- 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-P1
Engineered for modular installation, this power supply module delivers an output current of 6/3 A. Key features include built-in surge protection and environmentally friendly biodegradable materials.
Available
1775-P2
This power supply module provides DC output protection against overcurrent and short-circuit conditions. The module has three DC outputs and is capable of delivering a maximum current of 28 A. It is c
Available
1775-P3
This power supply module can operate with input voltages of 115 V AC or 230 V AC. The range for 115 V AC is from 97 to 132 V AC, whereas 230 V AC covers 194 to 264 V AC. Input current draw is rated at
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1775-RM
This module supports two channels and operates with a backplane current of 1.5 A. It functions effectively in ambient temperatures ranging from 0°C to 60°C. When stored, it can withstand temperatures
In Stock Ships Today
1775-S4A
This I/O scanner programmer interface supports four input and four output communication ports and uses RA-232 C communication standards. It functions optimally within temperatures between 0 °C and 40
In Stock Ships Today
1775-S4AA
This I/O programmer interface is compatible with PLC 3 controller systems. It has a temperature operating range from 0 to 40 degrees Celsius, with storage limits of 0 to 50 degrees Celsius. The specif
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1775-S4AB
This device operates within a temperature range from 0 °C to 60 °C, with storage capabilities extending from -40 °C to 85 °C. It provides a DB-25 female D-Sub connector for communication and maintains
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1775-S4B
This module features an RS-232-C serial interface and utilizes peer-to-peer and I/O scanning communication protocols. The nominal scan time varies from 5.5 to 6.5 milliseconds, allowing for efficient
In Stock Ships Today
1775-S4BA
Designed for reliable operation, this unit achieves a nominal scan time of between 5.5 and 6.5 milliseconds. It includes four status LEDs to indicate channel performance and two self-test LEDs for dia
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1775-S4BB
This I/O scanner module provides four separate high-speed communication channels, supporting 16 I/O chassis for each channel. It has a nominal scan time ranging from 5.5 ms to 6.5 ms and features an R
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