Planning

Planning call stations
PACE-Bus RS485 call station PT2003, PT2009
8
38 | 46
A6V11899877_en--_b
The PNA2009-A1 (5) provides an isolated 'PACE-Bus' (RS485). A short circuit
outside of the cabinet has no impact on the communication in the cabinet.
The 24 V power supply, the 'PACE-Bus' (RS485) and the audio signal are
connected to PTO2008-A1 (6).
A fuse on the PTO2008-A1 protects the internal 24 V power supply.
The PTO2008-A1 provides a RJ45 connector with all the signals, which facilitates
the wiring of the PT2009-A1.
Standard copper Ethernet cables (CAT5) with RJ45 connectors are used for the
wiring (8), connecting PTO2008-A1 to the first PT2009-A1, and the wiring (9),
connecting one PT2009-A1 to the next.