Omron

Omron H7CX-A4WSD-N H7CX Series Multifunction Counter/Tachometer

SKU H7CX-A4WSD-N

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Omron

  • Product No.: H7CX-A4WSD-N

  • Country of origin:Japan

  • Product Type: Multifunction Counters

  • Payment: T/T, Western Union

  • Weight: 2000g

  • Dimensions: 10.0 cm x 8.0 cm x 8.0 cm

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

Operational efficiency in industrial staging and counting is optimized by the Omron H7CX-A4WSD-N, a highly configurable 4-digit multifunction digital counter and tachometer designed for precise automation control. This unit features a dual-stage transistor preset configuration and operates on low-voltage DC power, making it an excellent fit for dynamic control systems requiring rapid switching times and reliable visual feedback. Featuring a negative transmissive LCD with programmable color-change alerts, operators can instantly verify process status from a distance.

Features

  • Multifunctional Operation: Configurable as a 1-stage counter, 2-stage counter, total preset counter, batch counter, dual counter, or tachometer.
  • High-Visibility Display: 4-digit negative transmissive LCD with red/green backlight, supporting dynamic color changes based on output states.
  • Low-Depth Design: Reduced housing depth facilitates installation in shallow electrical enclosures and compact control panels.
  • Selectable Input Speeds: Highly sensitive pulse detection adjustable between 30 Hz and 5 kHz to accommodate mechanical contacts and electronic sensors.
  • Flexible Input Logic: Software-selectable NPN (sinking) or PNP (sourcing) input modes.

Applications

  • High-Speed Packaging Lines: Precise batch counting, continuous sorting, and cut-to-length processes.
  • Rotational Speed Monitoring: Operational speed tracking of conveyor belts, pulleys, and motor shafts in tachometer mode.
  • Cycle Count Tracking: Monitoring wear cycles and tool operations on presses, stampers, and automated assembly equipment.

Technical Specifications

Parameter Specification
Manufacturer Omron Industrial Automation
Model Number H7CX-A4WSD-N
Supply Voltage 12 to 24 VDC (allowable ripple: 20% max.)
Power Consumption Approx. 3.3 W at 24 VDC
Number of Digits 4 digits (-999 to 9999)
Configuration 2-stage setting
Output Type Transistor output (NPN/PNP open collector, 30 VDC max., 100 mA max.)
Max. Counting Speed 30 Hz or 5 kHz (selectable; minimum pulse width 16.7 ms or 0.1 ms)
Memory Backup EEPROM (100,000 overwrites min., 10-year data retention)
Connection Method M3.5 Screw terminals
Ambient Operating Temperature -10 to 55 degC (with no icing or condensation)
Country of Origin Japan
Shipping Weight (Calculated) 0.25 kg
Package Dimensions (Calculated) 10.0 cm x 8.0 cm x 8.0 cm

Empirical Engineering Insights

Alternative Models & Compatibility

The Omron H7CX-A4WSD-N is the direct, updated replacement for the legacy H7CX-A4WSD (non-N suffix) model. This updated variant features a significantly shorter housing depth (59 mm compared to 78 mm), making it highly compatible with modern, space-constrained enclosures. Existing wiring configurations and terminal designations remain identical, facilitating a seamless drop-in replacement process.

Application Pitfalls & Engineering Notes

The integrated transistor control outputs are rated strictly for DC operations (30 VDC, 100 mA maximum). Connecting AC inductive loads directly to these terminals will result in permanent semiconductor failure. When driving external DC relays or solenoid coils, an external flyback diode must be installed across the load to suppress back-EMF spikes. Additionally, the unit is rated for 12 to 24 VDC; verify that power supply ripple does not exceed 20% to prevent erratic display behavior or micro-reset events.

Commissioning & Wiring Tips

Always configure the input mode setting (sinking vs. sourcing) in the function parameter menu prior to connecting your sensors. An incorrect input logic configuration will prevent the unit from registering input pulses even if the physical sensor is functioning correctly. To minimize high-frequency electromagnetic interference, route all signal input lines (CP1, CP2, and Reset) in a separate grounded metal conduit away from high-current AC power cables.

Installation Guidelines

CRITICAL WARNING

Isolate and lock out all external power sources before executing terminal connections. Operating or servicing this instrument while power is applied poses a risk of electrical shock and potential damage to internal logic circuits. Allow any residual system capacitance to discharge completely before starting work.

1

Prepare a standard DIN 48 x 48 mm panel cutout. Insert the counter unit through the panel front and secure it tightly using the provided mounting adapter from the rear.

2

Perform terminal wiring utilizing M3.5 crimp terminals. Ensure the DC power connections are made to the designated positive and negative terminal positions with correct polarity.

3

Apply input power and access the parameter settings menu to verify the desired configuration mode (Counter vs. Tachometer) and input speed limit (30 Hz/5 kHz) match system constraints.

FAQ

Can this unit be powered by an AC power supply?

No. The unit operates strictly on a DC voltage range of 12 to 24 VDC. Applying AC voltage will permanently damage the internal circuits.

How do I toggle the input logic between NPN and PNP?

The input logic (sinking vs. sourcing) is set via the configuration menu. You must adjust the input selection parameter within the internal program mode before connecting field wiring.

What is the difference between the H7CX-A4WSD-N and the older H7CX-A4WSD?

The -N model features an upgraded, shorter housing depth of 59 mm (compared to 78 mm) and improved display character height and brightness for better visibility.

What happens to the current count value if supply power is lost?

The unit features an integrated EEPROM memory backup. It automatically saves configurations and current counts, retaining data for up to 10 years without power.

View all FAQs →

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  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
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  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Japan

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