H7ET-NV-B Omron, H7ET-NV-B Datasheet - Page 25
![COUNTER TIME 999KHRS DC INPUT](/photos/6/44/64469/h7et-nv-b_sml.jpg)
H7ET-NV-B
Manufacturer Part Number
H7ET-NV-B
Description
COUNTER TIME 999KHRS DC INPUT
Manufacturer
Omron
Series
H7ETr
Specifications of H7ET-NV-B
Operating Mode
Accumulative
Output Type
None
Voltage - Supply
None Required (Battery Included)
Termination Style
Screw Terminal
Display Type
LCD Non-Backlit
Timing Range
999999.9 h, 3999 d 23.9 h
Supply Voltage
4.5 V to 30 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
H7ET-BV
H7ETNVB
Z872
H7ETNVB
Z872
Input Connections
Input Connection Contact Input
When the H7EC-NP is used, relay chattering may be counted. Use
the H7EC-NLP, one of the low-speed input models.
Operation
■ Operating Modes
H7EC Total Counter
Incrementing Operation
(Up)
Counting display values
Relay
Count input
Reset
Or
Reset input
H7E@-N@P
(Full-scale
−1)
Count/Timer input
Full-scale
Or
Relay
H7ET Time Counter
Incrementing Operation
(Up)
Solid State Input
Use a transistor for input that satisfies the following conditions:
Use a diode (D) having a forward voltage as small as possible (0.1 V
max. at I
TTL or C-MOS IC Input
Open-collector Transistor Input
TTL or C-MOS IC
Timer display values
Collector breakdown voltage ≥ 50 V
Leakage current < 1 µA
Reset input
Internal clock
timer value
F
Timer input
of 20 µA).
Reset
H7E@-N@P
Reset input
Count/Timer input
H7E@-N@P
Count/Timer input
(Full-scale
−0.1
Full-scale
H7E@-N@P
TTL or C-MOS IC
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