H7E
@-N@P
25
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.
Solid State Input
Use a transistor for input that satisfies the following conditions:
Collector breakdown voltage
≥
50 V
Leakage current < 1
µ
A
Use a diode (D) having a forward voltage as small as possible (0.1 V
max. at I
F
of 20
µ
A).
Operation
■
Operating Modes
Reset input
Count/Timer input
Or
Or
H7E
@
-N
@
P
Relay
Relay
Open-collector Transistor Input
Reset input
Count/Timer input
H7E
@
-N
@
P
TTL or C-MOS IC Input
Reset input
Count/Timer input
TTL or C-MOS IC
TTL or C-MOS IC
H7E
@
-N
@
P
H7EC Total Counter
H7ET Time Counter
Reset
Counting display values
Full-scale
Count input
Full-scale
Reset
Timer input
Timer display values
Incrementing Operation
(Up)
(Full-scale
−
1)
Incrementing Operation
(Up)
Internal clock
timer value
(Full-scale
−
0.1
