BBB Business Review

How do I wire the PC5208?


The first step to wiring the PC5208 is to connect to the keybus. The PC5208 has RED, BLK, YEL, GRN terminals (red, black, yellow, and green wires) that will need to wire in parallel to the keybus. This can be done in a couple of different ways. The first is with a home run to the control panel where the keybus circuit originates. Or sometimes it is more efficient to wire in parallel with another keypad or module. There are two main points to remember with the keybus wiring:

  1. The wire distance to the PC5208, same as any other module/keypad, cannot be greater than 1000 feet.
  2. The total wire length for the entire keybus must be below 3000 feet.

Now that you are connected to the keybus, the next thing that you will need to wire is the tamper circuit. This will be from the TAM terminal to the BLK terminal. It is designed to be used for a cabinet or tamper switch to keep anyone from getting access to the PC5208 without being noticed. No resistor is required in the loop. You will just wire one side of the switch to the TAM terminal. The other side of the switch will wire to the BLK terminal. This is just like a simpler normally closed zone.

Using a tamper switch is not required though. Often a PC5208 will be in a large PC5003c cabinet with other modules or the main control board. And maybe the tamper switch is wired to one of the other devices. There is pretty much no need to put it on multiple modules. And really in a lot of instances, residential applications especially, people choose not to use tamper switches at all. If you are not using a tamper switch, you will still want to connect the BLK and TAM terminals with a regular piece of wire to close the loop.

Finally, you will connect to any of the programmable outputs that you need to use. The positive side of the circuit will wire to Aux+. The negative side of the circuit will wire to one of the PGM terminals. Because the PGMs on the PC5208 are low current, the PC5208 has limited direct applications. There are just very few devices that will draw less than 50 mA of current. But there are some that can be powered directly such as LED lights or a very low current piezo siren. Another common application is just to act as a trigger on a switch such as a garage door or some other relay.