Siemens SINUMERIK 828D Manual page 143

To enable digital inputs (DI) 0 to 3 to function, terminal M1 must be connected. This can be
done as follows:
• Connect the ground reference of the digital inputs.
• A bridge to terminal M.
Table 11- 48 Technical specifications for X122
Parameter
Current consumption
Galvanic isolation
As an input
Voltage
Current consumption
Signal level (including ripple)
Signal propagation delays
As an output
Voltage
Max. load current
Power supply
Connector designation:
Connector type:
Max. connectable cross-section:
Table 11- 49 Pin assignment for X124
Pin Signal name
1 +
2 +
3 M
4 M
Note
The two "+" and "M" terminals are jumpered in the connector and not in the device. This
ensures that the supply voltage is looped through.
PPU
Manual, 06/2009, 6FC5397-2DP10-0BA0
DANGER
Notice: This will cancel the galvanic isolation for these digital inputs.
Value
Typical: 10 mA at 24 V DC
The reference potential is terminal M1
-3 V to 30 V
Typical: 10 mA at 24 V DC
High signal level: 15 V to 30 V
Low signal level: -3 V to 5 V
Inputs / "fast inputs":
L → H: approx. 50 μs/5 μs
H → L: approx. 100 μs/50 μs
24 V DC
Per output: 500 mA continuous short circuit-proof
Signal type
VI
VI
VO
VO
X124
Screw terminal 2
2.5 mm
2
Meaning
Electronic power supply
Electronic power supply
Ground
Ground
Spare parts/accessories
11.5 NX10
143