Requirements For The Power Supply - Siemens SINUMERIK MCU1720 Equipment Manual

Procedure
1. Insert the terminal at the marked position.
2. Secure the terminal using the integrated screws.
8.8.3

Requirements for the power supply

External 24 V power supply
The MCU power supply is an external 24 V power supply (e.g.: SITOP). The following currents
that are drawn for an MCU provide a basis for calculating the 24 V DC power supply required.
Table 8-3
Interface
X80
X142/X152
1) MCU only (processor, memory, etc.)
2) MCU with full load at all outputs (digital outputs, USB, etc.)
Note
Inrush current
To start, the device requires an inrush current of at least 6.5 A for 15 ms.
The peak value of the starting current depends on the input voltage and the impedance of the
24 V DC power supply. Peak currents higher than 6.5 A are possible. This does not impair the
functionality of the device.
MCU 1720
Equipment Manual, 09/2019, A5E47437728B AB
Input voltage specification
Typ. current consumption
4 A
2 A
Max. current consumption
1)
5 A
2 A
Connecting
8.8 Power supply X80
2)
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