H7E@-N@P
Solid State Input
Input Connections
Open-collector Transistor Input
Input Connection Contact Input
H7E@-N@P
Relay
Relay
H7E@-N@P
Reset input
Count/Timer input
Reset input
Or
Count/Timer input
Or
TTL or C-MOS IC Input
TTL or C-MOS IC
TTL or C-MOS IC
H7E@-N@P
When the H7EC-NP is used, relay chattering may be counted. Use
the H7EC-NLP, one of the low-speed input models.
Reset input
Count/Timer input
Use a transistor for input that satisfies the following conditions:
Collector breakdown voltage ≥ 50 V
Leakage current < 1 µA
Use a diode (D) having a forward voltage as small as possible (0.1 V
max. at IF of 20 µA).
Operation
■ Operating Modes
H7EC Total Counter
H7ET Time Counter
Incrementing Operation
(Up)
Incrementing Operation
(Up)
Reset
Reset
Timer input
Count input
Full-scale
(Full-scale
−1)
Internal clock
timer value
Full-scale
(Full-scale
−0.1
Counting display values
Timer display values
25