Installation - Grundfos LT 200 Instrucciones De Instalación Y Funcionamiento

3. Installation

Warning
The electrical installation should be
carried out by an authorised person in
accordance with local regulations and
the relevant wiring diagram.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
Connect the LT 200 as shown below.
L N
250 mA T
230 VAC 50/60Hz
Fig. 1 Connections to LT 200
LC, LC,
LT 200
LCD 108 LCD 110
L - -
N - -
U - -
B
I - -
O
1 12 12
2 22 22
3 32 32
4 42 42
G 31 98
Warning
Caution
Install an external fuse of 250 mA T as
shown in fig. 1.
Connect a 2-wire pressure transmitter with an output
current of 4-20 mA between terminals Ub and Io. Ub
delivers a nominal output voltage of 24 VDC.
Connect the screen of the cable from
the pressure transmitter via a metal
Caution clamp to the earthed metal back plate
of the box where the LT 200 is to be
installed.
Pressure transmitter
Other
CU 21X
connections
-
230 V
-
-
4-20 mA
-
1 -
2 -
3 -
4 -
G -
U I 1
B O
+
1
4-20 mA
LT 200
CU 351
Fig. 2 Earthing the cable screen
2 3 4 G
2 3 4 G
9