Omron H3CR-A Manual page 86

H3DR-A/P/M
Precautions
Changing of Setting
NOTICE:
Do not change the time unit, rated time, or operating
mode while the timer is in operation or malfunction could
result.
Mounting and Dismounting
The H3DR should be mounted as horizontally as possible.
When mounting the H3DR on a socket mounting track, hook portion
(A) of the Timer to an edge of the track first, and then depress the
Timer in the direction of (B).
When dismounting the H3DR, pull out portion (C) with a flat-blade
screwdriver and remove the Timer from the mounting track.
(C)
The H3DR can be mounted and dismounted with ease if a distance
of 30 mm or more is kept between the H3DR and other equipment.
86
(A)
(B)
30 mm min.
Rail stopper
Power Supplies
An AC power supply can be connected to the power input terminals
without regarding polarity. A DC power supply must be connected to
the power input terminals as designated according to the polarity of
the terminals.
A DC power supply can be connected if its ripple factor is 20% or
less and the mean voltage is within the rated operating voltage
range of the Timer.
Connect the power supply voltage through a relay or switch in such
a way that the voltage reaches a fixed value at once or the Timer
may not be reset or a timer error could result.
For the power supply of an input device, use an isolating transform-
er, of which the primary and secondary windings are mutually iso-
lated and the secondary winding is not grounded.
NPN Input Models
H3DR-A/-AS/-P
Input
terminal
Circuit
PNP Input Models
H3DR-AP/-ASP/-PP
Input
terminal
Circuit
For the H3DR-P/M, use a commercial power supply with a sine-
wave frequency of 50 or 60 Hz to supply 100 or 200 VAC.
If a different power supply is to be used, use the H3DR-Ajj.
Wiring
NPN Input Models
Incorrect
Power supply
AC or DC
Securely connect the power supply to terminals A
Do not apply input signals unless A
ply, otherwise the internal circuit of the Timer may be damaged due
to the high-tension voltage applied to the input terminals.
H3DR-A/P/M
Power supply
Isolation transformer is required.
Power supply
Isolation transformer is required.
Input terminal A
1
B , D , C
1 1 1
R, G, S
H3DR-A/-AS
/-P
A
2
and A .
1 2
is connected to the power sup-
2