Omron H5CN-YDN H5CNYDN Timer U

Omron H5CN-YDN Digital ON-Delay Timer, 8-Pin

Product Description

The Omron H5CN-YDN is a compact digital timer built for industrial control panels that need clear time setting, stable ON-delay operation, and straightforward integration into existing machine logic.

It belongs to the H5CN series of miniature 48 × 48 mm timers and uses a countdown display that shows the remaining time as the unit runs toward zero, which is especially useful for operators who want an immediate visual sense of process timing during setup and daily operation.

In practical applications, this model fits well in packaging equipment, small process machines, assembly stations, utility panels, and general automation systems where a simple and dependable power-ON delay function is preferred over more complex multifunction timing devices.

The H5CN-YDN uses N mode operation, a 4-digit 7-segment LED display with 10 mm character height, and a thumbwheel-style time setting interface that remains easy to read and adjust on the factory floor.

A major strength of this timer is its balance between compact size and industrial practicality.

The H5CN series supports a wide supply range, and the H5CN-YDN model is listed in the 1 minute to 99 hours 59 minutes range with down display, contact output, and 8-pin format.

For control engineers and maintenance teams, that makes it a useful choice when replacing installed panel timers or building simple delay functions into relay-based or PLC-assisted equipment.

From a hardware standpoint, the timer uses contact output, supports surface or flush mounting, and is designed for industrial service conditions rather than light-duty consumer use. The published H5CN specifications also show a light gray case, operating temperature range of -10°C to 55°C, storage temperature range of -25°C to 65°C, and operating humidity of 35% to 85%, which makes it suitable for standard control cabinet environments when installed correctly.

Technical Data

The technical data below follows the published H5CN series datasheet and the H5CN-YDN model lineup entry.

FAQ

Q1: What kind of applications is the H5CN-YDN best suited for?
The H5CN-YDN is well suited for machines and control panels that need a simple, reliable ON-delay function with visible remaining-time indication.

Typical uses include conveyor start delay, pump or fan sequencing, relay interlocking, heater start timing, small packaging equipment, and general panel timing tasks where operators benefit from a countdown display instead of elapsed-time indication.

Q2: What is the practical advantage of the countdown display?
The countdown format lets the operator see the remaining delay time at a glance, which is often more intuitive during commissioning, troubleshooting, and manual process checks. In applications where a technician needs to know how much time is left before an output changes state, a down display can be more useful than an elapsed-time display that counts upward from zero.

Q3: What should engineers check before installing this timer?
The most important checks are the required supply voltage, socket type, panel cutout or mounting method, contact load, and control logic for reset or gate input.

Because the H5CN-YDN is an 8-pin contact-output model, the engineer should also confirm the wiring layout, verify that the controlled load stays within the relay rating, and make sure the selected version matches the machine’s available power source.

Q4: Is this timer suitable for direct output switching in industrial control circuits?
Yes, for many standard timing tasks. The published contact output rating is SPDT, 3 A at 250 VAC for resistive loads, which is suitable for many relay logic and control interface applications.

In practice, engineers should still consider inrush current, inductive load behavior, and external suppression when switching solenoids, contactors, or other reactive loads.

Q5: What makes the H5CN-YDN a practical replacement choice in existing equipment?
It offers a familiar miniature DIN-sized format, simple thumbwheel setting, clear LED display, and a straightforward ON-delay operating mode.

For maintenance teams, that combination is valuable because it reduces setup complexity and makes the timer easy to understand during service work, especially in older panels where a dedicated single-function timer is preferred over a more advanced multifunction unit.