Yokogawa DA100 - Manual (Page 47)

IM DA100-01E 2-26
When Using an Adapter for Direct Wiring to the Power Supply
Before connecting the power supply to the DA100/DS400/DS600, make sure to comply with the
following warnings. Failure to do so may cause electric shock or damage to the instrument.
WARNING
• Connect the power wires only after confirming that the power supply is
OFF to prevent electric shock.
• To prevent fire, use 600V PVC insulated wire (AWG18) for power and
ground wiring (cross sectional area of 0.83 mm 2 or thicker, anti-
galvanic corrosion finish, insulation thickness should be more than 0.8
mm, insulation resistance ahould be more than 50M
Ω
Km at 20
°
C,
approved EN60 320 (VDE0625)), or equivalent cables.
• Units equipped with screw type terminals should only be used in panel
installations. Using such a unit as a floor-installation or rack-mounting
is extremely dangerous.
• Before turning ON the power supply, always ground the protective
ground terminal. Do not use the function rounding terminal (below the
power switch) as protective grounding.
• For AC power and ground wiring, use “crimp on” lugs (for 4mm screws)
with insulation sleeves. Make sure that the crimp-on tool must be one
specified by the crimp-on lugs manufacture, and that the crimp-on lugs and tool
must be matched to the wire size.
• To prevent electric shock, do not touch the terminals after wiring.
Connecting Procedure
1 Verify that the power switch of the DA100/DS400/DS600 has been turned OFF.
2 Connect the adapter to the power connector of the DA100/DS400/DS600.
3 Fasten the power supply wires and the protective ground wire to the power terminals. Make
sure to apply the clamp filter (standard accessory) to the power wires. This is to eliminate the
electric emmission.
L
N
Protective ground wire
Power supply
wires
Cover
Power supply terminal
Screw for fastening the cover
Switching the Power ON/OFF
Pressing the “|” side of the power switch results in switching the power ON, while pressing the
“O” side results in switching the power OFF.
Note
• Before turning the power ON, verify that each unit is installed properly and that the power cord is
connected correctly.
• When the power switch is turned ON, but the status indicator doesn’t light up, turn the power off and
verify the following . If even after verification, the indicator doesn’t light up, contact your nearest
Yokogawa sales representative. Addresses may be found on the back cover of this manual.
• Verify if the power cord is connected properly.
• Verify if the power supply voltage lies within the range as specified on the previous page.
• When the power switch is turned ON, and the status indicator flashes in 1-second intervals, the
communication module is not properly connected, and you should verify this. If the status indicator
flashes in other intervals, an internal error has occurred. Turn the power switch OFF and carry out the
verification as described above. If no changes appear after after some time after having turned the power
ON again, contact your nearest Yokogawa sales representative. Addresses may be found on the back
cover of this manual.
• When several sub-units are connected, and the power is turned off/on of one of them, the other connected
sub-units which are further away from the main unit will not be recognized anymore for some time.
2.8 Connecting the Power Cord and Turning the Power ON/OFF