Installation And Maintenance Work - ABB DCS800 Hardware Manual

6

Installation and maintenance work

These warnings are intended for all who work on the drive, motor cable or motor.
Ignoring the instructions can cause physical injury or death.
Only qualified electricians are allowed to install and maintain the drive.
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Note:
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Safety instructions
Never work on the drive, motor cable or motor when main power is applied.
Always ensure by measuring with a multimeter (impedance at least 1 Mohm)
that:
1. Voltage between drive input phases U1, V1 and W1 and the frame is close to
0 V.
2. Voltage between terminals C1 and D1 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 C1 and D1 terminal
is correct.
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.
Depending on the external wiring, dangerous voltages (115 V, 220 V or 230 V)
may be present on the terminals of relay outputs SDCS-IOB-2, RDIO.
DCS800 with enclosure extension: Before working on the drive, isolate the
whole drive from the supply.
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