Connection; Connecting The Supply Voltage; Earthing; Main Branch - Pilz 20 748-03 Operating Manual

Connection

Connecting the supply voltage

• Connect the 24 V on the power supply to terminal contact 1/2 on terminal block
X0.
• Connect the 0 V on the power supply to terminal contact 3/4 on terminal block
X0.
NOTICE
If the Active Junction is being used to separate sections of the plant, each Active
Junction should be fed through a separate power supply. This will stop a short
circuit in the supply to one plant section affecting the other plant sections.

Earthing

NOTICE
Ensure that the cable screening is connected throughout in each branch. Ensure
the connection for the IN/OUT bus cable is made correctly in each bus
connector.
Please read the information in chapter "Installation and Assembly" of the
"SafetyBUS p Installation Manual".

Main branch

• Connect the cable screening with low impedance to the screen bar or earth bar;
this only needs to be done once for the whole main branch (Fig 8).
• Please refer to the information in the chapter entitled "Installation and
Assembly" in the "SafetyBUS p Installation Manual".

Sub branches

• Connect each sub branch cable screen to one of the connections on the two
terminal blocks X3/X4 (SHIELD) on the base unit. X3/X4 is connected internally
to X5.
• Connect the X5 terminal block connections (
impedance to the screen bar or earth bar (Fig. 8).
• Follow the guidelines in the "SafetyBUS p - IP67 Physical Layer Concept"
published by the SafetyBUS p Club International e.V.
12
) on the base unit with low
Operating Manual: PSS SB ACTIVE JUNCTION BASIS