- 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 SLC 500 Repair
We offer extensive repairs for your SLC 500. We keep many spare parts in stock so that we can repair your SLC 500 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 SLC 500 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 SLC 500 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 SLC 500 Repairs
Browse our catalog of repairable SLC 500 parts to get a quote.
1746-NO8I
The Allen-Bradley 1746-NO8I is a SLC 500 Analog Output Module. This Analog Output Module has 8 Outputs and a Backplane Current (5 Volts) of 120 milliamps.
In Stock Ships Today
1746-NO8V
The Allen-Bradley 1746-NO8V is a SLC 500 Analog Output Module. This Analog Output Module has 8 Outputs and a Backplane Current (5 Volts) of 120 milliamps.
In Stock Ships Today
1746-NPK
This SLC replacement kit supports eight outputs and features an update time of 540 microseconds across all channels. It operates within a temperature range of 0°C to 60°C, with storage capabilities be
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1746-NR4
The Allen-Bradley 1746-NR4 is a SLC 500 RTD/Resistance Analog Input Module. This RTD/Resistance Analog Input Module has 4 Inputs and a Backplane Current of 50 milliamps.
In Stock Ships Today
1746-NR8
The Allen-Bradley 1746-NR8 is a SLC 500 RTD/Resistance Analog Input Module. This RTD/Resistance Analog Input Module has 8 Inputs and a Backplane Current (5 Volts) of 100 milliamps.
In Stock Ships Today
1746-NT4
The Allen-Bradley 1746-NT4 is a SLC 500 Thermocouple/mV Analog Input Module. This Thermocouple/mV Analog Input Module has 4 Inputs and a Backplane Current (5 Volts) of 60 milliamps.
In Stock Ships Today
1746-NT8
The Allen-Bradley 1746-NT8 is a SLC 500 Thermocouple/mV Analog Input Module. This Thermocouple/mV Analog Input Module has 8 Inputs and a Backplane Current (5 Volts) of 120 milliamps.
In Stock Ships Today
1746-OA16
This output module contains 16 outputs organized into common groups of 8. It functions efficiently within an operating frequency of 47-63 Hz. The device showcases a backplane current consumption of 0.
In Stock Ships Today
1746-OA16-CC
The Allen-Bradley 1746-OA16-CC Module is an SLC 500 Digital I/O Module. It has 16 total outputs and 8 points per common group. Its backplane current consumption rating is 0.37 Amps and it has a maximu
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1746-OA8
The Allen-Bradley 1746-OA8 is a SLC 500 Digital AC Output Module. This Digital AC Output Module has a Voltage Range of 85-265 Volts AC and 8 Outputs. It has a Backplane Current (5 Volts) of 185 millia
In Stock Ships Today
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About SLC 500
The SLC 500 series is a series of programmer controllers manufactured by Allen-Bradley that provides excellent features and abilities. These controllers can serve a wide range of application demands, including material handling, HVAC control, high-speed assembly operations, simple motion control, and small process control. The controllers use an advanced instruction set which includes indirect addressing as well as high-level math capabilities. For network connectivity, the SLC 500 controllers use onboard Ethernet, DH+, or DH 485 ports. There are also options for ControlNet, DeviceNet, and remote I/O communication. The controllers are manufactured in compact designs and they can fit in compact locations. The SLC 500 controllers offer a broad selection of I/O. They have over 60 modules to control discrete, analog, and temperature signals. They also support 3rd-party modules. For programming, the RSLogix 5000 software can be used.
The SLC 500 controllers use backup options for fault tolerance with the ControlNet module or backup communication module. This controller series offers single channel and single port controllers for regular operation. The controllers are available with a wide range of operating voltage. The operating voltage ranges from 5 to 265 Volts AC or 5 to 125 Volts DC, 24 Volts AC/DC sink voltage, and 85 to 132 Volts AC and 10 to 30 Volts DC. The programmer controllers are manufactured with different step responses which include 60 milliseconds input and 2.5 milliseconds output, 100 milliseconds input and 2.5 milliseconds output. The SLC 500 series controllers use flash, EEPROM, and Flash EPROM as backup memory. The controllers in this series use different processors like the 502, 503, 504, 505, and 501 processors. The controller series has been certified with the KC, C-Tick, UL, and CE standards. A one-year warranty is offered by the manufacturer from the date of installation.
Common issues with the SLC 500
Plastics, power supply, enclosure and mounting
Broken doors
Face plate
Mounting clips
Plastic card enclosure
Dead backplane
Connecting pins
Missing jumper caps
Power supply plastics
Power supply out 24v DC
Enclosure plastics
Enclosure backplane
Power supply LED power on indicator
Grounding terminals
Node address switches
Communications
RS-232 ports
DH+ ports
Ethernet port
DH485 ports
Faulty key switch
Lights
Flashing non recoverable fault
Solid non recoverable fault
Solid red DH+
LED indicators
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
Minor Error
Channel 0 Modem Lost
Major error fault
Battery Low
Error code 21H