03 POWER ELECTRONICS AND CABINET FEATURES
3BHS842007 E01 REV C
ACS6080
USER MANUAL
3.2.6.1
Cooling circuit
The water cooling system distinguishes two circuits for dissipating heat
losses (Fig. 3-15):
• Internal cooling circuit:
circulates coolant (distilled/deionized
cooling liquid) and transfers the heat losses of the main power
components to the exterior. The internal cooling circuit also
includes - among the other components - the water treatment
circuit, which continuously deionizes the cooling liquid to keep
conductivity at a low level.
• External cooling circuit:
transfers the heat losses from the water-to-
water heat exchanger to the exterior.
The water cooling units are pressurized and not open to
atmospheric pressure.
Figure 3-15 Cooling circuit in an ACS6080 drive
3.2.6.2
External cooling connection
Two flanges connect the external cooling circuit water pipes to the
cooling unit. They are part of the shipment. The feeding and return pipe
can either be entered through the top, bottom, side or back. The desired
pipe entry is specified when ordering the drive.
(1) Return pipes
(2) LSU
(3) CBU
(4) INU
(5) WCU
(6) Heat exchanger
(7) External cooling circuit
(8) Internal cooling circuit
(9) Feeding pipes
1
2
3
4
5
6
7
8
9
