Omron H3CR-A Manual page 87

H3DR-A/P/M
Input/Output
NPN Input Models
H3DR-A/-AS
Input terminal
L
**
D , C
1
G, S, R
Power supply
Input contact
AC or DC
An appropriate input is applied to the input signal terminals of the
Timer when one of the input terminals (terminals B
the common terminal (terminal A
cuited. Do not attempt to connect any input terminal to any terminal
other than the common terminal or to apply voltage across other
than the specified input and common terminals or the internal cir-
cuits of the Timer may be damaged.
* Power supply terminal A is a common terminal for the input sig-
2
nals (G, S, R) to the Timer. Never use terminal A
terminal for this purpose, otherwise the internal circuit of the Tim-
er may be damaged.
** Do not connect a relay or any other load between these two
points, otherwise the internal circuit of the Timer may be dam-
aged due to the high-tension voltage applied to the input termi-
nals.
H3DR-P
Input terminal
L
**
Input contact
Power supply
AC or DC
An appropriate input is applied to the input signal terminals of the
Timer when the input terminal (terminal C
nal (terminal A ) for the input signal are short-circuited. Do not at-
2
tempt to connect any input terminal to any terminal other than the
common terminal or to apply voltage across other than the specified
input and common terminals or the internal circuits of the Timer may
be damaged.
* Power supply terminal A is a common terminal for the input sig-
2
nals (S) to the Timer. Never use terminal A
minal for this purpose, otherwise the internal circuit of the Timer
may be damaged.
** Do not connect a relay or any other load between these two
points, otherwise the internal circuit of the Timer may be dam-
aged due to the high-tension voltage applied to the input termi-
nals.
A
1
, B
1 1
H3DR-A/-AS
*
A
2
, C , or D
1 1 1
) for the input signals are short-cir-
2
as the common
1
A
1
C
1
S
H3DR-P
A *
2
) and the common termi-
1
as the common ter-
1
PNP Input Models
H3DR-AP/-ASP
Power supply
AC or DC
Do not connect a relay or any other load between these two points,
otherwise the internal circuit of the Timer may be damaged due to
) and
the high-tension voltage applied to the input terminals.
All Models
Contact or transistor for
external input signal
Incorrect
Short-circuit
current
Correct
When connecting a relay or a transistor as an external signal input
device, pay attention to the following points to prevent short-circuit-
ing due to a sneak current to the transformerless power supply.
If a relay or transistor is connected to two or more Timers, the input
terminals of those Timers must be wired properly so that they will not
be different in phase or the terminals will be short-circuited to one
another (refer to the figures below).
H3DR-A/P/M
Input terminal
A
1
B , C , D
1 1 1
S, R, G
H3DR-AP/
H3DR-ASP
L
A
2
H3DR series timer
Input
terminal
Input
terminal
Input
terminal
Input
terminal
Power supply
Power supply
87