Wiring; Power Supply Unit - Panasonic SF4D Series Instruction Manual

2-5 Wiring

● Ground the machine or support on which the device is installed to frame ground (F.G.). If not
grounded properly, there is a risk of death or serious injury from malfunctioning caused by noise.
Enclose the wiring in a metal wiring box connected to frame ground (F.G.).
● Design the system that uses the device so that dangerous operation will not be caused by a
grounding failure. Risk of death or serious injury if the system cannot be stopped.
● To prevent the output from turning ON if the control output (OSSD 1 / 2) wire shorts to ground
(ground fault), always ground to 0V for PNP output, or +V for NPN output.
● When used as Korean S-mark compliant equipment, always ground to 0V (PNP output).
Always insulate the ends of lead wires that are not used.

2-5-1 Power Supply Unit

Use a power supply unit that conforms to the laws and regulations (code) of the region where the
device is to be used, and connect correctly.
Risk of device damage and malfunctioning if a non-compliant unit is used or the wiring is incorrect.
<Reference>
Wiring work must only be done by a qualified electrician or technician.
The power supply unit must satisfy the following requirements:
1) The power unit must be certified for use in your region.
2) The power supply unit must be a SELV (safety extra low voltage) / PELV (protected
extra low voltage) unit that conforms to the EMC Directive and Low-voltage Directive.
(When CE marking is required.)
3) When using a commercial switching regulator, the frame ground (F.G.) terminal must be
connected to ground.
4) The power supply unit must have an output holding time of 20ms or more.
5) If surges occur, take countermeasures such as connecting a surge absorber to the
source of the surges.
6) The power unit must be a CLASS 2 compliant unit. (When
required.)
© Panasonic Industrial Devices SUNX Co., Ltd. 2017
WARNING
CAUTION
CAUTION

Wiring

TÜV mark compliance is
C US
45