5 Installation
5.3 Interfaces
36
MICRO PANEL XP-702
07/2011 MN04802003Z-EN
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5.3.3
Power supply
The device is provided with an internal fuse and is protected against polarity reversal. The functional
earthing terminal is connected to both the housing and the 0 V terminal. The device power supply is
not
electrically isolated.
The device requires a 24 VDC power supply from an AC/DC converter with safe isolation (SELV). For
other power supply requirements see Chapter 9.5.1 Power supply,
SELV (safety extra low voltage):
Circuit in which no dangerous voltage is present, even in the event of a single fault.
Wiring
Phoenix Contact MSTB 2.5/3-ST-5.08 connector, Phoenix order no. 1757022 is supplied with the
device.
Tab. 12 Assignment of connector
The following must be observed when the connector wiring is prepared:
Tab. 13 Preparing the wiring of the connector
Fig. 11 Power supply interface
Fig. 12 Phoenix Contact MSTB 2.5/3-ST-5.08 connector (view from the wiring side)
Connection
Assignment
+24 VDC
+24 VDC power supply
E
Functional earthing connected to housing.
Does not have to be connected.
0 V
0 V power supply (connected to
E
)
Preparing the wiring of the connector
Terminal type
Pluggable screw terminal
Cross-section
min. 0.75 mm
2
/ max. 2.5 mm
2
(lead or wire)
min. AWG18 / max. AWG12
Stripping length
7 mm
Max. tightening torque
0.6…0.8 Nm / 5…7 Lb. In.
E
0 V
+24 VDC
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