Product Description
The Allen-Bradley 1771-IK is a counter/encoder module for PLC-5 systems, featuring one counter channel and a dual-channel encoder, handling peak input pulse rates up to 50 kHz. It supports both block and single transfer modes and requires a 12-24V DC external power supply. Input circuits draw a maximum of 170mA, while output circuits require up to 1.08A. Input devices must sink 10mA (12V DC) or 20mA (24V DC). The two open collector outputs are rated at 500mA each, with an output voltage matching the external supply. The module dissipates a maximum of 12.1W (41.3 BTU/hr) and installs in a vacant slot of a 1771 chassis, drawing 1.2A (typical) to 1.4A (maximum) from the backplane. The external power supply provides 75mA at 24V DC or 150mA at 12V DC. Vibration tolerance is 2G (10-500 Hz), with shock ratings of 30G (operating) and 50G (storage). This open-enclosure module operates within a 0-60C temperature range.
Is Your Device Showing These Signs?
The Allen Bradley 1771-IK input module commonly experiences issues such as blown input fuses due to overcurrent events, resulting in a loss of signal from field devices. Technicians frequently address problems with corroded terminal blocks, which cause intermittent or complete signal loss, requiring cleaning or replacement. Failures in the internal power supply components lead to module malfunction, necessitating repair or replacement of the power supply. Backplane communication errors are traced to faulty connections or a damaged backplane, demanding inspection and repair of the backplane and connector pins. Finally, component degradation from thermal stress or age causes inaccurate or unstable input readings, requiring component-level repair or module replacement.
Technical specifications
The Allen-Bradley 1771-IK is a counter/encoder module designed for PLC-5 systems. It has one counter channel and a dual-channel encoder, supporting high-speed input pulses up to 50 kHz. It requires an external 12-24V DC power supply and has specific current draw requirements for both input and output circuits. The module features two 500mA open collector outputs, dissipates a maximum of 12.1W, and installs in a 1771 chassis, drawing current from the backplane. It has specified vibration and shock tolerances and operates within a 0-60C temperature range.
Our Repair Process for the
1771-IK
Our repair process for the Allen Bradley 1771-IK input module begins with a thorough inspection to identify blown input fuses, corroded terminal blocks, power supply failures, backplane communication errors, and component degradation. Blown input fuses are replaced, and the cause of the overcurrent event is investigated and rectified. Corroded terminal blocks are cleaned or replaced to ensure proper signal transmission. Power supply failures are addressed through component-level repair or replacement of the power supply unit. Backplane communication errors require inspection and repair of the backplane and connector pins to establish reliable communication. Component degradation is resolved through component-level repair or complete module replacement to restore accurate and stable input readings.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.