Safety Warnings - Panasonic AQ-G Manual

Cautions for Use of Solid State Relays

SAFETY WARNINGS

• Do not use the product under conditions that exceed the range
of its specifications. It may cause overheating, smoke, or fire.
• Do not touch the recharging unit while the power is on. There is
a danger of electrical shock.
Be sure to turn off the power when performing mounting,
maintenance, or repair operations on the relay (including
connecting parts such as the terminal socket and socket).
Cautions for Use of Solid State Relays
1. Derating design
Derating is a significant factor for reliable design and product life.
Even if the conditions of use (temperature, current, voltage, etc.)
of the product are within the absolute maximum ratings,
reliability may be lowered remarkably when continuously used in
high load conditions (high temperature, high humidity, high
current, high voltage, etc.) Therefore, please derate sufficiently
below the absolute maximum ratings and evaluate the device in
the actual condition.
Moreover, regardless of the application, if malfunctioning can be
expected to pose high risk to human life or to property, or if
products are used in equipment otherwise requiring high
operational safety, in addition to designing double circuits, that
is, incorporating features such as a protection circuit or a
redundant circuit, safety testing should also be carried out.
2. Applying stress that exceeds the absolute maximum
rating
If the voltage or current value for any of the terminals exceeds
the absolute maximum rating, internal elements will deteriorate
because of the overvoltage or overcurrent. In extreme cases,
wiring may melt, or silicon P/N junctions may be destroyed.
Therefore, the circuit should be designed in such a way that the
load never exceed the absolute maximum ratings, even
momentarily.
3. Phototriac coupler
The phototriac coupler is designed solely to drive a triac. As a
condition, the triac must be powered beforehand.
4. Unused terminals
1) Phototriac coupler
The No. 3 terminal is used with the circuit inside the device.
Therefore, do not connect it to the external circuitry. (6 pins)
2) AQ-H
The No. 5 terminal is connected to the gate.
Do not directly connect No. 5 and 6 terminals.
5. Short across terminals
Do not short circuit between terminals when device is energized,
since there is possibility of breaking of the internal IC.
6. When used for the load less than rated
An SSR may malfunction if it is used below the specified load. In
such an event, use a dummy resistor in parallel with the load.
Ro (dummy resistor)
1
Load
Load power
SSR
supply
2
• Check the connection diagrams in the catalog and be sure to
connect the terminals correctly.
If the device is energized with short circuit or any wrong
connection, it may cause unexpected malfunction, abnormal
heat or fire.
Load Specifications
Type
AQ-G All models
AQ1 All models
AQ8 All models
AQ-J All models
AQ-A All models
7. Noise and surge protection at the input side
1) Phototriac coupler and AQ-H
If reverse surge voltages are present at the input terminals,
connect a diode in reverse parallel across the input terminals
and keep the reverse voltages below the reverse breakdown
voltage.
Typical circuits are below shown.
< Phototriac coupler (6-pin)>
2) SSR
A high noise surge voltage applied to the SSR input circuit can
cause malfunction or permanent damage to the device. If such a
high surge is anticipated, use C or R noise absorber in the input
circuit.
Typical circuits are below shown
Control voltage
source
8. Recommended input current of Phototriac coupler and
AQ-H
Design in accordance with the recommended operating
conditions for each product.
Since these conditions are affected by the operating
environment, ensure conformance with all relevant
specifications.
ー 5 ー
Load current
20 mA
50 mA
50 mA
50 mA
100 mA
1 6
2 5
3 4
R
3
C SSR
4
ASCTB400E 201806-T