Omron H3DE-M2 Manual page 12

H3DE
J POWER SUPPLIES
The H3DE Series is provided with a transformerless power
supply system. An electric shock may be received if the input
terminal or the output type selector switch is touched while power
is being supplied.
Use the bar terminal for wiring the H3DE. Using a stranded-wire
terminal may cause a short-circuit due to a stray wire entering
into the Timer.
Both AC and DC power supplies can be connected to the power
input terminals without regarding polarity.
With the H3DE only, 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
transformer, of which the primary and secondary windings are
mutually isolated and the secondary winding is not grounded.
A1
B1
H3DE
Start
input
A2
Circuit
Power supply
Isolation transformer is required.
J MOUNTING CLEARANCE
If the load current is continuously being supplied to the Timer for
a long period of time, be sure to provide the mounting clearance
as shown in the figure below. If used under the conditions other
than those specified below, the life of internal components may
be shortened due to an excessive rise in the internal
temperature.
H3DE H3DE
t
t: Mounting clearance (mm)
J SWITCHING CURRENT VS.
AMBIENT TEMPERATURE
(WHEN MOUNTING TWO OR MORE
H3DE UNITS SIDE-BY-SIDE)
70
60
50
40
30
20
0 1 2 3
Note: Measurement Condition: Input voltage of 230 VAC.
H3DE
H3DE
DIN track
t
Mounting clearance:
50 mm min.
Mounting
clearance: 10 mm
Maximum range of
operating ambient
temperature
Mounting
clearance: 5 mm
Mounting
clearance: 0 mm
Load current (A)
4 5