Eaton 8650C74G01

Eaton 8650C74G01 is a sensor input module designed for industrial automation systems. Featuring a PCB circuit board design (Rev 4/Rev 5), it enables the collection and digitization of multi-channel discrete signals, and is often used with PLCs, DCSs, or fieldbuses (such as Fieldbus). As a universal input unit in the Eaton 8650 series, this module is compatible with various on-site sensors (digital, pulse, counter, etc.) and provides reliable electrical isolation and protection.

Key Technical Specifications 

• Rated Voltage: 24 V DC (typical), with an adjustable range of 12 V–30 V DC.
• Number of Input Channels: 8 channels (each with independent isolation), and each channel can be configured for voltage or current input.
• Input Type: Digital switching signals (ON/OFF), optional 0‑10 V, 4‑20 mA, PNP/NPN compatible.
• Isolation Voltage: ≥ 1500 V DC (internal module isolation), meeting industrial on-site safety requirements.
• Operating Temperature: -55 °C ~ +125 °C, suitable for extreme environments.
• Package Type: 2‑SMD square terminal block, surface mount technology (SMT), dimensions: 6.10 mm × 2.57 mm × 2.57 mm (L × W × H).
• Power Supply: Surface mount power supply, supporting a power input with a rated current of 20 A.
• Certifications: Complies with international safety standards such as IEC 60947‑4‑1 and UL 508.

Product Features

• High Reliability: Adopts industrial-grade components and a wide operating temperature range, enabling long-term operation in harsh on-site environments.
• Complete Isolation: Each input channel achieves 1500 V DC isolation to prevent noise coupling and electrical interference.
• Flexible Configuration: Supports both voltage and current input modes, which can be freely switched via software or jumpers, compatible with various sensors.
• Compact Size: Surface mount package, suitable for high-density cabinets or fieldbus panels.
• Easy Maintenance: Modular design allows for quick replacement in case of failure, and complete terminal block identification is provided.
• Strong Compatibility: Complies with Eaton 8650 series standards and can be directly inserted into corresponding I/O expansion chassis or fieldbus panels.

Structure and Composition

• PCB Main Board: Multi-layer printed circuit board, with internal wiring realizing signal isolation and power distribution.
• Input Terminal Block: 8 independent terminals with square terminal bases for easy on-site wiring.
• Isolation Capacitors/Transformers: Each channel is equipped with a high-voltage capacitor or a small isolation transformer to achieve electrical isolation.
• Identification Layer: The PCB surface is printed with channel numbers, input type indicators, and warning signs for easy on-site identification.
• Housing/Shield (Optional): Provides dustproof and moisture-proof metal or plastic shields for harsh environments.

Typical Application Fields

• Process Control Systems: Collect digital sensor signals (such as limit switches, flow meter pulses) and send them to PLCs/DCSs.
• Machine Vision and Inspection: Receive high-speed discrete signals from photoelectric sensors, grating counters, etc.
• Automated Assembly Lines: Monitor safety-related signals such as safety doors, emergency stop buttons, and position sensors.
• Energy Management: Cooperate with power monitoring systems to read the status of current/voltage relays.
• Fieldbus Networks: Used as a Fieldbus (Profibus, Modbus, Ethernet/IP) I/O expansion module.

Installation and Maintenance Guidelines

Pre-Installation Checks

• Confirm that the power supply voltage is within the module’s rated range.
• Check whether the heat dissipation and protection level of the chassis or panel meet on-site requirements.

Wiring Notes

• Wire according to the channel numbers marked on the module to ensure matching voltage/current types.
• Use shielded wires or twisted-pair wires that comply with IEC standards to reduce electromagnetic interference.
• The ground terminal must be reliably grounded to prevent electrostatic discharge.

Fixing Method

• Use standard DIN rails or cabinet screws for fixation to ensure the module does not loosen due to vibration.

Commissioning and Testing

• After power-on, use the diagnostic software provided by Eaton or the PLC I/O detection function to verify the input status of each channel one by one.
• Check whether the isolation voltage is normal to ensure complete safety isolation.

Daily Maintenance

• Regularly inspect terminals for corrosion and loosening, and re-tighten if necessary.
• Remove dust and moisture to keep the module’s heat dissipation channels unobstructed.
• In case of failure, quickly replace the module according to its serial number to avoid system downtime.

If you would like to learn more about our products and services, please feel free to contact us at any time!

• Sales Manager : Jinny
• Email : sales5@xrjdcs.com
• Whatsapp/Mobile:+86 15359273791

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