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GE SD-108542 Digital Input Module
GE SD-108542 Digital Input Module
GE SD-108542 Digital Input Module
GE SD-108542 Digital Input Module
GE SD-108542 Digital Input Module

GE SD-108542 Digital Input Module

Product Code: SD-108542
Availability: In Stock
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The GE SD-108542 is a high-performance 16-channel digital input module, which is part of the Series 90-70 PLC system from GE Fanuc (now integrated into GE Automation & Controls).

Ship to you via Fedex/DHL/TNT/UPS/EMS  丨 Package: Original packing with cartons  丨 Shipping Port: Xiamen   

·Manager: Jinny

·E-mail:sales1@xrjdcs.com

·Tel: + 86-15359273791 （WhatsApp）

·Wechat: + 86-15359273791

Product Description

GE SD-108542

Product Overview

The GE SD-108542 is a high-performance 16-channel digital input module, which is part of the Series 90-70 PLC system from GE Fanuc (now integrated into GE Automation & Controls). As a key component of the 90-70 I/O family, this module is specifically designed for reliably acquiring DC discrete signals from field devices in industrial automation environments—such as buttons, limit switches, proximity sensors, and relay contacts. Its core function is to isolate, condition, and convert 24V DC field signals into logic-level signals that the PLC CPU can process, thereby providing accurate status feedback for the control system.

With its high channel density and robust design, the SD-108542 module delivers efficient and cost-effective solutions in discrete manufacturing applications, including automotive production lines, material handling systems, and packaging machinery. It ensures the stability and reliability of large-scale digital signal acquisition, serving as the foundation for implementing logic control, sequence control, and status monitoring.

Product Specifications

  • Product Model: SD-108542
  • Manufacturer: GE (General Electric) / GE Fanuc
  • Product Type: 16-point DC digital input module
  • Product Series: Series 90-70
  • Number of Input Points: 16 points, divided into two groups (8 points/group) with common terminals
  • Input Type: Dry contact or sinking type [configured via jumpers]
  • Rated Input Voltage: 24V DC
  • “ON” Signal Voltage Range: 15V to 30V DC (typical)
  • “OFF” Signal Voltage Range: 0 to 5V DC (typical)
  • Input Impedance: 3.9 kΩ
  • Isolation Method: Optoelectronic isolation (between channels and backplane)
  • Backplane Current Consumption: 5V DC, 100mA (maximum)
  • Operating Temperature: 0°C to +60°C
  • Mounting Method: Installed in a slot of the Series 90-70 I/O rack

SD-108542

Structure and Composition

The SD-108542 module adopts the standard modular structure of the Series 90-70 series. Its sturdy metal housing provides excellent electromagnetic interference (EMI) resistance. On the front of the module, there are two detachable 20-pin socket connectors—each responsible for 8 input channels and their common terminals. This design simplifies wiring and facilitates maintenance.

Above the front panel, a row of 16 green LED indicators is installed, with one indicator corresponding to each input channel. These indicators 直观地 display the real-time signal status (ON/OFF) of the respective channels, greatly simplifying on-site debugging and fault diagnosis.

Internally, each input channel is equipped with an optocoupler, which achieves electrical isolation between the field input circuit, the module’s internal logic circuit, and the PLC backplane. This effectively prevents ground loops and high-voltage surges from damaging the PLC system. At the bottom of the module, a gold-finger connector is used to insert into the backplane of the Series 90-70 rack, enabling data and power exchange with the CPU and other modules.

Key Features and Advantages

High Density and Flexible Configuration

The SD-108542 offers a high-density configuration with 16 input channels, enabling the acquisition of a large number of signals in a single slot. This optimizes rack space and reduces the cost per point. The module supports jumper-based configuration for each input group to select either dry contact (contact-type) or sinking (solid-state device) input modes. This flexibility allows it to adapt to various types of field signal sources, eliminating the need to replace the module to meet different application requirements.

Excellent Reliability and Noise Immunity

The built-in optoelectronic isolators in the module provide effective isolation up to 1500V AC, ensuring that electrical noise, voltage spikes, and ground potential differences on the field side do not interfere with the sensitive PLC control system. Its robust industrial-grade design and wide input voltage range (15-30V DC recognized as “ON”) enable stable operation in noisy factory electrical environments, minimizing false triggers.

Convenient Diagnosis and Maintenance

Each channel is equipped with an independent LED status indicator, providing immediate visual feedback for operators and maintenance personnel. This allows quick identification of fault points—such as broken wires, sensor failures, or power issues—significantly reducing downtime for troubleshooting. The detachable front connectors enable wiring to be completed on a workbench and allow for quick plug-and-play, simplifying installation and replacement processes.

Installation and Maintenance

Pre-Installation Preparation

Before installing the SD-108542 module, ensure that the power supply of the Series 90-70 rack is completely turned off. Confirm that there is an empty slot on the rack. Correctly set the jumpers on the module according to the field signal type (dry contact or sinking). Prepare the corresponding 20-pin front connectors and cables that meet specifications.

Maintenance Recommendations

Daily maintenance primarily involves observing the LED indicators on the front of the module to confirm that the status of each input channel is consistent with the status of field devices. Regularly check whether the front connectors are firmly plugged in and whether the wiring screws are loose.
If a channel malfunctions, first inspect the field sensor, power supply, and wiring. The module itself does not require regular maintenance; if a module fault is confirmed, it can be directly replaced. When replacing, pay attention to anti-static measures and perform the operation with the power turned off.

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Xingruijia

Original factory direct supply, quality assurance - GE module professional supplier

Consult now to obtain the latest technical information and quotation for GE modules!

·Manager: Jinny                                         ·E-mail: sales1@xrjdcs.com     

·Tel: + 86-15359273791（WhatsApp）   ·Wechat: + 86-15359273791

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The GE SD-108542 is a high-performance 16-channel digital input module, which is part of the Series 90-70 PLC system from GE Fanuc (now integrated into GE Automation & Controls).

Ship to you via Fedex/DHL/TNT/UPS/EMS  丨 Package: Original packing with cartons  丨 Shipping Port: Xiamen   

·Manager: Jinny

·E-mail:sales1@xrjdcs.com

·Tel: + 86-15359273791 （WhatsApp）

·Wechat: + 86-15359273791