H7ET Totalisers Self-powered time counter The H7E series is available with large display with 8.6 mm character height. It includes models with backlight for improved visibility in dimly lit places. The H7E family includes total counters, time counters, tachometers and PCB mounted counters. • Size in mm (H×W×D) 24×48×55.5, 1/32 DIN size housing • 7 digits, 8.6 mm character height • Black or light-grey housing • Dual time range 999999.9 h <-> 3999 d 23.9 h or 999 h 59 m 59 s <-> 9999 h 59.9m Ordering information Timer input Display Order code Time range 999999.9h <-> 3999d23.9h (switchable) Time range 999h59m59s <-> 9999h59.9m Light grey body Black body Light grey body Black body No-voltage input 7-segment LCD H7ET-N H7ET-N-B H7ET-N1 H7ET-N1-B PNP/NPN universal DC voltage input 7-segment LCD H7ET-NV H7ET-NV-B H7ET-NV1 H7ET-NV1-B 7-segment LCD with backlight H7ET-NV-H H7ET-NV-BH H7ET-NV1-H H7ET-NV1-BH AC/DC multi-voltage input 7-segment LCD H7ET-NFV H7ET-NFV-B H7ET-NFV1 H7ET-NFV1-B Specifications Item H7ET-NV_-_/H7ET-NV_-_H H7ET-NFV_-_ H7ET-N_-_ Operating mode Accumulating Mounting method Flush mounting External connections Screw terminals Display 7-segment LCD with or without backlight, zero suppression (character height: 8.6 mm) Number of digits 7 Case color Light grey or black (-B models) Attachment Waterproof packing, flush mounting bracket, time unit labels Supply voltage Backlight model: 24 VDC (0.3 W max.) (for backlight) No-backlight model: Not required (powered by built-in battery) Timer input High (logic) level: 4.5 to 30 VDC Low (logic) level: 0 to 2 VDC (Input impedance: Approx. 4.7 k) Not required (powered by built-in battery) High (logic) level: 24 to 240 VAC/VDC, 50/60 Hz Low (logic) level: 0 to 2.4 VAC/VDC, 50/60 Hz No voltage input Maximum short-circuit impedance: 10 k max. Short-circuit residual voltage: 0.5 V max. Reset input No voltage input Maximum short-circuit impedance: 10 k max. Short-circuit residual voltage: 0.5 V max. Minimum open impedance: 750 k min. Minimum open impedance: 750 k min. Minimum pulse width 1 s Reset system External reset and manual reset: Minimum signal width of 20 ms Ambient temperature Operating: –10 to 55°C (with no condensation or icing), storage: –25 to 65°C (with no condensation or icing) Time accuracy ±100 ppm (25°C) Degree of protection Front-panel: IP66, NEMA4 with waterproof packing, terminal block: IP20 Battery life (reference) 10 years min. with continuous input at 25°C (lithium battery) Size in mm (H×W×D) 24×48×55.5 569
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