Warnings; Cautions - Elmo Cello Installation Manual

Cello Installation Guide
MAN-CELIG (Ver. 1.5)
1.1

Warnings

To avoid electric arcing and hazards to personnel and electrical
contacts, never connect/disconnect the servo drive while the power
source is on.
Power cables can carry a high voltage, even when the motor is not in
motion. Disconnect the Cello from all voltage sources before it is
opened for servicing.
After shutting off the power and removing the power source from
your equipment, wait at least 1 minute before touching or
disconnecting parts of the equipment that are normally loaded with
electrical charges (such as capacitors or contacts). Measuring the
electrical contact points with a meter, before touching the equipment,
is recommended.
1.2

Cautions

The Cello servo drive contains hot surfaces and electrically-charged
components during operation.
The maximum DC power supply connected to the instrument must
comply with the parameters outlined in this guide.
The Cello can operate only through an isolated power source, using an
isolated transformer and a rectifier circuit. Power to this device must
be supplied by DC voltage, within the boundaries specified for the
Cello. High voltages may damage the drive.
The DC power supply voltage range is defined in Table A.3.
Safety margins must be considered in order to avoid activating the
under- or over-voltage protection against line variations and/or
voltage drop under load. The transformer should be able to deliver the
required power to the drive (including peak power) without
significant voltage drops (10% maximum). While driving high-inertia
loads, the power supply circuit must be equipped with a shunt
regulator; otherwise, the drive will be disabled whenever the
capacitors are charged above the maximum voltage.
Before switching on the Cello, verify that all safety precautions have
been observed and that the installation procedures in this manual
have been followed.
Safety Information
1-2