Safety instructions
6
Installation and
maintenance work
These warnings are intended for all who work on the drive, motor cable or motor.
WARNING!
Ignoring the following instructions can cause physical injury or death, or
damage to the equipment:.
•
Only qualified electricians are allowed to install and maintain the drive.
•
Never work on the drive, motor cable or motor when main power is applied.
After switching off the power, always wait for 5 minutes to let the intermediate
circuit capacitors discharge before you start working on the drive, the motor or
the motor cable.
Always ensure by measuring with a multimeter (impedance at least 1 Mohm)
that:
1. Voltage between drive input phases L1, L2 and L3 and the frame is close to
0 V.
2. Voltage between terminals UDC+ and UDC- and the frame is close to 0 V.
•
Do not work on the control cables when power is applied to the drive or to the
external control circuits. Externally supplied control circuits may cause
dangerous voltages inside the drive even when the main power on the drive is
switched off.
•
Do not make any insulation or voltage withstand tests on the drive or drive
modules.
•
When reconnecting the motor cable, always check that the phase order is
correct.
•
After maintaining or modifying a drive safety circuit or changing circuit boards
inside the module, retest the functioning of the safety circuit according to the
start-up instructions.
•
Do not change the electrical installations of the drive except for the essential
control and power connections. Changes may affect the safety performance or
operation of the drive unexpectedly. All customer-made changes are on the
customer's responsibility.
Note:
•
The disconnecting device (means) of the drive does not isolate the input cables
and busbars from the main AC supply. Before working inside the cabinet,
isolate the input cables and busbars from the main supply with the
disconnecting device at the distribution board or with the disconnector of the
supply transformer.
•
The motor cable terminals on the drive are at a dangerously high voltage when
the input power is on, regardless of whether the motor is running or not.
•
The brake control terminals (UDC+, UDC-, R+ and R- terminals) carry a
dangerous DC voltage (over 500 V).
Summary of Contents for ACS800-U7
Page 1: ...ACS800 Hardware Manual ACS800 07 Drives 45 to 560 kW ACS800 U7 Drives 50 to 600 hp ...
Page 4: ......
Page 28: ...Operation principle and hardware description 28 ...
Page 51: ...Planning the electrical installation 51 ...
Page 60: ...Planning the electrical installation 60 ...
Page 76: ...Electrical installation 76 ...
Page 84: ...Motor control and I O board RMIO 84 ...
Page 112: ...Maintenance 112 ...
Page 138: ...Dimensional drawings 138 Frame sizes R5 and R6 64778340_1 5 K ...
Page 139: ...Dimensional drawings 139 Frame sizes R7 and R8 68749930_1 7 C ...
Page 140: ...Dimensional drawings 140 IP54 and IP54R units of frame sizes R7 and R8 68749930_6 6 C ...
Page 148: ...3AFE64702165 Rev H EN 2012 09 19 Contact us www abb com drives www abb com drivespartners ...