- 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
Free UPS Ground on All Orders!
+1 (919) 205-4392
Allen Bradley 1774 PLCs and Modules Repair
We offer extensive repairs for your 1774 PLCs and Modules. We keep many spare parts in stock so that we can repair your 1774 PLCs and Modules 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.
Learn more
Hardware issues & error codes we repair
We repair all of the following hardware issues and error codes with your 1774 PLCs and Modules 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 1774 PLCs and Modules Repairs
Browse our catalog of repairable 1774 PLCs and Modules parts to get a quote.
1774-C12
This module is part of the 1774 series and features dual ports for enhanced connectivity. It operates effectively in a temperature range of 0°C to 40°C and can withstand humidity levels of up to 80% (
Call
1774-CI2
The 1774-CI2 offers two communication ports and supports both half-duplex and full-duplex protocols. It has a 25-pin configuration and utilizes single-ended input for signal processing. Local signalin
Available
1774-KA
This adapter is designed to fit within a 1771 I/O chassis slot, providing integration with plant-wide Computer Integrated Manufacturing (CIM) systems. It has structured cabling for optimal data transm
In Stock Ships Today
1774-LC2
This PLC processor module supports binary data representation and utilizes backplane buses for communication. It includes built-in I/O sections and can accommodate a variety of I/O modules, including
In Stock Ships Today
1774-LD2
This arithmetic module requires a single slot for installation and is equipped for high-speed I/O processing. It supports internal communication via a dedicated internal bus. The operational temperatu
Available
1774-LP3
This processor module incorporates 256 words of CMOS memory and operates effectively under power requirements of 120/240V AC. Its functionality supports run, test, and program modes. Communication is
In Stock Ships Today
1774-MA
This memory module supports other memory modules and facilitates peer-to-peer messaging and pass-thru protocols. It features a compact 16-bit word size, allowing for efficient data processing. The 177
In Stock Ships Today
1774-P1
This power supply module operates within an input frequency range of 47 to 63 Hz and ensures maximum real input power of 42 W and apparent power of 135 VA. The hold-up time at full load is 20 ms, offe
Call
1774-PD
This module facilitates a distribution point for input/output signals, featuring an open-style enclosure and relying on airflow for cooling. It operates under temperature conditions ranging from 0 °C
Available
1774-RP3
This remote processor module operates in synchronous scanning mode, enabling efficient coordination of local I/O during program execution. It features a maximum temperature threshold of 60°C and opera
Available
Showing 1-10 of
14
results