11.2.2 Connecting the VFD to the power supply
CAUTION
Automatic startup
Minor or moderate personal injury
● Make sure the pump has been correctly installed and is ready to be started
before you switch on the power supply.
Read the supplier manual "BU 0180" for the VFD supplied with the product.
The VFD is connected to the pump on delivery, so you only need to connect the power supply.
As soon as the power supply is connected to the VFD and switched on, the pump can automati-
cally start operating depending on the potentiometer setting. Make sure the power supply to the
VFD is only switched on when the pump is ready for startup and operation.
There is no need to take special safety measures on the mains input side of the frequency con-
verter. We advise you to use ordinary mains fuses and a main switch or a circuit breaker.
Isolate the connector from the power supply simultaneously for all the poles (L1/L2/L2 or L1/N).
Requirements for the power cable cross section:
•
0.2 - 4/6 mm
2
rigid / flexible cable AWG 24-10
•
To loop the mains voltage up to a cable cross section of 2 x 2.5 mm
2
, use double-wire end
sleeves.
10V 1
1
AIN1 14
AIN2 16
GND 40
24V 43
DIN1 21
DIN2 22
DIN3 23
DO1 1
GND 40
DO2 3
GND 40
SYS+77
SYS+78
L3 L2/N L1 PE
1
2
Fig. 11.2.2-1 Electrical connection of the VFD
Pos.
Description
1
VFD mains connection
2
VFD terminals
1. Switch off the power supply.
2. Unscrew the screws of the front cover of the VFD power unit and remove the front cover.
DMX 221 | |
62