Wilo MVI 2..-6 Betriebsanleitung Seite 133

ENGLISH
4.1.1 Components of the control system
Component Fig./
Pos.
Main switch 1a/1b
Pos. 1
Controller 1a/1b
Pos. 2
Power pack 1a/1b
Pos. 3
Frequency convertor 1a/1b
Pos. 4
Motor filter 1a/1b
Pos. 5
Motor protecting 1a/1b
switch Pos. 6
Circuit-breaking 1a/1b
elements Pos. 7
Power boards:
3 a/3 b,
Pos. 1
3 a/3 b,
Pos. 2
3 a/3 b
Pos. 3
2Pp mains
2Pp mains/
control
2Pp mains/control
connecting board
Pos. 4
Pos. 5
34
Figure 1a as example for
CR 1.1 ... 4.0 -4
P
Controls up to 6 drive units (see Chapter 4.2.1 and 4.2.2)
4-line LCD showing the set values of the unit combination, the setpoints and operating parameters
Supplies the control unit with the necessary control voltage
Different ratings according to the motor output
Control range 20 to 50 Hz
Smoothing of voltage characteristic given by frequency convertor
ESA sits on power board
Set via menu
for frequency convertor (FC) and drives
P
for mains and drive connection, differs according to unit design
Per board connection possibility for 2 drives (3 boards for 6 pumps).
– Contactors or relays for controlling the drives
– ESA: electronic overcurrent release for each pump
– Switch: "Emergency" (Not)
4 a
"Off" (Aus)
"Release" (Freigabe)
Gravity switch for addressing pumps (1/2, 3/4, 5/6)
4 a
Supply terminals for pumps
3 a For drives without speed control
(without frequency convertor)
3 b For drives with speed control, such
as 2Pp mains, but with frequency
convertor (FC) control
4 a
Description
4 kW
2
ON/OFF switch
4 kW
2
Drive runs directly off mains without protection
"External Off" circuitry is bypassed.
Pump blocked for controller.
Drive released for controller.
Figure 1b as example for
CR 5.5 ... 22 -4
P 5.5 kW
2
Set TSA to 0.58 x rated motor current
P 5.5 kW
2
For drives with or without speed control.
Specification in menu.
Terminals for the control of frequency convertors and
Y- protective combination
Potentiometer for duration of star operation, adjustable
from 1 - 6 s