Omron H7EC - Connections

C-20
Self-powered Time Counter
H7ET
Connections
■
Terminal Arrangement
Bottom view: View of the Time Counter rotated horizontally 180
°
■
Connections
H7ET Time Counter
Note: 1.
Terminals 2 and 4 (input circuit and reset circuit) are func-
tionally isolated.
2.
Select input transistors according to the following:
Dielectric strength of the collector
≥
50 V
Leakage current < 1
µ
A
Backlight Model No-backlight Model
Backlight
24 VDC
Timer
input
Reset
input
Timer
input
Reset
input
PNP/NPN Universal DC Voltage Input Model With Backlight
1. Contact Input (Input by a Relay or Switch Contact)
Relay
Input
Reset
Relay
or Switch or Switch
Input
Reset
2. Solid-state Input
Backlight
24 VDC
Open collector of a
PNP transistor
Open collector of a
PNP transistor
Backlight
24 VDC
or Open collector of an
NPN transistor
or Open collector of an
NPN transistor