Siemens SINUMERIK 840Di - Page 120

06.03
2.13 ADI4 (analog drive interface for 4 axes) (SW 09.01 and higher)
2-120
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
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
Supply voltage
1)
P24EXT1 P24EXT2 P24OUText
Voltage
minimum 18.5V
nominal 24V
max. 30.2V
Ripple
max. 3.6Vpp
Current load
typical 0.5A – 0.1A
max. 1A 8A 1A
Power consumption
typical 12W – 3.02W
max. 30.2W 241.6W 30.2W
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.
Specification of
the power supplies
(+24VDC)
2 Hardware Descri
p
tions