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Omron H7EC-N-B Counter

The Omron H7EC-N-B Counter is a no-voltage input totalizer offering fast 30 Hz to 1 kHz counting for precise monitoring across an 8-digit range. It features a clear LCD, sturdy IP66-rated front, and strong resistance to noise, shock, and vibration. With external and manual reset support, it integrates easily into compact panels requiring stable, maintenance-free counting. Engineered for durability, it performs reliably in diverse industrial environments. Manufactured by Omron and included within Omron Counter solutions, this Omron H7EC Series ensures long-term digital totalizing accuracy.

BrandOmron
ProductCounters
Model NumberH7EC-N-B

Omron H7EC-N-B Counter - Technical Specifications

SpecificationValue
FunctionTotal Counter
Count range0 to 99999999
Max. counting speed30 Hz/1 kHz (switching) (ON/OFF ratio 1:1)
Minimum input signal width30 Hz: 16.7 ms 1 kHz: 0.5 ms
Reset systemExternal and manual reset
Input signalCount input, Reset
No-voltage input (Contact input)Short-circuit (ON) impedance: 10 kΩ max. Residual voltage: 0.5 V max. (Actual performance 1.0 V) Open circuit impedance: 750 kΩ min.
Display methodLCD
Display Digits8 digit
External connectionsScrew terminal
Input modeNo-voltage input
External/Manual Reset time20 ms
Ambient temperature (Storage)-10 to 55 ℃ (with no freezing or condensation)
Ambient humidity (Operating)25 to 85 %
Dielectric withstand voltageBetween current carrying terminals and exposed non-current carrying metal parts: 1000 VAC 50/60 Hz 1 min
Impulse withstand voltageBetween current carrying terminals and exposed non-current carrying metal parts: 4.5 kV
Noise immunityBetween count input terminals: ±500 V Between reset terminals: ±500 V square-wave noise by noise simulator (pulse width: 100 ns/1 µs, 1-ns rise)
Static immunity±8 kV (malfunction)
Vibration resistanceBetween current carrying terminals and exposed non-current carrying metal parts: 100 MΩ min. (at 500 VDC)
Shock resistanceDestruction: 300 m/s2, 3 times each in 6 directions Malfunction: 200 m/s2, 3 times each in 6 directions
Degree of protectionCase front: IP66, NEMA 4 (indoors), and UL Type 4X (indoors)
Case colorLight gray (Munsell 5Y7/1)
WeightApprox. 60 g