Mitsubishi Electric MELSERVO MRJ2S-B, Instruction Manual

Page: 10 / 200

IV
Special safety instructions
The following notes on sources of danger should be interpreted as general guidelines for servo
drives in association with other devices. These precautions must always be observed in the
design, installation and operation of all control systems.
m
DANGER:
●
Observe all safety and accident prevention regulations applicable to your specific
application. Installation, wiring and opening of the assemblies, components and
devices may only be performed with all power supplies disconnected.
●
Prior to carrying out any installation work, wiring and opening assemblies,
components and devices you must disconnect the power supply to the units and
wait for at least 10 minutes. Prior to touching anything measure the residual voltage
in condensers, etc. with a voltmeter to ensure that the voltage has been sufficiently
reduced.
●
Never touch the servo amplifier or servo motor or the optional brake resistor during
or shortly after operation whilst they are still live. The components can get very hot
– there is a risk of getting burned.
●
Assemblies, components and devices must always be installed in a shockproof
housing fitted with a proper cover and protective equipment.
●
Devices with a permanent connection to the mains power supply must be integrated
in the building installations with an all-pole disconnection switch and a suitable
fuse.
●
Ground the servo amplifier and servo motor securely.
●
Check power cables and lines connected to the equipment regularly for breaks and
insulation damage. If cable damage is found, immediately disconnect the equipment
and the cables from the power supply and replace the defective cabling.
●
Before using the equipment for the first time check that the power supply rating
matches that of the local mains power.
●
EMERGENCY OFF facilities in accordance with VDE 0113 must remain effective in
all operating modes of the servo motor. The EMERGENCY OFF facility reset function
must be designed so that it cannot cause an uncontrolled or undefined restart.
●
The EMERGENCY OFF facility must be wired so that the electromagnetic brake is
also activated during an EMERGENCY OFF.
●
Residual current protective devices pursuant to DIN VDE Standard 0641 Parts 1–3
are not adequate on their own as protection against indirect contact for installations
with servo amplifier. Additional and/or other protection facilities are essential for
such installations.