Installation Instructions MB-Secure 1000/2000/3000/4000/5000/6000 25
- Do not install any cables with interferences pulses in parallel with the BUS cables.
- Maintain the minimum distance from high current cables running in parallel, in accordance with VDE
guidelines.
- Install according to VDE guidelines (VDE 0800 Part 4).
- Only use cables and wires shielded against HF interference (J-Y(ST)Y or J-H(ST)H.
- For the data cable, only one wire must be used respectively along the entire length of the cable. The
second wire must be set to 0 V.
Installation guidelines BUS-2
The following framework conditions must be complied with in the installation of BUS cables:
- Only use the specified cable type – J-Y(ST)Y / J-H(ST)H.
- Control lines or lines to signal devices should not be fed into the same cable as the BUS wires.
- The data line should have a maximum line resistance of 65 Ω.
- In designing the cable cross-sections from +12 V DC and 0 V, care must be taken to ensure that the
maximum loss of potential does not exceed 0.5 V DC.
- The maximum cable length between the control panel and the farthest BUS user is 1000 meters.
- For bus data cables, the 2nd wire in the respective pair of wires must always be laid to 0 V.
- Always increase the cable cross-section for +12 V DC and 0 V using complete pairs of wires so that
one wire is always connected to +12V DC and the second wire to 0 V.
- U_ext. = additional line for power supply to BUS users with higher power consumption needs.
- Separate the wires from the shielding only to the extent required. Keep the shield connection as
short as possible. See the chart (shield connection) below.
Special notes on BUS-2 installation
- For the data cable, only one wire must be used respectively along the entire length of the cable. The
second cable must be set to 0 V.
- The maximum line length between the control panel and the farthest BUS-2 user is 1000 meters.
You can find a detailed explanation of the installation in our brochure “Electrical installation of hazard
detection systems". (P03061-15-000-XX)
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