrees Celsius. It is compatible with a humidity level of up to 80% RH,
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1775-GA
This communication module provides four local channels and two remote channels for effective communication. It includes a mass storage interface and is capable of interfacing with the 1770-T4 programm
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1775-KA
This module enables serial network communication through its RS-232-C and Data Highway ports. Power consumption is rated at 3.5 watts with operational capability at both 50 and 60 Hz. Integration with
In Stock Ships Today
1775-L1
This processor module is compatible with PLC-3 chassis and utilizes the Data Highway (DH) communication interface for seamless connectivity. The module interfaces with I/O through PLC-3 I/O modules an
Available
1775-L1B55B
This processor module operates on the chassis backplane, drawing 9.4 Amps at 5V DC and 40 mA at 24V DC. It includes an I/O image table and LED indicators for system status. The module supports diagnos
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