
G3DZ
G3DZ
41
Precautions
If any reversed surge voltage is imposed on the input terminals, in-
sert a diode in parallel to the input terminals as shown in the follow-
ing circuit diagram and do not impose a reversed voltage value of
3 V or more.
Input
+
13
–
1
5
7
Load
Load Connection
When connecting a load generating a high inrush current (such as a
lamp load) to the MOS FET Relay, make sure that the MOS FET
Relay can withstand the inrush current.
OMRON’s datasheets show the non-repetitive peak value of the
MOS FET Relay’s inrush current durability. Normally allow 1/2 of
this inrush current to flow through the MOS FET Relay. If an inrush
current exceeding that value is expected, connect a quick-blowing
fuse to protect the MOS FET Relays.
AC Load
No zero cross function is incorporated.
The maximum operating frequency is 10 Hz.
Forwarding/Reversing Control of Single-phase Inductive
Motor
Use a MOS FET Relay with an output voltage twice as large as the
supply voltage. Contact your OMRON representative before using
MOS FET Relays with 200 V output.
MOS
FET
Relay
+
–
+
–
SW1
SW2
Input
Input
Motor
Load power
supply
MOS
FET
Relay
Operate SW1 for at least 30 ms after SW2 has been operated, or
vice versa.
Capacitive Load
1. Use a MOS FET Relay with an output voltage twice as large
as the supply voltage because the supply voltage and charge
voltage of the capacitor are imposed on the MOS FET Relay
at the same time when the MOS FET Relay is turned OFF.
2. Limit the charge voltage of the capacitor to 1/2 of the peak
inrush current value that is allowed to flow into the MOS FET
Relay.
Handling Instructions
Handle the G3DZ with care so that the G3DZ will not be damaged
due to static electricty.
DC Load
If a coil load such as a solenoid or electromagnetic valve is con-
nected to the G3DZ, connect a diode in parallel to the load to absorb
counter-electromotive force.
Input
Load
MOS
FET
Relay
For high-speed operation:
Input
Load
MOS
FET
Relay
To shorten the time, connect a Zener diode and a regular diode in
series as shown in the illustration above.
The G3DZ switches full-wave rectified alternating currents, half-
wave rectified alternating currents, and low capacity load currents.
AC/DC Load
DC Load
+
–
+
DC
–
Load
AC
MOS
FET
Input
–
Load
MOS
FET
Relay
Input
–
DC
+
+
–
Load
Load
Load power
supply
Or
Or
+
If an inductive AC load is connected to the G3DZ, connect a varistor
as a surge absorber in parallel to the load.
+
–
Load
MOS
FET
Relay
Input
Load
Although the G3DZ has a built-in varistor connected to the load ter-
minals of the G3DZ to absorb noise, do not wire power lines or high-
tension lines along with the lines connected to the G3DZ in a single
duct or the G3DZ may be damaged or malfunction due to induction.
The surge absorption element must satisfy the following require-
ments.
Operating voltage
100 to 120 VAC
Varistor voltage
240 to 270 V
Inrush resistance
1,000 A min.
Operating voltage
200 to 240 VAC
Varistor voltage
440 to 470 V
Inrush resistance
1,000 A min.