Allen-Bradley 1762-IQ8OW6 Combination I/O Module

1762-IQ8OW6 MicroLogix Combination I/O Module

Product Introduction

The 1762-IQ8OW6 from Allen‑Bradley is a versatile combination I/O module designed for the MicroLogix 1100, 1200, and 1400 programmable controller families. This expansion unit integrates eight digital input channels and six relay output channels into a single housing. Consequently, it reduces the number of separate modules required and frees up valuable space inside your control cabinet.

The eight input channels are configurable as either sink or source types, accepting a wide DC voltage range from 10 to 30V DC. This flexibility allows direct connection to various sensors, pushbuttons, and limit switches without additional interface circuitry. Meanwhile, the six Form A (normally open) relay outputs can switch both AC and DC loads, with contact ratings up to 2.5 A at 240V AC. This makes the 1762-IQ8OW6 suitable for driving contactors, solenoids, indicator lamps, and small motors.

Furthermore, the module supports a power supply distance of up to six slots, meaning it must be installed within six positions from the system power supply. Its backplane current draw is 110 mA at 5V DC and 80 mA at 24V DC, with heat dissipation of 5.0 W at 30V DC. These ratings ensure stable operation even in densely populated I/O racks.

Whether you are upgrading an existing machine or building a new control panel, the 1762-IQ8OW6 offers a reliable and cost‑effective way to expand your I/O capacity. Its robust design, combined with Allen‑Bradley’s proven quality, makes it a trusted choice for industrial automation professionals worldwide.

Technical Specifications

The 1762-IQ8OW6 delivers dependable digital I/O performance across all channels. Key parameters are detailed below:

Input Specifications

• Number of inputs: 8 (arranged in two groups of 4)

• Input type: Sink or source (user‑selectable)

• Nominal input voltage: 24V DC

• Operating voltage range: 10–30V DC (at 30 °C) / 10–26.4V DC (at 65 °C)

• Minimum On‑state voltage: 10V DC

• Maximum Off‑state voltage: 5V DC

• On‑state current: 10 mA at 5V DC

• Signal delay (ON→OFF and OFF→ON): 8 ms each

• Input groups: Group 1 = inputs 0–3, Group 2 = inputs 4–7

Output Specifications

• Number of outputs: 6 (Form A / normally open)

• Contact voltage range: 5–265V AC; 5–125V DC

• Continuous current per point:

  • 2.5 A at 240V AC / 120V AC

  • 2.0 A at 24V DC

  • 1.0 A at 125V DC

• Maximum current per common: 8 A

• Maximum current per module: 8 A

• Switching delay (ON and OFF): 10 ms with resistive load

• Off‑state leakage: 0 mA (mechanical relay)

• Minimum On‑state current: 10 mA

Power & Isolation

• Backplane current draw: 110 mA at 5V DC; 80 mA at 24V DC

• Heat dissipation: 5.0 W at 30V DC; 4.4 W at 26.4V DC

• Power supply distance rating: 6 modules maximum

These specifications ensure that the 1762-IQ8OW6 can handle a wide variety of field devices with confidence. The clear grouping of inputs and outputs also simplifies wiring and troubleshooting.

Mechanical & Environmental Ratings

The module is built to withstand typical industrial conditions. Its mechanical and environmental characteristics include:

• Dimensions (H x W x D): 90 x 40.4 x 87 mm (3.54 x 1.59 x 3.43 in.)

• Height including mounting tabs: 110 mm (4.33 in.)

• Weight: Approximately 280 g (0.62 lb)

• Operating temperature: –20 to 65 °C (–4 to 149 °F)

• Storage temperature: –40 to 85 °C (–40 to 185 °F)

• Relative humidity: 5–95% non‑condensing

• Shock tolerance: 30G (per IEC 60068‑2‑27)

• Vibration tolerance: 5G at 10–500 Hz

The compact footprint allows the 1762-IQ8OW6 to be mounted on a standard DIN rail or directly onto a panel. Additionally, the module’s rugged construction ensures reliable operation in environments with temperature fluctuations and mechanical vibration.

Installation Guidelines

Proper installation of the 1762-IQ8OW6 ensures optimal performance and longevity. Follow these steps:

1. Mounting: Secure the module on a 35 mm DIN rail or attach it to a mounting plate using the integrated clips. Ensure the module is firmly seated and locked in place.

2. Bus Connection: Connect the ribbon cable from the adjacent module or controller base to the bus connector on the side of the 1762-IQ8OW6. This establishes communication and power distribution.

3. Power Supply Distance: Verify that the module is placed within six slots of the power supply. Exceeding this distance may cause voltage drop or unreliable operation.

4. Wiring: Connect field devices to the removable terminal blocks. For inputs, wire sensors according to sink or source configuration. For outputs, connect loads to the normally open contacts, ensuring that the current does not exceed the rated values.

5. Grounding: Connect the module’s ground terminal to the system’s protective earth. Use shielded cables for critical signals and keep I/O wiring separated from high‑voltage AC lines to minimise noise.

6. Configuration: Use the controller’s programming software to configure the input and output channels. Set up any required scaling, filtering, or alarm parameters.

After installation, power up the system and verify that the 1762-IQ8OW6 is correctly recognised by the controller. Check the status indicators for each channel to confirm proper operation.

Packaging List

When you order the 1762-IQ8OW6, the package includes:

• 1762-IQ8OW6 combination I/O module (1 unit)

• Removable terminal blocks (input and output)

• Ribbon bus cable for interconnection

• Mounting clips for DIN‑rail or panel installation

• Quick‑start installation guide (printed)

Note: Cables, power supplies, and programming software are sold separately.

Frequently Asked Questions (FAQ)

1. Can I mix sink and source wiring on the same 1762-IQ8OW6 module?
Yes, each input channel is individually configurable as sink or source. This allows you to connect different types of sensors (PNP or NPN) to the same module without external adapters.

2. What is the maximum switching frequency for the relay outputs?
The relay outputs are designed for low‑frequency switching applications. For resistive loads, the mechanical life is approximately 10 million operations, while electrical life varies with load current and voltage. We recommend using the outputs for on/off control rather than high‑speed pulse applications.

3. How do I know if the module is installed too far from the power supply?
The 1762-IQ8OW6 has a power supply distance rating of 6 modules. If you exceed this limit, the module may experience insufficient voltage or erratic behaviour. Always count the number of modules between the power supply and this unit during system layout.

4. Can the relay outputs switch DC inductive loads like solenoids?
Yes, but we strongly recommend using external surge suppression (such as a freewheeling diode or RC snubber) across the load to protect the relay contacts and extend their service life.

5. What shipping carriers do you use?
We ship all orders via FedEx, UPS, or DHL to ensure fast and reliable delivery worldwide. Please contact our sales team for tracking information and estimated delivery times.