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 k
Ω
)
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
Ω
max.
Short-circuit residual voltage: 0.5 V max.
Minimum open impedance: 750 k
Ω
min.
Reset input
No voltage input
Maximum short-circuit impedance:
10 k
Ω
max.
Short-circuit residual voltage: 0.5 V max.
Minimum open impedance: 750 k
Ω
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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