- 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.
1747-DTAM-E
This module enables monitoring and modification of data tables. It features a clear LCD display that supports 16 characters across 2 lines. Users will find an integrated keypad and LED indicators for
In Stock Ships Today
1747-FC
This ferrite collar primarily serves to suppress electromagnetic interference (EMI) and radio frequency interference (RFI). It is compliant with the European EMC Directive and is intended to be instal
In Stock Ships Today
1747-KE
The Allen-Bradley 1747-KE is a SLC 500 DH-485/DF1 Interface Module. This DH-485/DF1 Interface Module has RS-232 Port Communication along with RS-232/423, -422, -485, DH-485 Communication Ports with a
In Stock Ships Today
1747-KFC15
The Allen-Bradley 1747-KFC15 is a SLC 500 ControlNet RS-232 Interface Module. This ControlNet RS-232 Interface Module has RS-232 Port Communication along with 640 milliamps Backplane Current (5 Volts)
In Stock Ships Today
1747-KY1
The 1747-KY1 is compatible with SLC 5/03, SLC 5/04, and SLC 5/05 processors. It is a set of two keys that can operate from 32°C to 140°C. The keys can be stored in environments as cold as -40°F and as
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1747-L20
The Allen-Bradley 1747-L20 is a SLC 500 Fixed Processor. This Fixed Processor has 2 Chassis Module Slots with DH-485 Communications and EEPROM Backup Memory.
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1747-L20A
The Allen-Bradley 1747-L20A is a SLC 500 Fixed Controller. This Fixed Controller has (12) 120 V AC Inputs, 8 AC/DC Relay Outputs and 120-240 Volts AC Line Power.
In Stock Ships Today
1747-L20B
The Allen-Bradley 1747-L20B is a SLC 500 Fixed Controller. This Fixed Controller has (12) 120 V AC Inputs, 8 AC Triac Outputs and 120-240 Volts AC Line Power.
In Stock Ships Today
1747-L20C
The Allen-Bradley 1747-L20C is a SLC 500 Fixed Controller. This Fixed Controller has (12) 24 V DC Sink Inputs, 8 AC/DC Relay Outputs and 120-240 Volts AC Line Power.
In Stock Ships Today
1747-L20D
The Allen-Bradley 1747-L20D is a SLC 500 Fixed Controller. This Fixed Controller has (12) 24 V DC Sink Inputs, 8 AC Triac Outputs and 120-240 Volts AC Line Power.
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