OMRON H8GN-AD Preset Counter Timer

Overview

OMRON H8GN-AD is a compact 48×24mm preset counter and timer unit from the OMRON H8GN series. OMRON H8GN-AD supports switching between counter mode and timer mode, provides 4-digit preset value display and 8-digit total count display, and stores parameter data in non-volatile memory. This OMRON H8GN-AD is widely stocked as spare counting and timing unit for machine automation assemblies.

Features

OMRON H8GN-AD integrates dual function of preset counter and timer, users can select operation mode via front panel keys. Counter mode supports increment, decrement, individual and quadrature input, with prescale function for unit conversion. Timer mode supports adjustable flicker duty cycle for cyclic sequence control. H8GN-AD can store four groups of preset values for quick switching on site. It adopts LCD dual-color display, red for present value and green for set value. It has non-volatile EEPROM memory to retain count data and setting parameters after power loss. The front panel meets NEMA4X and IP66 waterproof rating, suitable for dusty and splash workshop environments. This unit is powered by 24VDC, equipped with screw terminal wiring. It complies with UL, CSA, IEC and CE standards. It is discontinued by manufacturer and still circulating as maintenance spare part. It is designed for 24/7 continuous operation on packaging machines, conveyor lines, textile machinery and test equipment.

Specifications

OMRON H8GN-AD Preset Counter Timer Brand: OMRON Model: H8GN-AD Type: preset counter and timer Dimensions W × H × D: 48 × 24 × 83 mm Supply voltage: 24 VDC Power consumption: max 1.5 W Display: 7-segment LCD, PV 4 digits, SV 4 digits, total count 8 digits Input modes: increment, decrement, individual, quadrature Counting speed: 30 Hz Memory: EEPROM, 100,000 write cycles Output modes: N, F, C, K selectable Protection class: IP66 front panel Ambient temperature: -10 ℃ ~ +55 ℃ Approvals: CE, UL, CSA, IEC Status: discontinued legacy spare

Principle

OMRON H8GN-AD receives pulse input from proximity sensors or limit switches. This Preset Counter Timer accumulates pulse quantity and compares present value with preset value. When the value reaches setpoint, the internal relay output changes state. Under timer mode, the unit starts timing after receiving start signal and triggers output when time elapses. All parameters and total count data are saved in EEPROM for power-off retention.

Applications

OMRON H8GN-AD is deployed in packaging machine counting control, conveyor product counting, textile machine timing sequence, test bench cycle control and automatic feeding equipment. It handles production quantity counting and fixed cycle timing. OMRON H8GN-AD is stocked as spare preset counter timer for industrial automation assemblies.