Self--powered Time Counter H7ET Subminiature Time Counters With Enhanced Appearance and Features Large display with 8.6 mm (0.338 in) height Available with backlit LCD PNP/NPN DC voltage input available Sevendigits, time range0to 3999d23.9h Key-protect switch to prevent front resetting Selectable time range: 999999.9h or 3999d23.9h and 999h59m59s or 9999h59.9m NEMA 4/IP66 front Replaceable battery New black case Ordering Information TIME COUNTERS Count input Displayy Time range 999999.9h or 3999d23.9h (selectable) 999h59m59s or 9999h59.9m (selectable) PNP/NPN universal DC 7-segment LCD H7ET-NV-BH H7ET-NV1-BH vvoollttageage iinputn ut with backlight 7-segment LCD H7ET-NV-B H7ET-NV1-B AC/DC multi-voltage input 7-segment LCD H7ET-NFV-B H7ET-NFV1-B No-voltage input 7-segment LCD H7ET-N-B H7ET-N1-B MODEL NUMBER LEGEND H7ET - N - 12 3 4 1. Count Input 3. Case Color None: No-voltage input B: Black V: PNP/NPN universal DC voltage input FV: AC/DC multi-voltage input 4. Display 2. Time Range None: 7-segment LCD without backlight None: 999999.9h/3999d23.9h 1: 999h59m59s/9999h59.9m H: 7-segment LCD with backlightH7ET H7ET ACCESSORIES (ORDER SEPARATELY) Item Part number Replacement Battery Y92S-36 Wire-wrap Terminal (set of two terminals) Y92S-37 Flush Mountingg Adapter 26 mm 45 mm Y92F-75 Y92F-77B 24.8 mm 48.8 mm Specifications GENERAL Item H7ET-NV-B H7ET-NFV-B H7ET-N-B H7ET-NV1-B H7ET-NFV1-B H7ET-N1-B H7ET-NV-BH H7ET-NV1-BH Operating mode UP type Mounting method Flush mounting External connections Screw terminals, optioinal wire--wrap terminals (See Note 3.) Reset External/Manual reset Display 7-segment LCD with or without backlight (character height: 8.6 mm) (See Note 1.) Number of digits 7 Time range 0.0h to 999999.9h or 0.0h to 3999d23.9h (switchable 0s to 999h59m59s or 0.0m to 9999h59.9m with switch) (switchable with switch) Count input PNP/NPN AC/DC No-voltage PNP/NPN AC/DC No-voltage universal DC multi-voltage input universal DC multi-voltage input voltage input input voltage input input Case color Black Attachment Waterproof packing, flush mounting bracket, time unit labels (See Note 2.) Approved standard UL508, CSA C22.2 No.14, Lloyds Conforms to EN61010-1/IEC61010-1 (pollution degree2/overvoltage category ) Conforms to VDE0106/P100 Note: 1. Only PNP/NPN universal DC voltage input models (-H models) are available with a backlight. 2. -hours, -d-h, -h-m, and -h-m-s labels are included. 3. wire--wrap terminals (Y925--37) can be ordered separately RATINGS Item H7ET-NV -B, H7ET-NV -BH H7ET-NFV -B H7ET-N -B Supply voltage Backlight model: 24 VDC (for Not required (powered by battery) backlight) No-backlight model: Not required (powered by battery) High (logic) level: 4.5 to 30 VDC No voltage input Count input High (logic) level: 24 to 240 VAC/ Low (logic) level: 0 to 2 VDC Maximum short-circuit impedance: VDC, 50/60 Hz (Input impedance: Approx. 4.7 k) Low (logic) level: 0 to 2.4 VAC/ 10 k max. VDC, 50/60 Hz Short-circuit residual voltage:g 0.5 V max. Reset input No voltage input Minimum open impedance: 750 k Maximum short-circuit impedance: min. 10 k max. Short-circuit residual voltage: 0.5 V max. Minimum open impedance: 750 k min. Minimum pulse width 1s Reset system External reset and manual reset: Minimum signal width of 20 ms Terminal screw 0.98 N mmax. tightening torque Ambient temperature Operating: --10Cto55C (with no condensation or icing) Storage: --25Cto65C (with no condensation or icing) Ambient humidity Operating: 25% to 85% 2