Installation - Grundfos LT 200 Montage- Und Betriebsanleitung

3. Installation

Warning
The electrical installation must 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 clamp to
Caution
the earthed metal back plate of the box
where the LT 200 is to be installed.
6
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