H3DR-A/P/M
H3DR-A/P/M
86
Precautions
Changing of Setting
NOTICE:
Do not change the time unit, rated time, or operating
modewhilethetimerisin operationormalfunctioncould
result.
Mounting and Dismounting
The H3DR should be mounted as horizontally as possible.
Whenmountingthe H3DR on asocket mountingtrack, hookportion
(A) of the Timer to an edge of the track first, and then depress the
Timer in the direction of (B).
(A)
(B)
When dismounting the H3DR, pull out portion (C) with a flat-blade
screwdriver and remove the Timer from the mounting track.
(C)
30 mm min.
Rail stopper
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.
Power Supplies
An AC power supply can be connected to the power input terminals
without regarding polarity.ADCpowersupply mustbe connectedto
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 powersupply 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 ofan 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
Power supply
Circuit
Isolation transformer is required.
Rectifier circuit
PNP Input Models
H3DR-AP/-ASP/-PP
Input
terminal
Power supply
Circuit
Rectifier circuit
Isolation transformer is required.
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-A
jj
.
Wiring
NPN Input Models
B
1
,D
1
,C
1
R, G, S
Input terminal
H3DR-A/-AS
/-P
A
1
Power supply
AC or DC
Incorrect
A
2
Securely connect the power supply to terminals A
1
and A
2
.
Do not apply input signals unless A
2
is connected to the power sup-
ply, otherwise the internal circuit of the Timer may be damaged due
to the high-tension voltage applied to the input terminals.