- 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-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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1775-L2
This module supports an instruction set categorized as Level 2. It features four AMD 2903 bit slice microprocessors and requires a current of 9 Amperes at 5 Volts DC. Mounting options include rack or
In Stock Ships Today
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