Siemens SINUMERIK MCP-S Series Equipment Manual page 38

Connecting
5.1 interfaces
Universal inputs X515 / X516
Figure 5-1
Table 5-6
Parameter
Voltage
Typical power consumption
Signal level (including ripple)
Electrical isolation
Note
When connecting an external 24 V DC power supply to interfaces X515/ X516, this must satisfy
the requirements of a protective extra low voltage (PELV) according to UL 61010. A backup fuse
must also be used which safely trips within 120 seconds at an ambient temperature of 0 °C for
a current of 6.5 A.
Alternatively, a circuit must be used that limits the current to 5 A within 60 seconds during
normal operation and in the event of an individual error.
The contact gap of the fuse or the individual error-proof circuit must be ensured with 3.0 mm
according to UL 61010 for a primary power supply from OVC III circuits up to 600 V AC (line-to-
neutral voltage).
When using an external power supply, make sure that the fuse used has a tripping rating that
corresponds to the maximum possible short-term short-circuit current of the power supply unit
used.
38
Schematic circuit diagram
Technical data
Value
Nominal: 0 V to 5 V
Permissible: -3 V to 30 V
+0.2 mA at 5 V DC
-0.3 mA at 0 V DC
High: 2.3 V to 5 V
Low: 0 to 1.0 V
None
Equipment Manual, 07/2020, A5E50324729B AA
ONE MCP Part 1: MCP xxxx