Read all the instructions in the manual carefully before use and strictly follow them.
Keep the manual for future references.
Lesen Sie die ganze Anleitung vor dem Betrieb aufmerksam durch und folgen Sie beim Betrieb des Geräts den
Anweisungen. Bewahren Sie diese Bedienungsanleitung zum späteren Nachlesen griffbereit auf.
THIS CLASS A DIGITAL DEVICE COMPLIES WITH
PART15 OF THE FCC RULES AND THE CANADIAN
ICES-003. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS.
(1) THIS DEVICE MAY NOT CAUSE HARMFUL
INTERFERENCE, AND
(2) THIS DEVICE MUST ACCEPT ANY
INTERFERENCE RECEIVED, INCLUDING
INTERFERENCE THAT MAY CAUSE
UNDERSIGNED OPERATION.
CET APPAREIL NUMÉRIQUE DE LA CLASSE A
EST CONFORME À LA NORME NMB-003 DU
CANADA.
Magnescale Co., Ltd. products are designed in full consideration of safety. However, improper
handling during operation or installation is dangerous and may lead to fire, electric shock or other
accidents resulting in serious injury or death. In addition, these actions may also worsen machine
performance.
Therefore, be sure to observe the following safety precautions in order to prevent these types of
accidents, and to read these “Safety Precautions” before operating, installing, maintaining,
inspecting, repairing or otherwise working on this unit.
Warning indication meanings
The following indications are used throughout this manual, and their
contents should be understood before reading the text.
Warning
Failure to observe these precautions may lead to fire, electric shock
or other accidents resulting in serious injury or death.
Caution
Failure to observe these precautions may lead to electric shock or
other accidents resulting in injury or damage to surrounding objects.
Note
This indicates precautions which should be observed to ensure
proper handling of the equipment.
PL20C
Symbols requiring attention
English
CAUTIONELECTRICAL
SHOCK
Symbols prohibiting actions
DO NOT
DISASSEMBLE
Symbols specifying actions
UNPLUGGING
(E) I
English
Warning
• Do not use this unit with voltages other than the specified supply voltage as this may
result in fire or electric shock.
• Do not perform installation work with wet hands as this may result in electric shock.
• Do not disassemble or modify the unit as this may result in injury or damage the
internal circuits.
Caution
• Be sure to check the machine and device conditions to ensure work safety before
working on the machine.
• Be sure to cut off the power supply, air and other sources of drive power before
working on the machine. Failure to do so may result in fire or accidents.
II (E)
• When turning on the power supply, etc. to operate the machine, take care not to catch
your fingers in peripheral machines and devices.
PL20C
Operating and Installation Precautions
Operating cautions
• Do not open the cover of this device or put your hand inside.
Otherwise the internal circuit may be broken by static
electricity.
• This device is not explosion-proof. Do not use it in the
atmosphere of flammable gas.
• This device is not vibration resistant. Do not use it in a place
where it is subject to shocks. (Excluding the head assembly)
• Do not allow two scales to contact or overlap each other.
When installing, keep a read head and a scale unit as far as
possible from a strong magnetic force. (It is adequate if the
magnetic force does not exceed about 30 × 10
• When using this system, it is recommended that the scale unit
be installed on the movable side and the head installed on the
stationary side.
• The interface unit is pre-adjusted, and so never disassemble it.
Accuracy can no longer be guaranteed if they are
disassembled.
-4
T.)
Installation
• Use the PL20C in the temperature range of 0 to 45 °C / 32 to
113 °F. Do not expose it to the sunlight or source of heat. A
well-ventilated place is preferable.
• Install the PL20C at least 0.5 m away from noise sources such
as large-power relays, high-voltage sources, large-current
switch, Inverter high electric power.
• Separately route the head cable unit from the power line.
• When the system is exposed to cutting chips, oil and coolant,
provide a cover. Some coolants may affect the functions of
product. Please provide necessary protections.
English
PL20C
(E) III
Noise Prevention
When installing the scale unit, observe the following to prevent noise interference from other equipment.
• Apply preventive measures to relays, solenoids and motors connected to the scale unit against noise interference.
English
DC relay
Diode
AC relay, DC relay
Varistor
AC relay, solenoid, motor
Spark killer
3-phase motor
3-phase
Spark killer
• Take preventive steps when the noises from other equipment may disturb the power supply line to the scale unit.
Counter unit
Noise filter
AC input
IV (E)
PL20C
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