Standard - wiring and capacity of BDU expansion

Owned by Jeff
Last updated: Jan 24, 2022
1 min read

BDU in Router mode for system capacity extender (by default)

Limits of distance (based on 2x0.75mm² twisted cable)

  • A: From door station to power supply, max 30 meters.

  • B: From power supply to the first BDU, max 50 meters.

  • C: The distance between 2 BDU, max 8 meters.

  • D: In the same BDU zone, the distance from first DBC4A1 to the last DBC4A1, max 70 meters

  • E: From DBC4A1 to the furthest indoor monitor, max 30 meters.

 

Capacity

  • Max 8 BDU zones, Max 32 DT monitors each BDU, So max. 256 DT monitors (P.S. If less than 20 monitors in a BDU, could use PC7. If more than 20 monitors in a BDU, should use more powerful PC7H).

  • But for monitors with higher power consumption, the capacity is smaller ---
    Max 8 DX monitors (WIFI monitor) each BDU. And must use DBC4R distributor (not DBC4A1)

    Max 12 DT47MG each BDU.