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Safety instructions
3ADW000195R0501 DCS800 Service Manual e e
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
and/or damage to the equipment.
WARNING!
•
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.
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 C+ and D- 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 resistance or voltage withstand tests
on the drive or drive modules.
• Isolate the motor cables from the drive when testing the insulation
resistance or voltage withstand of the cables or the motor.
• When reconnecting the motor cable, always check that the C+ and
D- cables are connected with the proper terminal.
Note:
•
The motor cable terminals on the drive are at a dangerously high
voltage when the main 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 relay outputs of the drive
system (e.g. SDCS-IOB-2 and RDIO).
• DCS800 with enclosure extension: Before working on the drive,
isolate the whole drive system from the supply.
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