03/06/2020 H7ET-NFV OMRON Industrial Automation Print Global Self-powered Totalizer H7ET-NFV Time Counter, 48 mm x 24 mm x 55.5 mm, 7 digit, 0.0 h to 999999.9 h/0.0 h to 3999 d 23.9 h (selectable), Free voltage input, Light gray Digits 7 digit External connection method Screw terminal Mounting method Flush mounting Image Ratings/Specifications As of February 27, 2020 Function Time Counter Time ranges Increment Time ranges 0.0 h to 999999.9 h/0.0 h to 3999 d 23.9 h (selectable) Set value read 100 ppm (25 ) Time selector counter Minimum signal 1 s input width Reset system External and manual reset Input signal Count input, Reset Input method Free voltage input Input Hight level: 24 to 240 VAC/VDC Voltage input Low level: 0 to 2.4 VAC/VDC External reset 20 ms Reset time Manual reset 20 ms Display method LCD Digits 7 digit Display Character height 8.6 mm Zero suppression Equipped Key protection Key protect Switch Ambient temperature -10 to 55 (with no freezing or condensation) (Operating) Ambient temperature (Storage) -25 to 65 (with no freezing or condensation) Ambient humidity (Operating) 25 to 85% Insulation resistance Between current carrying terminals and exposed non-current carrying metal parts: 100 M min. (at 500 VDC) www.ia.omron.com/product/item/4379/ ga=2.51880233.1626599862.1591162539-861876939.1584956215 print=true 1/403/06/2020 H7ET-NFV OMRON Industrial Automation Between timer input terminals and reset terminals: 100 M min. (at 500 VDC) Between reset terminals and exposed non-current-carrying metal parts: 2200 VAC 50/60 Hz 1 min Dielectric withstand voltage Between timer input terminals and exposed non-current-carrying metal parts: 3700 VAC 50/60 Hz 1 min Between timer input terminals and reset terminals: 2200 VAC 50/60 Hz 1 min Between current carrying terminals and exposed non-current carrying metal parts: Impulse withstand voltage 4.5 kV Between timer input terminals and reset terminals: 3 kV Between reset terminals: 500 V Noise immunity Between timer input terminals: 1.5 kV square-wave noise by noise simulator (pulse width: 100 ns/1 s, 1-ns rise) Static immunity 8 kV (malfunction) Destruction: 10 to 55 Hz, 0.375 mm single amplitude each in 3 directions for 2 h Vibration resistance Malfunction: 10 to 55 Hz, 0.15 mm single amplitude each in 3 directions for 10 min Destruction: 300 m/s**2, 3 times each in 6 directions Shock resistance Malfunction: 200 m/s**2, 3 times each in 6 directions Degree of protection Case front: IP66, NEMA 4 (indoors), and UL Type 4X (indoors) External connection method Screw terminal Case color Light gray (Munsell 5Y7/1) Accessories Flush mounting adapter, Lithium Battery (3 V), Waterproof packing, Unit label Weight Approx. 60 g As of February 27, 2020 Dimensions As of February 27, 2020 www.ia.omron.com/product/item/4379/ ga=2.51880233.1626599862.1591162539-861876939.1584956215 print=true 2/4