Connecting The Switch Body With The Controller And Power Supply Unit - Panasonic SG-P Series Instruction Manual

3.3 Connecting the Switch Body with the Controller and Power Supply Unit

3.3 Connecting the Switch Body with the Controller and Power Supply
Unit
● Be sure to use this device together with a safety device such as a safety controller.
● If the power supply used for this device is shared by other devices, the device may be
affected by noise emitted from other devices. Do not share the power supply used for this
device with other devices.
● Note that our Safety Control Unit SF-C21 cannot be connected to the NPN output type
(SG-P□□-M-N).
● Note that the SG-P□□-S sub unit cannot be used alone. When using a single device, use
the SG-P□□-M standard unit. When connecting multiple devices together, use the SG-
P□□-S sub unit for the second unit onwards.
● The power supply unit used for this device must satisfy the following requirements.
1. The power supply unit must be certified for use in your region.
2. The power supply unit must have the rated output voltage of 24 VDC +10% / -20%
and the ripple (P-P) of 10% or less.
3. The power supply with SELV (Secondary Extra Low Voltage) or PELV (Protective
Extra Low Voltage) that comply with the RE Directive must be used. (When CE
Marking is required)
4. The power supply must comply with Class 2 defined by UL508 or satisfy the output
characteristics requirements of the limited voltage and current circuit.
5. The power supply unit must have reinforced insulation or double insulation between
the primary circuit and secondary circuit.
6. When using a commercial switching regulator, the frame ground (F.G.) terminal must
be connected to ground.
7. The power supply unit must have an output holding time of 20 ms or more.
8. If surges occur, take countermeasures such as connecting a surge absorber to the
source of the surges.
● Our Safety Control Unit SF-C21 can be connected only to the PNP output type (SG-P□□-
M-P). For details, refer to the "SF-C21 Instruction Manual".
The following sections describe wiring examples for connecting the switch body (SG-P□□-M) of
this device to the power supply unit and the safety control unit .
● Our Safety Control Unit SF-C21 can be connected only to the PNP output type (SG-P□□-M-P).
For details, refer to the "SF-C21 Instruction Manual".
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