Siemens SINUMERIK ONE NCU 1740, Руководство по эксплуатации оборудования

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12.1.4 Connection
Power supply X124
Table 12-2 Pin assignment for X124
Pin Function
+/- 24 VDC power supply (20.4 V - 28.8 V)
+/-
M
Ground
M
Note
The two "+" and "M" terminals are jumpered in the connector and not in the device. This ensures
that the supply voltage is looped through.
The current consumption increases by the current consumption of DRIVE-CLiQ and the digital
outputs.
When using external power supplies (e.g. SITOP), the ground potential of the power supply must
be connected with the protective ground connection of the system (PELV).
Table 12-3 Cable specification for X124
Characteristics Version
Connector type 4-pin screw-type terminal
Connectable cable types and conductor cross-sections
• Rigid
• Flexible
• Flexible, with end sleeve without plastic sleeve
• Flexible, with end sleeve with plastic sleeve
• AWG / kcmil
• 0.2 mm² to 2.5 mm²
• 0.2 mm² to 2.5 mm²
• 0.2 mm² to 2.5 mm²
• 0.2 mm² to 1.5 mm²
• 16 to 14
Stripped length 6-7 mm
Tool Screwdriver 0.5 x 3 mm (M2.5)
Tightening torque 0.4 to 0.5 Nm
Max. current carrying capacity, incl. loop-through 20 A (15 A according to UL/CSA)
Max. cable length 10 m
Connectable components
12.1 NX10.3/NX15.3
NCU 1740
104
Equipment Manual, 10/2021, A5E51087503B AA