Wiring; Power Supply Unit - Panasonic SF2B Series Instruction Manual

2-5 Wiring

● Earth the machine or the support where the device is mounted on to frame
ground (F.G.). Failure to do so could cause the malfunction of the device by
noise, resulting in death or serious injury.
Furthermore, the wiring should be done in a metal box connected to the frame
ground (F.G.).
● Take countermeasure against the system to be applied for this device so as not
to carry out the dangerous performance caused by the earth failure. Failure to
do so could cause invalid for the system stop, resulting in death or serious injury.
● In order that the output is not turned ON due to earth fault of control output
(OSSD 1 / 2) wires, be sure to ground to 0V side (PNP output type) / +24V side
(NPN output type).
Make sure to insulate the ends of the unused lead wires.
<Reference>
Use a safety relay unit or an equivalent control circuit in safety for FSD.

2-5-1 Power Supply Unit

Wire correctly using a power supply unit which conforms to the laws and stan-
dards of the region where this device is to be used. If the power supply unit is
non-conforming or the wiring is improper, it can cause damage or malfunction of
this device.
<Reference>
A specialist who has the required electrical knowledge should perform the wiring.
The power supply unit must satisfy the conditions given below.
1) Power supply unit authorized in the region where this device is to be used.
2) Power supply unit SELV (safety extra low voltage) / PELV (protected extra low voltage) con-
forming to EMC Directive and Low-voltage Directive (only for requiring CE marking conforma-
tion).
3) Power supply unit conforming to the Low-voltage Directive and with an output of 100VA or less.
4) The frame ground (F.G.) terminal must be connected to ground when using a commercially
available switching regulator.
5) Power supply unit with an output holding time of 20ms or more.
6) In case a surge is generated, take countermeasures such as connecting a surge absorber to
the origin of the surge.
7) Power supply unit corresponding to CLASS 2 (only for requiring
© Panasonic Industrial Devices SUNX Co., Ltd. 2016
Ramco Innovations | www.ramcoi.com | 800-328-6236 | nsales@ramcoi.com
UL Mark conformation).
C US
27