Wiring The Power Supply - Omron G9SP-N20S Operation Manuals

Wiring
4-2-2

Wiring the Power Supply

Wiring the Power Supply
Power Supply Selection
Power Supply Grounding
64
The G9SP-series Controller provides power terminals V1/G1 for the internal
and input circuits and power terminals V2/G2 for the output circuits.
Use a power supply with a voltage fluctuation range of 20.4 to 26.4 VDC.
• If the voltage may drop due to the starting current or inrush current for
output devices, use different power sources for the two power supplies.
• When using more than one G9SP-series Controller, use separate power
supply circuits for each G9SP-series Controller to prevent the malfunction
of breakers and voltage drops from inrush current.
USB
D+
D−
Use a DC power supply satisfying the following requirements.
• The secondary circuit of the DC power supply must be isolated from the
primary circuit by double insulation or reinforced insulation.
• An isolated power supply that is limited to a current of 8 A or lower must
be used.
• The output hold time must be 20 ms or longer.
• The DC power supply must be a SELV power supply that satisfies the
requirements of IEC/EN 60950-1 and EN 50178.
• Ground the 0-V side of the power supply terminals (G1 and G2) to enable
detecting faults for disconnected I/O wiring or ground faults.
• Ground to 100 Ω or less to provide stronger noise immunity.
• Do not share ground lines with other equipment or ground to structural
parts of buildings to prevent adverse influences.
Precautions for Safe Use
• Connect the positive and negative terminals correctly.
• Supply power to all of the Power Supply Units from the same source.
24 VDC
V1
G1
Si0
Safety
Input
Si19
Circuit
T0
Test
Output
T5
Circuit
V2
Safety
G2
Output
So0
Circuit
L
So7
L
Standard
Output
O0
L
Circuit
O3
L
Section 4-2