Siemens SENTRON PAC3100 - Figure 6-3 Terminal Labeling; Figure 6-4 Terminal Block with 2 Digital Inputs and Outputs, Functional Ground

Connection
6.2 Connections
SENTRON PAC3100
Manual, 07/2009, A5E02385159B-01
43



No. Terminal Function
(20) Com Common = Ground
(21) +/B B signal; D1
(22) -/A A signal; D0
Figure 6-3 Terminal labeling
Grounding
Conductive panels and doors on control cabinets must be grounded. The doors of the control
cabinet must be connected to the control cabinet using a grounding cable.
Functional ground
DIC DI 0DI1 DO C DO0DO1

(13) Functional ground terminal
Figure 6-4 Terminal block with 2 digital inputs and outputs, functional ground
The connection "functional ground" discharges interference affecting the digital inputs
and outputs and the RS 485 interface.
Connect the functional ground to the equipotential bonding strip in the control cabinet.
The maximum cable length for connecting the functional ground is 3 meters.