Siemens SIWAREX WP251, Руководство пользователя

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Connection
6.6 Connection of digital inputs (4 x DI)
SIWAREX WP251
Manual, 12/2015, A5E37203357A
35
The electronic weighing system described here has four isolated, short-circuit proof digital
outputs. They are not permanently assigned to process values or functions in the delivery
state. The assignment of the digital outputs to functions and the response to errors takes
place during commissioning by assigning parameters of data record 7. The 24 V power
supply of the digital outputs is provided via terminals 3L+ and 3M with electrical isolation.
Table 6- 3 Connection of the digital outputs
Labeling Function
DQ.0 Digital output 0
DQ.1 Digital output 1
DQ.2 Digital output 2
DQ.3 Digital output 3
DQ.3L+ +24 V DC power supply for digital outputs
DQ.3M Ground of power supply for digital outputs
6.6 Connection of digital inputs (4 x DI)
CAUTION
Unknown assignment of digital inputs
If the assignment of the digital inputs is not known at the time of connection, this may
damage parts of the system.
Do not create a connection with the digital inputs before you know the assignment.
The electronic weighing system described here has four isolated digital inputs. The digital
inputs are not permanently assigned to commands in the delivery state. The assignment of
the digital inputs to commands takes place during commissioning by assigning parameters of
data record 7. The external 24 V switching signal is connected electrically isolated to the
desired input, and the associated ground is connected to terminal 2M.
Table 6- 4 Connection of the digital inputs
Labeling Function
DI.0 Digital input 0
DI.1 Digital input 1
DI.2 Digital input 2
DI.3 Digital input 3
DI.2M Reference ground potential of the digital inputs