An open circuit or short circuit on a connection to one connected PT2009-A1 affects just this PT2009-A1. Other PT2009-A1 still work properly.
There are 2 variants to create a complete redundant connection to PT2009-A1.
These wirings can be utilized in standard and evacuation use cases.
Variant A
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 connected PT2009-A1 analog audio input channel must be connected to separate analog audio inputs or separate digital audio matrices.
An open circuit or short circuit outside the cabinet affects only the adjacently-connected PT2009-A1.
Variant B
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 PN2009-A1 |
5 | Copper Ethernet cable (CAT5) with RJ45 connector, connecting PT2009-A1 to PN2009-A1 |
An open circuit or short circuit outside the cabinet affects only the adjacently-connected PT2009-A1.