Vacon 20 CP, Installation, Technical And Maintenance Manual

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1
vacon • 5 Safety
1.3 Danger
1.4 Hot surface warning
The components of the power unit of VACON
®
20 CP drives are live when the
drive is connected to mains potential. Coming into contact with this voltage is
extremely dangerous and may cause death or severe injury.
The motor terminals (U, V, W) are live when VACON
®
20 CP Drive is connected to
the mains, even if the motor is not running.
After disconnecting the AC drive from the mains, wait until the indicators on the
keypad go out (if no keypad is attached, see the indicators on the cover). Wait an
additional 30 seconds before starting any work on the connections of Vacon20
Cold Plate Drive. After expiration of this time, use measuring equipment to abso-
lutely ensure that no voltage is present.
Always ensure absence of voltage before
starting any electrical work!
The control I/O-terminals are isolated from the mains potential. However, the
relay outputs and other I/O-terminals may have a dangerous control voltage
present even when VACON
®
20 CP Drive is disconnected from the mains.
During a coast stop (see the Application Manual), the motor is still generating
voltage to the drive. Therefore, do not touch the components of the AC drive
before the motor has completely stopped. Wait until the indicators on the keypad
go out (if no keypad is attached, see the indicators on the cover). Wait an addi-
tional 30 seconds before starting any work on the drive.
The metal parts of the enclosure may exceed 70°C (158 °F). Do not touch them to
a high risk of being burn.