1771-IK Allen-Bradley PLC-5 Encoder/Counter Module

Product parameters

Basic information:

Manufacturer: Allen-Bradley (Rockwell Automation)

Model: 1771-IK (Series A, B, etc.)

Type: Counter/encoder input module

Compatible system: PLC-5 series, installed on the 1771 I/O rack

Installation requirements: Occupy one 1771 I/O rack slot, compatible with 1771-A1B, A2B, A3B, A3B1, A4B, AM1, AM2 racks (not compatible with 1771-A1, A2, A4)

Electrical parameters:

Input channel:

1 counter channel or 1 encoder (dual-channel A/B signal)

Input voltage: External power supply 12-24V DC

Input current:

12V DC: Maximum 170 mA (input circuit), 75 mA (external power supply)

24V DC: Maximum 170 mA (input circuit), 150 mA (external power supply)

Output current: 2 open-circuit collector outputs, each with a maximum of 500 mA, and the output voltage is equal to the external power supply voltage

Backplane current: 1.2A @ 5V DC (typical), 1.4A (maximum)

Power dissipation: Maximum 12.1W

Heat dissipation: Maximum 41.3 BTU/ hour

Pulse frequency: Maximum 50 kHz (peak input pulse rate)

Operating temperature: 0°C to 60°C (32°F to 140°F)

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

Relative humidity: 5% to 95% (no condensation)

Connection and wiring:

Wiring arm: 1771-WF (12 terminals, gold plating, live plug and unplug support)

Key control positions: 16-18 pins of the upper connector, 10-12 pins of the lower connector (to prevent incorrect installation)

Power supply requirements: An external 12-24V DC power supply is required. The input device needs to be capable of absorbing:

12V DC: 10 mA

24V DC: 20 mA

Supported modes: Supports single transmission and block transmission modes

Others:

Indicator lights: 8 status indicator lights (red/green), used to display the module status, input signal and output status

Certifications: UL, CSA, CE

Support for addressing: Supports 1/2 slot, 1 slot and 2 slot I/O addressing

Isolation: Provide photoelectric isolation to protect the system from electrical transients

Function

High-frequency counting and encoder processing

Supports single-channel counter or dual-channel (A/B) encoder input, with a maximum pulse frequency of 50 kHz, suitable for high-precision positioning and speed detection.

It can handle incremental encoder signals and calculate position, speed or direction.

Output control

It provides two open-collector outputs (up to 500 mA/ output), which can be used to trigger external devices (such as relays or indicator lights), and the output voltage is determined by the external power supply.

Data transmission mode:

Support Single Transfer mode or Block Transfer mode to exchange data efficiently with the PLC processor.

The counting data is transmitted to the PLC data table through the backplane for program processing.

Modular design

The 1771-WF wiring arm is used, supporting modular wiring, which is convenient for installation and maintenance.

Supports RIUP (live plug and unplug) to reduce system downtime.

Status monitoring

It is equipped with 8 status indicator lights, which display the module's operating status, input signals and output status in real time, facilitating fault detection.

It provides photoelectric isolation and input filtering functions to reduce electrical noise interference.

System Integration

Compatible with ControlNet, remote I/O and extended local I/O networks, it is suitable for distributed control systems.

It can be combined with the 1771 series modules to build complex motion control systems.

Application scenarios

Motion control and Positioning

It is used in scenarios that require high-precision counting or encoder signal processing, such as servo motor control, CNC machine tools, robot positioning and conveyor belt speed monitoring.

It is suitable for devices that need to detect rotational or linear motion, such as encoders or pulse generators.

Industrial Automation

It is applied to automated production lines to monitor the signals of rotary encoders or counting sensors, and is used for part counting, position tracking or speed control.

Suitable for automotive manufacturing, packaging equipment and material handling systems.

Distributed control system

In large factories, counter/encoder signals are integrated into the central PLC-5 controller through remote I/O or ControlNet networks.

Motion monitoring applicable to the energy, chemical or water treatment industries.

Traditional system maintenance

It is applicable to the old automation systems based on PLC-5, especially when it is necessary to continue using the existing equipment.

It can be used as a transitional module to support migration to modern ControlLogix or CompactLogix systems.

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

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