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Part 1:x
IM 701210-05E
Be sure to observe with the precautions below. Not complying might result in injury
or death.
WARNING
• Use the Correct Power Supply
Before connecting the power cord, ensure that the source voltage matches the
rated supply voltage of the instrument and that it is within the maximum rated
voltage of the provided power cord.
• Use the Correct Power Cord and Plug
To prevent the possibility of electric shock or fire, be sure to use the power cord
supplied by YOKOGAWA. The main power plug must be plugged into an outlet
with a protective earth terminal. Do not disable this protection by using an
extension cord without protective earth grounding.
• Connect the Protective Grounding Terminal
Make sure to connect the protective earth to prevent electric shock before
turning ON the power. The power cord that comes with the instrument is a
three-prong type power cord. Connect the power cord to a properly grounded
three-prong outlet.
• Do Not Impair the Protective Grounding
Never cut off the internal or external protective grounding wire or disconnect the
wiring of the protective grounding terminal. Doing so poses a potential shock
hazard.
• Do Not Operate with Defective Protective Grounding or Fuse
Do not operate the instrument if the protective grounding or fuse might be
defective. Also, make sure to check them before operation.
• Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable liquids or vapors.
Operation in such an environment constitutes a safety hazard.
• Do Not Remove Covers
The cover should be removed by YOKOGAWA’s qualified personnel only.
Opening the cover is dangerous, because some areas inside the instrument
have high voltages.
• Ground the Instrument before Making External Connections
Securely connect the protective grounding before connecting to the item under
measurement or to an external control unit. If you are going to touch the circuit,
make sure to turn OFF the circuit and check that no voltage is present.
• Precautions to Be Taken When Using the DC Power Supply
• Make sure to perform protective earth grounding to prevent electric shock.
•
Connect the DC power cord after checking that the power switch of the
instrument is turned OFF. If you connect the power cord with the power switch
turned ON, sparks may be emitted and can lead to fire.
• Precautions to Be Taken When Using the Modules
• Do not apply input voltage exceeding the maximum input voltage, withstand
voltage, or allowable surge voltage.
•
To prevent the possibility of electric shock, be sure to furnish protective earth
grounding of the DL750/DL750P.
•
To prevent the possibility of electric shock, be sure to fasten the module screws.
Otherwise, the electrical protection function and the mechanical protection
function will not be activated.
•
Avoid continuous connection under an environment in which the allowable surge
voltage or greater voltage may occur.
Safety Precautions