For Safe Use; Before Starting - Mitsubishi Electric PLK - G Series Technical Manual

■ For safe use

Always observe the following matters to safely use the Mitsubishi industrial electronic sewing machine PLK-G
Series.

Before starting

Before using this control unit, read all of the technical manuals carefully, and correctly use the unit
following the manual. Also read the "Mitsubishi Industrial Sewing Machine Technical Manual <Sewing
Machine Head>" for details on the general configuration and sewing machine head.
Application and purpose
This control unit is designed to drive and control the Mitsubishi industrial electronic sewing machine
PLK-G Series. Do not use this control unit for other applications or purposes. Do not use this control unit
until it has been confirmed that safety measures have been accurately taken for the installed electronic
sewing machine head section.
Working environment
Do not use this control unit in the following type of environment.
(1) Power voltage
* Where the voltage fluctuation exceeds ±10% of the rated voltage.
* Where the specified power capacity (refer to page [4]-2 "5. Power capacity") cannot be ensured.
(2) Magnetic noise
* Where strong fields or magnetic fields are generated, such as near a high-output high frequency
oscillating machine or high frequency welder.
(3) Temperature and humidity
* Where the ambient temperature is 35°C or more and 5°C or less.
* Where the unit will be subject to direct sunlight, or outdoors.
* Near sources of heat, such as heating appliances.
* Where the relative humidity is 45% or less, or 85% or more, and where dew may condense.
(4) Atmosphere
* In an atmosphere containing dust or corrosive gases, etc.
* In a flammable gas or explosive environment.
(5) Vibration
* If excessive vibration could occur when installed on the sewing machine, separately install the
control box.
■ Installation
Control box
Correctly install the control box according to this manual.
Accessories
Always disconnect the control unit from the main power supply before installing the accessories listed in
this manual. (Turn the power switch OFF, and disconnect the plug from the socket (power supply line).)
Cable
(1) Lay the connection cables so that excessive force will not be applied during operation. Do not
excessively bend the cables.
(2) Cables laid near operating machine sections must be separated by at least 25mm.
(3) Before connecting the power cable to the control box, confirm that the power voltage matches the
specifications given on the control box's rating nameplate and factory shipment voltage nameplate.
Connect the cable to the indicated positions, and then supply the power. When using a power unit,
connect the cable to the power unit and supply the power. In addition, when using a power unit,
confirm that the power voltage matches the specifications given on the power unit's rating nameplate.
Turn the power switch OFF before making any connections.
Grounding
Always ground the power cord's grounding wire.
[1] For safe use
[1] - 1