3.1.2.3.2.4
Wiring to several circuits in parallel with, for each circuits, 2 fans whose
airflows are independent
K1 closed soft start
K1 open soft stop
K2 0-10V signal for fan 1, maximum
impedance allowed: 1500 Ω
K3 0-10V signal for fan 2, maximum
impedance allowed: 1500 Ω
Caution: use gold-plated contacts only.
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