L, N | AC 230 V power supply, mains and neutral |
Q1 | Output, fan speed 1, AC 230 V |
Q2 | Output, fan speed 2, AC 230 V |
Q3 | Output, fan speed 3, AC 230 V |
Y1 | Output “Valve”, AC 230 V (NO), SPST |
Y2 | Output “Valve”, AC 230 V (NO), SPST |
X1 | Multi-functional input for temperature sensor (e.g. QAH11.1) or potential-free switch (keycard) |
M | Measuring neutral for sensor and switch |
MB+ | RS485 Modbus connection |
MB- | RS485 Modbus connection |
REF | RS485 signal/common ground (differential common) |