Siemens SINUMERIK 840D sl Manual page 77

Parameters
Input delay (typ.)
Digital inputs/outputs at X122 / X132 / X142
Table 7-30
Parameters
Voltage
Typical current consumption
Signal level (including ripple)
Input delay (typ.) of inputs / "rapid inputs"
Voltage
Maximum load current per output
Output delay (typ. / max.)
Switching frequency
max. lamp load
1)
NOTICE
Ensuring the function of the digital inputs
An open input is interpreted as "low".
Only "rapid inputs" can be used as inputs for BEROs and probes.
Terminals G1 or G2 must be connected for the digital inputs to work. This can be done as
follows:
● Connect the ground reference of the digital inputs.
● A jumper to terminal M (note that these digital inputs are then no longer electrically
Note
For a transient (brief) voltage interruption of the 24 V supply, the digital outputs are switched
inactive for this time.
NCU 7x0.3 PN, NCU 7x0.3B PN
Manual, 06/2014, 6FC5397-1EP40-5BA1
Technical data of the digital inputs/outputs of X122 / X132 / X142
1)
Data for: V = 24 V; load 48 Ω; High = 90 % V
cc
isolated).
Values
Low signal level: -3 V to 5 V
L → H: 50 μs
H → L: 100 μs
Values
As an input
-3 V to +30 V DC
9 mA at 24 V DC
High signal level: 15 V to 30 V
Low signal level: -3 V to 5 V
L → H: 50 μs/5 μs
H → L: 100 μs / 50 μs
As an output
24 V DC
500 mA continuously short circuit-proof
L → H: 150 μs / 400 μs
H → L: 75 μs / 100 μs
for resistive load: max. 100 Hz
for inductive load: max. 0.5 Hz
for lamp load: max. 10 Hz
5 W
; Low = 10 % V
out out
Connecting
7.9 Digital inputs/outputs
77