Noise Terminal Voltage; Recommended Fuses; Reverse Connection - Omron G3NA Manual

Noise Terminal Voltage According to
EN55011
The G3NA-UTU complies with EN55011 standards when a capacitor
is connected to the load power supply as shown in the following
circuit diagram.
3 m max.
G3NA-UTU
C1 Input Output
type
Varistor
Capacitor C1
0.1 µF •
G3NA-2@@: 470 V, 0.6 W
•
G3NA-4@@: 910 V, 0.8 W
• Connect capacitor C1 to both sides of the input terminals for a
G3NA with a DC input.
• Connect capacitor C2 to both sides of the load power supply
output.
• Connect the varistor to both sides of the G3NA output terminals.
• Do not use an input line that is longer than 3 m.
Loss Time
The loss time will increase when the G3NA is used at a low applied
voltage or current. Be sure that this does not cause any problems.
Loss time
Using DC Loads
For a DC or L load, a diode should be connected in parallel the load
to absorb the counter electromotive force of the load.
SSR
Input
Fuses
Connect a quick-break fuse in series with the load as a short-circuit
protection measure. Use one of the fuses in the following table or
one with equivalent or better characteristics.

Recommended Fuses

G3NA rated Fuse model
load current
5 A 60LFF5 Kyosan Electric
Manufacturing
8 A 60LFF8
Company
10 A 60LFF10
15 A 60LFF15
20 A 60LFF20
50SHA20
25 A 60PFF25
50SHA25
30 A 60PFF30
50SHA30
40 A 50SHA40
45 A 50SHA45
50 A 50SHA50
75 A 50SHA75
80 A 50SHA80
100 A 50SHB100
Capacitor C2
• G3NA-2@@: 1 µF, 250 VAC
G3NA-4@@: 0.5 µF, 500 VAC
•
Load
C2
Load
Load power
supply
Manufacturer
Applicable SSR
G3NA-205B-UTU
G3NA-210B-UTU
G3NA-220B-UTU
G3NA-240B-UTU
G3NA-250B-
UTU
G3NA-275B-UTU
G3NA-290B-UTU

Reverse Connection

The output terminal side of the G3NA-D210B is connected to a built-
in diode to protect the SSR from damage that may result from
reverse connection. The SSR, however, cannot withstand one minute
or more if the wires are connected in reverse. Therefore, pay the
utmost attention not to make polarity mistakes on the load side.
Solid State Relays
G3NA
13