Operating instructions

Installation
Feed/Feed-Back Units BUC 624, 625 37
Baumüller Nürnberg GmbH 5.96024.06a
5.6.2 Control terminals
y Sub-unit terminal X99A / X99B
All terminals are connected to each other (i.e. terminal 1 of X99A is connected to terminal 1 of X99B ...).
Because of this they can be used as BUS-connection from one Baumüller unit to the other.
Due to the connection of X99A (BUC) to the X99B of the next BUS-device in the chain, the system can
execute the signals as a bus connection.
Line length of the connection: 44 mm.
X99B (BUC) X99A (BUS)
WARNING
All the control voltages connected from outside must be PELV or SELV.
Terminal-No. Assingnment
1, 2 + 24 V (PELV)
Connection for mains unit supply of the devices,
both connections are jumpered internally;
use second connection with mains unit currents
above 10 A
3, 4 24-V Frame ground (PELV)
Connection for mains unit supply of the devices,
both connections are jumpered internally;
use second connection with mains unit currents
above 10 A
5 BB int (PELV)
Ready for use signal of the supply converter to all the
devices connected to the DC link
6 Reserve (PELV)