The Omron H7CX-AWSD-N, also cataloged as the H7CX-AWSD Multifunction Counter/Tachometer, operates as a dedicated hardware component for dual-stage pulse accumulation and solid-state limit switching within 12 to 24 VDC control circuits.

Nomenclature & System Part Matrix

• H7CX: Omron 48 mm x 48 mm DIN digital counter and tachometer base platform.
• A: Standard functionality classification preset.
• W: Dual-stage preset limit switching configuration.
• S: Solid-state transistor switching output profile.
• D: Low-voltage DC operating power input (12 to 24 VDC / 24 VAC).
• Digits (None): 6-digit negative transmissive LCD interface (-99999 to 999999 count range).
• External Connections (None): Integrated rear M3.5 screw terminal block layout.
• N: Modernized housing architecture featuring short-body installation depth and high-contrast display optics.

Electrical & Physical Specifications

Signal Architecture & Firmware Flash Compatibility

The high-speed processor core processes incoming quadrature or single-channel pulses up to 10 kHz without missing counts. Onboard EEPROM non-volatile memory ensures firmware flash compatibility across configuration cycles, locking user pre-scaling parameters, dual-stage limit thresholds, and count totals during complete DC supply interruptions. Internal power-up self-diagnostics validate parameter registers prior to driving output transistors, eliminating false state triggers during low-voltage ramp transitions.

Ordering Information & Deliverables

• 1 x Omron H7CX-AWSD-N Counter/Tachometer Unit
• 1 x Panel Mounting Adapter Bracket
• 1 x Waterproof Front Sealing Gasket

Mounting Rules & Terminal Wiring Guidelines

Panel Door Assembly

• Cut a standard 45 mm x 45 mm square opening in the enclosure door; fit the rubber gasket over the front housing bezel before inserting to ensure IP66 water and dust protection.
• Push the chassis through the front cutout and slide the rear mounting clamp forward until its locking tabs engage firmly against the door interior.

Field Wiring Procedures

• Secure power and signal conductors to the rear M3.5 screw terminals using insulated crimp lugs; tighten terminal screws to a torque of 0.5 N-m.
• Route high-speed input leads from NPN/PNP proximity switches or rotary encoders in shielded twisted-pair cables, grounding the braid shield at a single panel earth reference.

Frequently Asked Questions

• What supply voltage range is required to power the H7CX-AWSD-N?

  The unit operates on low-voltage DC or AC control power rated at 12 to 24 VDC or 24 VAC (50/60 Hz).

• What function does the W designation perform in the part code?

  The W designation specifies a dual-stage preset counter configuration, allowing two distinct output switching thresholds during counting operations.

• What output load capacity is provided by the solid-state switching circuit?

  The NPN/PNP transistor outputs support switching voltages up to 30 VDC at a maximum continuous load current of 100 mA.

• How are register contents saved when DC supply power is removed?

  Internal EEPROM non-volatile memory preserves count registers, scale factors, and threshold limits indefinitely without battery assistance.

• What display count limits are supported on the front LCD panel?

  The 6-digit negative transmissive LCD screen displays process values ranging from -99999 to 999999 with configurable decimal positions.

• How is environmental ingress protection achieved on panel doors?

  Installing the unit with the included rubber sealing gasket creates an IP66 water-resistant and dust-tight front bezel seal.

• What terminal style is integrated into the rear housing?

  The unit incorporates standard M3.5 screw terminal blocks for direct conductor termination without requiring external mounting sockets.

• Can the counter input be configured for both NPN and PNP sensor logic?

  Yes, the input terminal parameters can be set via software to accept either NPN open-collector or PNP voltage signals.