Siemens SINUMERIK 840Di Manual page 120

2 Hardware Descriptions
2.13 ADI4 (analog drive interface for 4 axes) (SW 09.01 and higher)
Specification of
the power supplies
(+24VDC)
2-120
The external power supplies for the ADI4 module, the digital outputs, and op-
tionally the digital inputs must meet the specifications in Table 2-30.
Table 2-37 Specification of the external power supplies
Voltage
minimum
nominal
max.
Ripple
max.
Current load
typical
max.
Power consumption
typical
max.
1) P24EXT1: Supply voltage of the ADI4 module
P24EXT2: Supply voltage for the digital outputs
P24OUText: Optional supply voltage for the digital inputs
Caution
The external power supply voltages must be generated as functional extra-low
voltages with safe electrical isolation (DIN EN 60204-1, Section 6.4, PELV).
On the module side, power supplies P24EXT1 and P24EXT2 must be protected
against:
S
Overvoltage
S
Short-circuit (elec. current limitation of the outputs)
S
Polarity reversal
S
Overload
– P24EXT1: Fuse 2.5A/250V
– P24EXT2: Fuse 8A/125V.
Supply voltage
P24EXT1 P24EXT2
18.5V
24V
30.2V
3.6Vpp
0.5A –
1A 8A
12W –
30.2W 241.6W
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
06.03
1)
P24OUText
0.1A
1A
3.02W
30.2W