Siemens SIWAREX WP241 - Connection of Digital Inputs (4 X DI)

Connecting
6.6 Connection of digital inputs (4 x DI)
SIWAREX WP241
Manual, 04/2014, A5E33713528A
33
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 digital inputs. The digital inputs are
not permanently assigned to commands in the delivery state. Assignment of the digital inputs
to commands is carried out during commissioning by parameter assignment of data record 7.
The external 24 V switching signal is connected electrically isolated to the desired input, the
associated ground to terminal 2M.
When using a speed sensor it is essential to connect it to digital input DI.0. In addition, the
input must be defined as a speed sensor input in data record 7 (factory setting). Detailed
wiring examples can be found in chapter → Connection of a speed sensor (Page 37).
Table 6- 4
Connection of the digital inputs
Labeling
Function
DI.0
Digital input 0 (input for speed sensor)
DI.1
Digital input 1
DI.2
Digital input 2
DI.3
Digital input 3
DI.2M
Reference ground potential of the digital inputs