Omron H7E Manual page 15

PNP/NPN Universal DC Voltage Input Model Without Backlight
1. Contact Input (Input by a Relay or Switch Contact)
Relay
Input
Reset
or Switch
2. Solid-state Input
Open collector of a
PNP transistor
Input
Reset
or Open collector of an
NPN transistor
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
Leakage current < 1 A
AC/DC Multi-voltage Input Model
Relay
Reset
Input
or Switch
Relay Relay
or Switch
Open collector of a
PNP transistor
or Open collector of an
NPN transistor
50 V
Relay
or Switch
or Open collector of
an NPN transistor
No-voltage Input Model
1. Contact Input (Input by a Relay or Switch Contact)
Relay
Input Reset
Terminals 2 and 4 are
internally connected.
or Switch
Note: Use Relays and Switches that have high contact relia-
bility because the current flowing from terminals 1 or
3 is as small as approx. 10 A. It is recommended
that OMRON's G3TA-IA/ID be used as the SSR.
2. Solid-state Input
(Open Collector Input of an NPN Transistor)
Open collector of an
NPN transistor
Input
Reset
Terminals 2 and 4 are
internally connected.
Note: 1. Residual voltage in the output section of Proximity
Sensors or Photoelectric Sensors becomes less
than 0.5 V because the current flowing from termi-
nals 1 or 3 is as small as approx. 10 A, thus allow-
ing easy connection.
2. Select input transistors according to the following:
Dielectric strength of the collector
Leakage current < 1 A
Self-powered Time Counter
Relay
or Switch
Open collector of an
NPN transistor
or Switch
50 V
H7ET
C-21