Design - Grundfos LC 221 Manual De Instrucciones

Nameplate
The controller type, voltage variant, etc. are stated in the type
designation on the nameplate situated on the side of the control
cabinet.
1
2
Type LC 221.1.230.1.10.30/150 MPU
3
98189707
Prod.-No.
4
1221 Serial no.
P.c.
5
Phases 1
6
I 10 A
Pump max
7
U 250
V
contact max
I 16
A
Fuse max
8
O
T 0 C
Amb min
I
c < 10 kA
IP55
Fig. 3 Example of an LC 221 nameplate
Pos. Description
1 Type designation
2 Product number
3 Production code (year, week)
4 Number of phases
5 Maximum pump input current
6 Maximum voltage at potential-free contact
7 Maximum backup fuse
8 Minimum ambient temperature
9 Version
10 Serial number
11 Rated voltage
12 Power consumption
13 Maximum current at potential-free contact
14 Weight
15 Maximum ambient temperature
16 Frequency
9
10
V01
11
0012
12
U 220-240 V
13
P 3 W
max
14
I 2
A
contact max
kg
G 5.2
15
T 40 O
C
Amb max
16
f 50 Hz
Made in Germany

4.1 Design

The LC 221 level controller incorporates the necessary
components to control and protect the pumps, such as relays and
capacitors for single-phase motors, contactors for three-phase
motors and additional motor-protective circuit breaker.
The operating panel offers a user interface with operating buttons
and a display for indication of operating conditions and fault
indications.
The controller has an integrated piezoresistive level sensor which
is activated by compressed air directly via the pressure tube
inside the collecting tank and terminals for power supply,
connection to the pump and the inputs and outputs mentioned in
section 4. Product description.
The front cover is closed by four bayonet fastenings with quarter
turn locks. On the left side, the locks are extended and connected
to the cabinet bottom with hinge strings. The cabinet can be
mounted on a wall without opening it (this does not apply to the
Y/D version).
Operating panel
1 3
2
Fig. 4 Operating panel
Pos. Description
1 Display
2 Operating buttons
3 Status LEDs
4 ON-OFF-AUTO selector switch
4
7