Xylem IM167 R8 Aquavar CPC (Centrifugal Pump Control) - Manual (Page 29)

29
Power Connections
WARNING! Ensure the motor is compatible for use with the AQUAVAR. The AQUAVAR
must be installed by a competent person in accordance with the considerations
defined in “Preparing for Installation” on page 15. If in doubt, contact your local AQUAVAR
sales or service office. Always consult the NEC for information.
• Refer to the following table to complete the power connections. If appropriate, also
perform the instructions for the braking and floating networks.
Terminal Description Note
U1, V1, W1* 3-phase power supply input
“Input Power (Mains) Connection”
on page 136.
PE Protective Ground Follow local rules for cable size.
U2, V2, W2 Power output to motor
“Motor Connection” on
page 136.
* NOTE: The AQUAVAR (208…240V series) can be used with a single phase supply, if output current is derated by 50%.
For single phase supply voltage, connect power at U1 and W1. Refer to page 26.
Floating Networks
For floating networks (also known as IT, ungrounded or high impedance networks):
• Disconnect the internal RFI filter by removing both the EM1 and EM3 screws (frame sizes
R1…R4, see page 24), or F1 and F2 screws (frame sizes R5…R6, see page 25).
• Where EMC requirements exist, check for excessive emission propagated to neighboring
low voltage networks. In some cases, the natural suppression in transformers and cables is
sufficient. If in doubt, use a supply transformer with static screening between the primary
and secondary windings.
• Do NOT install an external filter. Using an RFI filter grounds the input power through the
filter capacitors, which could be dangerous and could damage the unit.
Control Connections
To complete the control connections, use:
• Following tables
• “Single/Multipump”
• “Complete Parameter Descriptions”
• Cable recommendations in “Control Cables”
INSTALLATION
(Frames R1-R6)