Installing the Control System
SINUMERIK 802C base line
2-21
Start-Up
2.4 Power Supply for CNC (X1)
Screw-terminal block
The 24 V DC load power supply unit required for supplying CNC is connected
to screw-
type terminal block X1.
Characteristics of the load power supply
The 24 V DC voltage must be generated as a functional extra-low voltage with
safe electrical Isolation (to IEC 204–1, Section 6.4, PELV).
Table 2–17 Electrical parameters of the load power supply
Parameter Min. Max. Units Conditions
Voltage range mean value 20.4 28.8 V
Ripple 3.6 Vss
Non-periodic overvoltage 35 V 500 ms cont.
50 s recovery
Rated current consumption 1.5 A
Starting current 4 A
Pin assignment on the CNC side
Table 2–18 Pin assignment of screw terminal block X1
Terminal
1PEPE
2 M Ground
3 P24 DC 24 V
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