C-18 Self-powered Time Counter H7ET
Specifications
■ General
Note: 1. Only PNP/NPN universal DC voltage input models (-H models) have a backlight.
2. “-hours”, “-d-h”, “-h-m”, and “-h-m-s” labels are included.
■ Ratings
Item H7ET-NV-@
H7ET-NV-@H
H7ET-NFV-@ H7ET-N-@ H7ET-NV1-@
H7ET-NV1-@H
H7ET-NFV1-@ H7ET-N1-@
Operating mode Accumulating
Mounting method Flush mounting
External connections Screw terminals
Reset External/Manual reset
Display 7-segment LCD with or without backlight, zero suppression (character height: 8.6 mm) (see note 1)
Number of digits 7
Time range 0.0h to 999999.9h ←→ 0.0h to 3999d23.9h
(switchable with switch)
0s to 999h59min59s ←→ 0.0min to 9999h59.9min
(switchable with switch)
Timer input PNP/NPN univer-
sal DC voltage in-
put
AC/DC multi-volt-
age input
No-voltage input PNP/NPN univer-
sal DC voltage in-
put
AC/DC multi-volt-
age input
No-voltage input
Case color Light gray or black (-B models)
Attachment Waterproof packing, flush mounting bracket, time unit labels (see note 2)
Approved standard UL863, CSA C22.2 No.14, Lloyds
Conforms to EN61010-1/IEC61010-1 (pollution degree2/overvoltage category III)
Conforms to VDE0106/P100
Item H7ET-NV@-@
H7ET-NV@-@H
H7ET-NFV@-@ H7ET-N@-@
Supply voltage Backlight model: 24 VDC (0.3 W max.)
(for backlight)
No-backlight model: Not required (pow-
ered by built-in battery)
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 kΩ)
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 kΩ max.
Short-circuit residual voltage: 0.5 V max.
Minimum open impedance: 750 kΩ min.
Reset input No voltage input
Maximum short-circuit impedance:
10 kΩ max.
Short-circuit residual voltage: 0.5 V max.
Minimum open impedance: 750 kΩ min.
Minimum pulse
width
1 s
Reset system External reset and manual reset: Minimum signal width of 20 ms
Terminal screw
tightening torque
0.98 N·m max.
Ambient tempera-
ture
Operating: -10°C to 55°C (with no condensation or icing)
Storage: -25°C to 65°C (with no condensation or icing)
Ambient humidity Operating: 25% to 85%
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