ABB ACS 502 Series, Installation & Start-Up Manual

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ACS 502 Installation & Start-up Manual 5-1
Chapter 5 – Start-up Procedure
This chapter explains how to inspect the installation and how to start-up the
ACS 502. Prerequisite information required for start-up was provided in
Chapter 2 – Overview of the ACS 502/504.
Safety Precautions
Before start-up, observe the following:
The components inside the converter module are at DC Bus potential
(1.35 x V
IN
) when the ACS 502 is connected to supply voltage. This voltage is
extremely dangerous and can cause death or serious injury.
When the supply voltage is disconnected from the input terminals U
1
, V
1
, W
1
(L
1
, L
2
, L
3
), it will take about five minutes before the DC Bus capacitors are
discharged to a safe voltage.
To ensure that the voltage level is safe, measure the voltage between positive
(+) and negative (-) DC Bus Terminals UDC+ and UDC- (refer to Figure 4-7).
Meter must be rated for 1000 VDC. Also measure between UDC+ and chassis
ground.
The Control Interface Card and Option Cards are isolated from the main
circuit, but dangerous voltages may be present at relay contact terminals.
Always check for high voltage at Terminals X50:21 – 29 before working on
the Control Interface or Option Cards.
WARNING! When the ACS 502 is connected to the line power, the Motor
Terminals U
2
, V
2
, and W
2
(T
1
, T
2
, T
3
) and the Brake Terminals UDC+, UDC-,
and BR are live even if the motor is not running. Do not make any
connections when the ACS 502 is connected to the line. Disconnect and lock
out power to the drive before servicing the drive. Failure to disconnect power
may cause death or serious injury.
Figure 5-1 shows the start-up checklist.