- 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 ControlLogix Repair
We offer extensive repairs for your ControlLogix. We keep many spare parts in stock so that we can repair your ControlLogix 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 ControlLogix 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 ControlLogix 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 ControlLogix Repairs
Browse our catalog of repairable ControlLogix parts to get a quote.
1756-L83ESK
This controller boasts 10 MB of RAM and 5 MB dedicated to safety memory. It supports a maximum of 250 Ethernet nodes and offers redundancy features to enhance reliability. With the capacity to manage
In Stock Ships Today
1756-L83EXT
The Allen-Bradley 1756-L83EXT ControlLogix-XT Controller is a manufactured as part of the ControlLogix-XT 5580 controllers. The device comes with 10 MB of user memory along with an optional 2 GB of op
In Stock Ships Today
1756-L84E
ControlLogix Controller, N/A I-O Memory, 128000 Maximum I-O, 6.2 Watts
In Stock Ships Today
1756-L84E-NSE
The Allen-Bradley 1756-L84E-NSE Controller is a ControlLogix controller manufactured as part of the ControlLogix 5580 Controller series. It comes with a user memory capacity of 3 MB and with 2 GB nonv
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1756-L84EK
ControlLogix Controller, N/A I-O Memory, 128000 Maximum I-O, 6.2 Watts, Conformal Coat
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1756-L84EP
The 1756-L84EP module is a controller module for Allen-Bradley ControlLogix 5580 systems. It comes with 20 megabytes of user memory.
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1756-L84ES
This controller supports a maximum of 31 standard tasks and 1 dedicated safety task, enabling effective task management. It can accommodate 1000 programs per task and offers no limit on local I/O even
In Stock Ships Today
1756-L84EXT
The Allen-Bradley 1756-L84EXT controller is a ControlLogix-XT controller. It is manufactured as a member of the ControlLogix-XT 5580 controllers series and it has a user memory of 20 MB.
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1756-L85E
With support for various communication protocols, including Ethernet, DeviceNet, ControlNet, and Remote I/O, this controller is equipped for diverse networking needs. The 1756-L85E features a USB port
In Stock Ships Today
1756-L85E-NSE
Allen-Bradley manufactures the 1756-L85E-NSE ControlLogix controller as part of the ControlLogix 5580 controller series. It features a user memory capacity of 3 MB.
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About ControlLogix
The ControlLogix series drives offer control platforms for high-performance industrial systems. The Allen-Bradley manufactured ControlLogix series drives can perform sequential, process, or motion control in any combinations. These drives create a high-performance, multiprocessing platform. They use cost-effective distributed control systems for different process applications. The drives are cost-competitive packages and they come with several safety features. A ControlLogix system consists of a standalone controller and input/output modules inside a chassis. The body has a conformal coating which helps to extend the life of the product in harsh industrial environments. The ControlLogix drives can withstand temperature ranges from 0 and 60 degrees Celsius.
The ControlLogix architecture provides a wide range of input and output modules for many applications like high-speed digital process control. The devices in this series use the HART smart instrumentation features. This is an open protocol that is designed to connect analog devices. These drives come with removable terminal blocks which provide interconnection between the plant wiring. For internal connectivity, the devices use Ethernet/IP, DeviceNet, ControlNet, SynchLink, Data Highway Plus, and remote input/output modules. The ControlLogix series drives are available in different variants that come with different outputs, different operating voltages, operating voltage ranges, maximum output currents, power dissipations, input types, and input resolution. The ControlLogix drives are also available with different power consumption levels. The controllers can monitor and control I/O across the backplane and over network links. The ControlLogix drives can also be used to bridge and route the control and information data. The baud rate of the controllers varies up to a maximum of 12 Mbps. The maximum thermal dissipation of the controllers is 15.4 BTU per hour. Both lithium-ion and externally mounted batteries are supported by the ControlLogix controller series.
Common issues with ControlLogix modules include:
Plastics, power supply, enclosure and mounting
Mounting clips
Card enclosure
Broken connection pins
Power supply switch
Power supply plastics
Dead backplane
Rack plastics
Din rail clips
Doors
Connecting tabs (compact logix)
Terminal block
Node address switches
Communications
Faulty key switch
DH+ port
Ethernet port
Firmware update
RS-232 ports
Lights
LED indicators
Solid fault light
Flashing fault light
I/O
Discrete output replacement relay or TRIAC
Discrete input replacement
Analog out
Analog in
RTD channel repair
Fused input/output replacement
fault/error codes
Fatal Error
Major faults
Recoverable faults