An open circuit or short circuit on a power supply or network connection to one connected PT2009-A1 affects just this PT2009-A1. The other PT2009-A1 still work properly.

There are 2 variants to create a redundant power supply and network connection to PT2009-A1.

To get a redundant analog audio connection, use variant B or use variant A with a second digital audio matrix and connect the 'PACE-Bus' (RS485) and analog audio signals of the second PT2009-A1 to it.

Variant A

Redundant wiring of multiple PT2009-A1

1

Cerberus PACE Compact cabinet

2

External 'Desk call station (RS485, 8+1)' PT2009-A1 with accessories

3

'MeanWell SD-50B-24 DC/DC Converter (50W)' PCA2011-A1 or 'MeanWell SD-100B-24 DC/DC Converter (100W)' PCA2018-A1

4

'Ground fault monitoring (24V)' PCA2001-A1

5

'ICPDAS I-7510 (RS485, isolated)' PNA2009-A1

6

'Call station interface (RS485)' PTO2008-A1

7

Wiring to PTO2008-A1

8

Copper Ethernet cable (CAT5) with RJ45 connector, connecting PTO2008-A1 to PT2009-A1

The figure above displays a redundant wiring example of multiple PT2009-A1 being connected to one cabinet. This wiring can be utilized in standard and evacuation use cases.

The two connected PT2009-A1 share one analog audio input channel. Therefore, only one PT2009-A1 can be active at the same time.

PCA2011-A1 and PCA2018-A1 (3) provide isolated DC 24 V. A short circuit outside of the cabinet has no impact on the signals in the cabinet or other PT2009-A1.

The PCA2001-A1 (4) detects a ground fault on the 24 V wiring to PT2009-A1.

The PNA2009-A1 (5) provides an isolated 'PACE-Bus' (RS485). Each PT2009-A1 is connected with one PNA2009-A1. A short circuit outside of the cabinet has no impact on the 'PACE-Bus' communication to the other 'PACE-Bus' components.

The 24 V power supply, the 'PACE-Bus' (RS485) and the analog 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 an RJ45 connector for all the signals, facilitating the wiring of the PT2009-A1.

Each PT2009-A1 is connected with one PTO2008-A1.

Standard copper Ethernet cables (CAT5) with RJ45 connectors are used for the wiring (8), connecting PTO2008-A1 to PT2009-A1.

Variant B

Redundant wiring of multiple PT2009-A1 with PN1002-A1 or PN2009-A1

1

Cerberus PACE Compact cabinet

2

External 'Desk call station (RS485, 8+1)' PT2009-A1 with accessories

3

'RS485 module (1 port)' PN1002-A1 or 'RS485 module (1 port, DIN rail)' PN2009-A1

4

Wiring to PN1002-A1 or PN2009-A1

5

Copper Ethernet cable (CAT5) with RJ45 connector, connecting PT2009-A1 to PN2009-A1

The figure above displays a redundant wiring example of multiple PT2009-A1 being connected to one cabinet. This wiring can be utilized in standard and evacuation use cases.

No fault in the wiring (5) between the PN1002-A1 or PN2009-A1 (3) and the PT2009-A1 (2) affects the other PT2009-A1.

The two connected PT2009-A1 share one analog audio input channel. Therefore, only one PT2009-A1 can be active at the same time.

The PN1002-A1 and PN2009-A1 (3) provide an isolated DC 24 V with ground fault monitoring, an isolated 'PACE-Bus' (RS485), and isolated analog audio input and analog audio output.

A short circuit or open circuit outside of the cabinet has no impact on the other PT2009-A1 and the signals in the cabinet.

The PN1002-A1 and PN2009-A1 provide an RJ45 connector for all the signals, facilitating the wiring of the PT2009-A1.

Standard copper Ethernet cables (CAT5) with RJ45 connectors are used for the wiring (5), connecting PT2009-A1 to PN1002-A1 or PN2009-A1.