The Omron H7ET-NV1-BH Counter features a backlit LCD for superior readability in dim or enclosed installations, ensuring clear long-duration time tracking. It supports DC voltage input from 4.5 to 30 VDC and provides extensive timing ranges up to 999999.9 hours or 3999 days 23.9 hours. With a stable 20 ms reset response and strong EMC, shock, and vibration resistance, it performs reliably in industrial environments. Its IP66 front protection enhances durability. Manufactured by Omron and positioned under Omron Counter solutions, this unit is part of the Omron H7ET Series.
0.0 h to 999999.9 h/0.0 h to 3999 d 23.9 h (selectable)
Time counter Set value read selector
Β±100 ppm (25 β)
External/Manual Reset time
20 ms
Ambient temperature (Storage)
-10 to 55 β (with no freezing or condensation)
Ambient humidity (Operating)
25 to 85 %
Dielectric withstand voltage
Between current carrying terminals and exposed non-current carrying metal parts: 1000 VAC 50/60 Hz 1 min
Between backlight power terminals and timer input/reset terminals: 1000 VAC 50/60 Hz 1 min
Impulse withstand voltage
Between current carrying terminals and exposed non-current carrying metal parts: 4.5 kV
Noise immunity
Between reset terminals: Β±600 V
Between backlight power terminals: Β±480 V
Between timer input terminals: Β±600 V
square-wave noise by noise simulator (pulse width: 100 ns/1 Β΅s, 1-ns rise)
