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3 year warranty

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The Reliance Electric 57C328 is an AutoMax Remote I/O Head used in AutoMax PLC applications.



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  • Part Number: 57C328
  • SKU: 57C328RE
  • Manufacturer: Reliance Electric
  • Series: AutoMax PLC

57C328 Technical Specifications

Manufacturer Reliance Electric
Series AutoMax PLC
Part Number 57C328
Product Type Remote I/O Head
Instruction Manual J-3606

Product Description

The 57C328 is a Remote I/0 Interface Head made by Reliance Electric. It could have also been produced by Baldor Reliance and Asea Brown Boveri depending on what year it was being marketed. The 57C328 is no longer being supported by Reliance Electric. AX Control does try to keep it in stock as a new surplus or a reconditioned stock item. Please check out our website for the availability of this item.

The 57C328 is an AutoMax Remote Head. This is considered to be a communications adapter. It has the capability to interface with the remote I/O network, providing four rail ports for I/O modules. One of these rail ports can talk to an analog I/O, a local head, a digital input/output rail, or to an LED output. It is used as a slave for a Rail I/O network. It is connected to a Remote I/O Communications module (master). More than one 57C328 can be installed in this field. It has a remote drop interface that can be used to support 256 digital inputs or outputs. It can also support up to 16 analog inputs or outputs.

The 57C328 comes with a power supply that shuffles power to four full rails on the digital I/O modules. It also features a terminal strip, status indicators, a fuse, a remote network drop address switch, and a remote network communications port. This module has six LEDs that are labeled RUN, CPU READY, POWER, RAIL FAULT, FAULT LSB, and FAULT MSB. The sides of this device have air vents to help with airflow going to the internal circuitry.

Frequently Asked Questions about 57C328

What is it called when 57C328 connects with AutoMate digital and analog I/O rails and local I/O heads?
When that connection between 57C328 and the I/O rails and heads occur, it is called a Remote I/O Head Drop
What can 57C328 be used for?
57C328 can be used as an interface between the AutoMax Remote I/O network and the AutoMate rail I/O system.
Where can I find the manual for 57C328?
We can provide you with the Reliance 57C328 manual. The manual for 57C328 is the AutoMax Remote I/O Communications Manual. The manual gives a mechanical and electrical description of 57C328, then goes through installing and programming.

Repair Services For 57C328

Type Lead Time Price Action
Repair Service 1-2 weeks $283

Our highly skilled technicians can repair your 57C328. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
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57C328 Manuals, White Papers, Data Sheets, and Troubleshooting