Meitronic Lfc - Electrical Switching And Cabling Plans - flamco meibes Logotherm MeiFlow M LFC Montage- Und Serviceanleitung

4.2

MeiTronic LFC - electrical switching and cabling plans

MeiTronic LFC
controller
Note:
Please follow the
separate instructions on
the MeiTronic LFC
controller.
Legend
Low voltage, max. 24 VAC / DC
- Earth bridge on the lower ground terminal block
S1 Temperature sensor 1 (flow line)
S2 Temperature sensor 2 (return line)
S3 Temperature sensor 3 (optional)
S4 Temperature sensor 4 (external sensor)
S5 Differential pressure sensor
V1 0-10V / PWM signal output
V2 0-10V / PWM signal output
V3 0-10V
Terminal block/voltage output
+
max. load from external devices 24V/6W
The earth cable is connected to the lower grey
terminal block.
On the controller PCB:
CAN CAN Bus connection (1=high, 2=low)
CAN CAN Bus connection (1=high, 2=low)
Last updated: Oct-20
dP
sensor
max. 55
Side for mains voltage
Side for low voltage
(e.g. relay)
(e.g. temperature sensor)
Supply voltages, 230 VAC 50 - 60 Hz
N
L
L'
R1
R2
R3i/R3
The neutral cable N is connected to terminal block N.
The protective earth PE is connected to the PE metal terminal
block!
PG MeiFlow M LFC
Heating circuit pump
Type GF Magna 3
Outside
temp.
sensor
We recommend using flexible
cables with wire end ferrules
for the controller wiring.
For service/ maintenance
work we recommend the
provision of a defeat device
for all-pole and all-round
separation according to DIN
VDE 0105-100!
Fig. 1
Neutral cable N
Grid external conductor L
230 VAC power supply for 0-10V/PWM pumps
Relay 1
Relay 2
Relay 3i/R3 (potential-free contact)
Servomotor
for MC
-ENG- Page 23