Tokyo Keiki UFL-30, Installation & Operation Manual

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I-12
I-2-3 Placement of the main unit
WARNING
Do not install the main unit in a atmosphere where any flammable or explosive gas is present.
NOTE
Do not install the main unit higher than altitude 3000m to comply with EC directive.
(1) Setup location
Consider the following conditions when selecting a setup location for the main unit.
a. Place the main unit in a location with an ambient temperature range of -10 to +60°C. Do not place
the unit near a heating element and avoid exposure to direct sunlight.
b. Do not place the unit in an area with excessive dust and/or a corrosive atmosphere.
c. Place the unit in a location where inspections and maintenance duties can easily be performed.
d. Ensure that the length of the cable connecting the main unit with the transducers does not exceed
300m.
e. Do not place the unit in a location where interference through electrical devices and power lines
could occur.
(2) Main unit positioning
a. Use 4 bolts (M10 etc.) or similar fixtures to secure the main unit in a vertical position to a wall.
b. Secure the area around the unit to facilitate maintenance inspections.
(3) Replace blind plug to cable gland
Place wiring q'ty of cable gland instead of attached blind plug.
I-2-4 Wiring
DANGER
Be sure to stop power supply to the main unit while wiring work to prevent electrical shock .
WARNING
Make sure that wiring are made correctly as incorrect wiring may result in damage to the main unit and
connected accessories. Refer specifications for each Input/Output in clause
III-
2-2.
(1) Ensure that main power is turned off.
(2) Make sure that the coaxial cables connecting the transducers to the main unit are kept apart from
power lines and position the cables to avoid proximity to electrical appliances.
(3) Refer to Fig. 1-2-4-1 to Fig. 1-2-4-3 and Table 2-1 for cable connections on the main unit and
accessories.
Fig.1-2-4-1. Connection to Main Unit
Power Supply Cable
(Live-Line)
+ line at DC Power Supply
）
Power Supply Cable
(Neutral-Line)
(- line at DC power Supply
）
Complex Cable for
Analog Output : CH2
Complex Cable for
Analog Output : CH1
Terminal for
Transducer cables
Path 1 and Path 2
Clamp for cable shield
of transducer & GND
Ports for Relay Output
CH1-4
Protective Earth Terminal
for power supply cable