Omron H7ET Series

H7ET
H7ET
6
C
onnections
J 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
or Open c ollector of an
NPN transi stor
or Open c ollector of an
NPN transi stor
Open col lector of a
PNP transistor
Open collector of a
PNP transistor
Input
Reset
Backlight
24 V DC
Backlight
24 V DC
2. Solid-state Input
Note: 1. Terminals 2 and 4 (input circuit and reset circuit) are
functionally isolated.
2. Select input transistors according to the following:
Dielectric strength of the collector ≧ 50 V
Leakage current < 1 µA