Allen-Bradley 1771-ID01 6-Channel AC/DC Input Module

Allen-Bradley 1771-ID01 Isolated AC/DC Input Module

Product Introduction

The Allen-Bradley 1771-ID01 is an isolated AC/DC input module from the PLC-5 series. This module provides six (6) input channels that accept either AC or DC signals. Specifically, its AC operating voltage ranges from 184 to 276 Volts, while its DC range spans 18 to 276 Volts. This wide voltage range makes it exceptionally versatile for various industrial applications.

Furthermore, the 1771-ID01 module offers complete isolation between the field inputs and the backplane. This isolation protects your PLC system from high-voltage transients and electrical noise. It is designed to interface with AC input devices like float switches, limit switches, pushbuttons, and selector switches used in isolated-circuit multiple-phase applications.

The module ships with a field wiring arm, catalog number 1771-WD. This removable arm simplifies wiring and maintenance. Additionally, the Allen-Bradley 1771-ID01 carries CE marking, UL listing, and CSA certification, ensuring compliance with international safety standards.

Technical Specifications

The 1771-ID01 module operates with an AC voltage range of 184 to 276V AC. For DC operation, it accepts 18 to 276V DC. This dual-voltage capability allows the same module to handle different input types within a single system. The module draws a backplane current of only 74 mA at 5V DC, which is quite efficient.

Its maximum off-state current is 0.7 mA for AC signals and 1.0 mA for DC signals. These low leakage currents prevent false triggering from connected devices. The module's signal delays vary depending on the input type. For AC signals, the typical ON and OFF delay is 20 ms (±10 ms). For DC signals, the ON delay is 10 ms (±4 ms), while the OFF delay is 20 ms (±9 ms).

The Allen-Bradley 1771-ID01 is designed to work with output modules as well. To directly drive terminals on this input module, you can use an AC output module rated 220-240V. For this connection, install an electrocube snubber or a 3.3K ohm 20W resistor between the output terminal and common. Additionally, use the same AC source to power both the input and output. This practice promotes proper phasing and avoids module damage.

Application & Compatibility

The 1771-ID01 module is built for high-power operations. It provides system protection through its isolated design. This isolation is particularly valuable in applications with multiple-phase circuits where voltage spikes can occur.

Compatible field devices include float switches, limit switches, pushbuttons, and selector switches. These devices are commonly found in motor control centers, pump stations, and conveyor systems. The module's wide voltage range also makes it suitable for international applications where supply voltages may vary.

For installation, the Allen-Bradley 1771-ID01 fits into any standard 1771 I/O chassis. It supports standard PLC-5 addressing schemes. Each of the 6 input channels corresponds to a specific bit in the PLC data table, simplifying programming and troubleshooting.

Mechanical & Environmental Data

This input module has compact dimensions of 3.5 x 6.5 x 2.0 inches (89 x 165 x 51 mm). It occupies a single slot in your 1771 I/O chassis. The module is built to industrial standards, ensuring reliable operation in demanding environments.

The included 1771-WD field wiring arm provides secure screw terminal connections. This removable arm allows you to pre-wire the arm on your workbench. Then, simply attach it to the module during installation. If the 1771-ID01 ever needs replacement, you can detach the wiring arm from the old module and attach it to the new one. This eliminates the need to disconnect and re-terminate each individual wire.

Packaging List

• 1 x Allen-Bradley 1771-ID01 Isolated AC/DC Input Module

• 1 x 1771-WD Field Wiring Arm

• 1 x Installation Instructions Sheet

Shipping: We ship worldwide using FedEx, UPS, or DHL.

Frequently Asked Questions (FAQ)

1. What voltage ranges does the 1771-ID01 module accept?
The 1771-ID01 accepts 184-276V AC and 18-276V DC input signals.

2. How many input channels does this module have?
It has six (6) isolated input channels for AC or DC devices.

3. What is the backplane current draw of the 1771-ID01?
The module draws 74 mA from the 5V DC backplane supply.

4. Can I use an output module to drive the 1771-ID01 inputs?
Yes, you can use an AC output module rated 220-240V. Remember to install a snubber or resistor between the output terminal and common.

5. What wiring arm does the 1771-ID01 require?
This module uses the 1771-WD field wiring arm, which is included with the purchase.