Siemens SINUMERIK 840Di - Page 117

06.03
2.13 ADI4 (analog drive interface for 4 axes) (SW 09.01 and higher)
2-117
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
2 Connection if an external power supply is used
P24OUText
; the connection to 1 is then no longer necessary.
S Internal power supply P24OUT
The power supply available for digital inputs at X6-2, pin 1 is specified as
follows:
Table 2-34 Specification of the power supply voltage P24OUT
Voltage
minimum 20.4V
nominal 24V
max. 28.8V
Ripple
max. 3.6Vpp
Current load
typical 0.1A
max. 1A
Power consumption
typical 3.02W
max. 30.2W
Insulation class A, acc. to DIN 57110b
S Typical output voltage: V
CC
– I
OUT
<R
ON
– 0.65V
V
CC
: Current P24OUT operating voltage
max. output current I
OUT
:1A
Internal resistor R
ON
: 0.4W
S The power supply P24OUT is short-circuit-proof
S External power supply P24OUText
If an external power supply Is used for the digital inputs, its reference ground
must be connected to X6-2, pin 12 (GND).
X6-2, pin 1 (P24OUT) then remains open.
S Electrical specification of the digital inputs
Table 2-35 Electrical specification of the digital inputs
Digital inputs min. typical max. nominal
Voltage at high level (V
hi)
15V
1)
30V 24V
Input current I
IN
at VU
hi
3.7mA – 7.5mA –
Voltage at low level (V
lo)
–30V – +5V 0V
Signal delay T
PHL
and T
PLH
2)
– 3msecs – –
S 1) see Table 2-34, page 2-117
S 2) The PROFIBUS communication time and the application cycle
time must also be taken into account.
S Polarity reversal causes neither high level nor destruction of the inputs.
S Connecting cable: The required connecting cables must be provided by the
user.
2 Hardware Descri
p
tions