57C330C AutoMax Remote I/O Head 804100-RX Reliance Electric

The Reliance Electric 57C330C AutoMax Remote I/O Head 804100-RX is a small, rack-mounted remote I/O interface module that connects AutoMax control systems to distributed field I/O over a strong coaxial network. The 57C330C makes it easy for the AutoMax Remote I/O network to talk to several local I/O heads. This helps to modernise and extend old Reliance/ABB/Baldor AutoMax installations in factories.

The 57C330C AutoMax Remote I/O Head connects the AutoMax Remote I/O network to local I/O racks or subsystems. It is an important part of distributed PLC and drive control topologies. It is often used with Reliance AutoMax controllers in process, material handling, and drive systems when remote drops need to send and receive data across great distances in a predictable way.

57C330C AUTOMAX REMOTE I/O HEAD Details:

• Brand: Reliance Electric / Baldor Reliance / ABB (AutoMax family).​

• Model: 57C330C AutoMax Remote I/O Head, B/M 804100‑RX.​

• Function: Remote I/O head / head adapter for AutoMax Remote I/O network.​

• Typical supply: 120/240 VAC, 47.5–63 Hz.​

• Status: Discontinued by manufacturer, widely available as surplus/used/refurbished for MRO and retrofit

RELIANCE ELECTRIC 57C330C Features:

1) Remote I/O port for AutoMax

• It acts as the main adapter between the AutoMax Remote I/O coaxial network and local I/O heads or drops.
• Supports many distant drops on the network, which lets you build distributed control systems with centralised processors.

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2) The ability to connect in different ways

• Depending on how the system is set up, it can accommodate up to four connected I/O heads or interface points on a drop.
• The RS-232 compliant serial port and thumbwheel switch make it easier to address and troubleshoot problems in the field.

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3) Wide range of AC power inputs

• Rated for 120/240 VAC operation, with a typical current of 0.5/0.25 A and a three-cycle hold-up period enabling ride-through on short disturbances.
• The 50/60 Hz frequency range lets plants all across the world use it, even if they have different mains standards.

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4) Design that is small and works well with panels

• The approximate size is 23.9 cm (H) × 14.0 cm (W) × 19.2 cm (D), which makes it easy to put in control panels or cabinets.
• It weighs about 2.9 kg (6.5 lb), which is heavy enough for industrial use.

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5) Reliability for industry

• Built to work all the time in tough industrial settings as part of the AutoMax ecosystem.
• Automation resellers often sell tested or refurbished products with extended warranty support.

Usage:

• AutoMax-based drive systems (DC/AC drives, coordinated line drives) that need remote I/O drops to get field signals.
• Process control and material handling systems with I/O panels spread out over conveyors, cranes, or production lines.
• Retrofit and maintenance work on old Reliance AutoMax PLC systems, where a direct replacement 57C330C head extends the life of the system and keeps it from having to move to a new control system.