Grounding - Siemens SINUMERIK 840DiE sl Manual

2 Hardware Descriptions
2.11 I/O module PP72/48
2.11.4

Grounding

!
2-88
Table 2-21 Specification of the power supply voltage P24OUT,
Voltage
Minimum
Nominal
Maximum
Minimum (dynamic)
Maximum (dynamic)
Non–cyclic overvoltage
Max. (absolute, transient)
Max. duration
Min. recovery time
Max. events per h
Voltage failure for min. power supply voltage
1)
Max. duration
Min. recovery time
Max. events per h
Power consumption
Maximum
On the module side the power supplies must be protected against:
S
Polarity reversal
S
Short–circuit (elec. current limitation of the outputs)
S
Overload (fuse protection).
The module must be installed according to EN 60204.
If a large–area, permanent metallic connection with the central ground point
through the rear panel is not possible, the mounting plate must be connected to
the grounding by means of a line (cross section >10 mm
Caution
A protective conductor must be connected.
20.4 V
24 V
28.8 V
18.5 V
30.2 V
35 V
500 ms
50 s
10
50 ms
1 s
10
approx. 40 W
2
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
01/2007
).