N1 | RDF280.VX.. |
L, N | AC 230 V power supply, mains and neutral |
L | AC 230 V mains input (both L internally connected) |
V1 | On/Off valve |
X1 | Floor temperature limitation sensor input |
M | Sensor reference input |
Q11 | SPDT relay input |
Q12 | SPDT relay output, normally closed (AC 24…230 V) |
Q14 | SPDT relay output, normally open (AC 24…230 V) |
REF | Modbus reference ground |
A+, B- | Modbus terminals, no isolation |