Yokogawa DR240 - Manual (Page 76)

3-31 IM DR232-01E
3
Installation and Wiring
When Using an Adapter for Direct Wiring to the Power Supply
DR242/DS400/DS600 (when connecting wires to screw terminals)
This applies only to products with power inlet W suffix code.
Follow the warnings below to avoid electric shock or damaging the instrument.
WARNING
• Connect the power wires after checking that the power supply is turned
off to prevent electric shock.
• To prevent fire, use 600 V PVC insulated wire (AWG18) for both power
and ground wiring (cross section of 0.83 mm 2 or thicker, anti-galvanic
corrosion finish, insulation thickness more than 0.8 mm, insulation
resistance more than 50 M
Ω /km at 20 ° C, approved EN60 320
(VDE0625)), or equivalent cables.
• Units equiped with screw type terminals should only be used in panel
installations.
• Before turning on the power, always ground the protective ground
terminal. Do not use the function grounding terminal ( marked
terminal) under the power connecting part as the protective grounding
terminal.
• 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.
• An AC outlet (auxiliary for the DS400/DS600) should be used to supply
power to the DS400/DS600 using a power cable(DV400-051)
separately available. Do not use this AC outlet to supply power to the
other equipments nor use other cables for the power connection.
Otherwise, the current flowing through the AC outlet will exceed the
permissible current, thereby resulting in the fuse blowing, overheating
or burning may occur.
• Make sure to apply a power switch in the power supply cord with the
following characteristics:
• rated power current > 3 A
• rated rush current > 90 A
Connecting procedure (DR242)
1. Check that the power switch is turned off.
2. Remove the cover protecting the power terminals.
3. Connect the power supply wires and the protecting ground wire to the power terminals.
4. Replace the cover.
Connecting procedure (DS400/DS600)
1. Check that the power switch is turned off.
2. Remove the cover protecting the power terminals.
3. Connect the power supply wires and the protecting ground wire to the power terminals.
4. Replace the cover.
In order to cut down on unnecessary radio interference, attach a clamp filter (accessory) near
the power cord plug. Make a loop with the power cord and clamp it in the clamp filter.
Rated supply voltage : 100 to 240 V AC (free power supply),operating voltage: 90 to 250 V AC
Rated supply voltage frequency : 50/60 Hz
Power consumption :
DR242 ... About 130 VA max.
DS400 ... See previous page.
DS600 ... See previous page.
• DR242 • DS400/DS600
L
N
Protective ground wire
Power supply wires
Power terminals
L
N
Protective ground wire
Power supply wires
Power terminals
AC outlet(Auxiliary
for DS400/DS600)
3.9 Connecting the Power Cord and Turning the Power ON/OFF