Siemens Sinumerik 840DiE sl - Page 84

01/2007
2.11 I/O module PP72/48
2-84
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
S Connecting cable: The required connecting cables (ribbon cables) must be
provided by the user.
.
S Electrical specification of the digital inputs:
Table 2-18 Electrical specification of the digital inputs:
Digital inputs
Min. Typical Max. 5 A Nominal
Voltage at high signal level (U
H)
15V
1)
30V 24V
Input current I
IN
at V
H
2mA – 15mA –
Voltage at low signal level (U
L)
–30V – +5V 0V
Signal delay time T
PHL
2)
0.5 ms – 3 ms –
S Supply voltage of the digital inputs
1) typical output voltage: V
CC
– I
OUT
R
ON
V
CC
: actual operating voltage (P24OUT) at X111,
X222, X333: Pin 2
max. output current I
OUT
: 500 mA per pin
max. short–circuit current: 4 A (max. 100 ms, V
CC
= 24 V)
internal resistance R
ON
: 0.4 W
S 2)
Moreover, the PROFIBUS communication time and the application cycle time must
be taken into account.
S Polarity reversal causes neither high level nor destruction of the inputs.
2 Hardware Descri
p
tions