Product Overview

The 900G01-0202 belongs to the contact closure digital input family. This module is self-powered for simplified field wiring. The 900G01-0202 provides 15 VDC nominal to external switching hardware. A closed external circuit causes current flow to establish an ON state. Logic in the controller allows state inversion when necessary. The 900G01-0202 has four common terminals to simplify field wiring connections.

Technical Specifications

The 900G01-0202 delivers reliable digital input monitoring for contact closure applications. All parameters follow the official datasheet.

Input Specifications

• Inputs per module: 16 (single-ended)

• Voltage supplied by controller: 15 VDC normal

• Maximum contact resistance: 1000 ohms

• Switching current: 2.6 mA nominal

• A closed external circuit with less than 1000 ohms creates an ON state.

Response Times

• OFF to ON response time: 4 ms maximum

• ON to OFF response time: 6 ms maximum

• Note: Response times exclude controller scan time and transmission time from module to backplane.

Isolation & Protection

• Galvanic isolation: Between field wiring (input or output) and module

• The 900G01-0202 provides electrical separation for safe operation.

LED Indicators

• Per channel indicator: Green LED shows when a digital input is ON

• Module status blinking green LED: Indicates the module is being scanned

• Module status red LED: Indicates when module diagnostics exist

Installation Guide

Follow these steps to install the 900G01-0202 correctly.

1. Power down your controller chassis before inserting the module.

2. Align the 900G01-0202 with the correct slot in the rack.

3. Slide the module firmly into place until fully seated.

4. Connect external switching contacts to the 16 input channels.

5. Use the four common terminals to simplify your field wiring.

6. Verify contact resistance is less than 1000 ohms for reliable ON state.

7. Apply power and monitor the green blinking status LED for scan indication.

Packing List

This package for the 900G01-0202 includes the following items.

• 900G01-0202 digital input module (one unit)

• Product identification label sheet

• Anti-static protective bag

• Basic installation instruction leaflet

Frequently Asked Questions (FAQ)

1. How many inputs does the 900G01-0202 provide?
The 900G01-0202 provides 16 single-ended digital inputs. Four common terminals are provided to simplify field wiring connections.

2. What voltage does the 900G01-0202 supply to external contacts?
The 900G01-0202 is self-powered and supplies 15 VDC nominal. This voltage powers the external switching hardware for input loop closure.

3. What is the maximum contact resistance for the 900G01-0202?
The maximum contact resistance is 1000 ohms for the 900G01-0202. A closed circuit below this value establishes an ON state reliably.

4. What are the response times for the 900G01-0202?
The OFF to ON response time is 4 ms maximum. The ON to OFF response time is 6 ms maximum for the 900G01-0202.

5. What do the LEDs indicate on the 900G01-0202?
Each channel has a green LED for ON state indication. A blinking green status LED shows the 900G01-0202 is being scanned. A red LED indicates module diagnostics exist.