13
ELECTRICAL DIAGRAMS – EC FANS
-Scheme EC - 7 (Image 8):
Connector Connection Description
KL1
L1
Power - Phase
230 / 1 EN 1:50
(See characteristics on the motor plate)
N
Power - Neutral
PE
PE
Ground
KL2
NO
Status relay, normally opened, closes with alarm
COM
Standard in the status relay
NC
Status relay normally closed, opens with alarm
KL3
RSA
RS485 MODBUS RTU
RSB
GND
Reference for interface (terminal 3 flow regulator ARFIT)
Ain1 U
Analogue input 0-10V, 100kΩ impedance (Terminal 4 flow regulator ARFIT)
+10V
Power for external devices, max. 10mA (terminal 5 flow regulator ARFIT)
Ain1 I
Analogue input 4 -20mA, 100kΩ impedance (Terminal 4 flow regulator ARFIT)
Din1
Digital input 1 (Connect to terminal 2 of the ARFIT flow regulator to enable operation)
Din2
Digital input 2
Din3
Digital input 3
Ain2 U
Analogue input 0-10V, 100kΩ impedance (Terminal 4 flow regulator ARFIT)
+20V
Power for external devices, máx. 50mA (Connect to terminal 1 of the ARFIT flow regulator to
enable operation)
Ain2 I
Analogue input (value definition), 4-20mA, 100kΩ impedance
Aout
Analogue output 0-10V
Image 8