ABB ACH550-UH User Manual page 33

ACH550-UH User's Manual
Apply power
Always re-install the covers before turning power on.
WARNING! The ACH550 will start up automatically at power up, if the external run
command is on.
1. Apply input power.
When power is applied to the ACH550, the green LED comes on.
WARNING! Even when the motor is stopped, dangerous voltage is present at the
power circuit terminals U1, V1, W1 (L1, L2, L3) and U2, V2, W2 (T1, T2, T3) and,
depending on the frame size, UDC+ and UDC-, or BRK+ and BRK-.
Note: Before increasing motor speed, check that the motor is running in the desired
direction. To change rotation direction, switch motor leads as shown below. Power
circuit terminal designation and location varies depending on the frame size and
some terminals are not used (UDC+ and UDC-, or BRK+ and BRK-). Refer to pages
1-20
Input
Input
and for specific terminal layouts.
1-21
Drive
U1 V1
L1
L2
L3
GND
Drive
U1 V1
L1
L2
L3
GND
W1 GND
To change rotation direction,
switch motor leads
W1
GND
U2 V2 W2
Motor
U2 V2 W2
Motor
1-29
FM
Installation