G3PA
14
Safety Precautions
■
Precautions for Correct Use
Please observe the following precautions to prevent failure to
operate, malfunction, or undesirable effect on product performance.
Load Connection
For an AC load, use a power supply rated at 50 or 60 Hz.
The maximum operating frequency is 10 Hz.
The G3PA-(VD) has a built-in varistor for overvoltage protection.
At a low applied voltage, such as 24 VAC, the load current is not fully
supplied. When the Unit is switched ON, the voltage required to
power the Unit deprives the output signal of the necessary voltage
level and thus creates loss time. The lower the load voltage is, the
greater the loss time is. This condition, however, will not create any
serious problems.
For a DC or L load, a diode should be connected in parallel the load
to absorb the counter electromotive force of the load.
When attaching a heat sink to the G3PA-(VD), in order to facilitate
heat dissipation, apply silicone grease or equivalent heat-conductive
grease on the heat sink. (Toshiba Silicone, Shinetsu Silicone, etc.)
Tighten the mounting screws of the heat sink with a torque of 0.78 to
0.98 N·m.
Noise Terminal Voltage according to
EN55011
The G3PA-(VD) complies with EN55011 standards when a capacitor
is connected to the load power supply as shown in the following
circuit diagram.
Recommended Capacitor: 1
µ
F, 250 VAC
Mounting
Loss time
SSR
Input
Load
Load power
supply
G3PA-(VD)
Output
Load
Input
DIN track
G3PA
G3PA
Panel
DIN track
Panel
The rated ambient
temperature is
40
°
C. (30
°
C for
400 V.)
Vertical mounting
Close mounting
Horizontal mounting
•
Screw or DIN track mounting is possible.
•
Vertical mounting should usually be used.
•
Close mounting cannot be used if the SSR is used at a 100% load
current. Leave a gap of at least 10 mm on the left and right of each
Unit.
•
Close mounting can be used under the following conditions:
1. Close mounting can be performed with no more than three SSRs
(For four or more SSRs, leave a gap of at least 10 mm.)
2. Use a load current of 80% or less (90% or less for the
G3PA-210B-VD, G3PA-220B-VD, or G3PA-240B-VD).
3. Leave a gap of at least 80 mm above and below the SSR.
4. Leave a gap of at least 60 mm from wiring ducts to the top of the
SSR and at least 30 mm from wiring ducts to the bottom of the SSR.
•
With vertical mounting, reduce the load current by 30%.
(Refer to the
Load Current vs. Ambient Temperature
graph.)
80 mm
Note:
Leave a distance of 60 mm min. between SSRs and ducts (especially above the SSR).
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