1-/2-/3-speed fan | ECM fan |
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N1 | RDF280.VXX.. |
L, N | AC 230 V power supply, mains and neutral |
Q1, Q2, Q3 | 1-/2-/3-speed fan output (relay output), AC 230 V |
Q5 | Output, external/internal circulation, AC 230 V |
Q14 | SPST relay output (NO) (AC 230 V) |
Y50 | DC 0…10 V output |
M2 | Input reference ground for Y50 |
X1 | Multifunctional input, e.g., sensor or switch |
M1 | Input reference ground for X1 |
A, B | Modbus terminals, no isolation |
REF | Modbus reference ground |