Basic Documentation

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Siemens VAV compact controller G..B181.1E/3 | VAV modular controller ASV181.1E/3 CE1P3544en
Smart Infrastructure 2021-10-26
Operating
voltage
Power
consumption
Perm. voltage drop for line...
1 (G), 2 (G0)
AC 24 V
3 VA
4 % of AC 24 V
Determine the cable lengths for 4 VAV compact controllers operating on AC 24 V.
Decisive for sizing the cable are only the AC currents on lines 1 (G) and 2 (G0).
Maximum permissible voltage drop = 4 % per line.
• Consumption = 4 x 3 VA = 12 VA
• Line current = 4 x 0.125 A = 0.5 A
Permissible single cable length for G and G0:
• 164 m with a cross-sectional area of 1.5 mm
2
• 274 m with a cross-sectional area of 2.5 mm
2
Example: Power
consumption and
permissible voltage drop
(1 VAV compact
controller)
Example: Parallel
connection of 4 VAV
compact controllers