Yokogawa YVP110 - Manual (Page 31)

<4. Wiring and Piping>
4-2
IM 21B04C01-01E
F0401.ai
Air supply port (SUP)
Output pressure port
(OUT1)
Output pressure port (OUT2)*
*Applicable only for Double
Acting Type
OUT2
Figure 4.1 Pneumatic Piping Ports
CAUTION
• To obtain the maximum air processing flow
rate of the YVP110, the inner diameter of
the piping tube needs to be at least 6 mm.
When the YVP110 is combined with a high-
capacity actuator and a minimum response
speed is required, use a tube whose inner
diameter is 6 mm or larger.
• Do not use an unnecessarily long tube or
piping as it will decrease the air flow rate,
thus leading to a decrease in response
speed.
• Perform sufficient flushing of the piping
tubes and fittings before use to ensure that
no foreign matter such as metal refuse may
enter the piping.
• When performing the piping connection, be
sufficiently careful that a piece of sealing
tape or other solid or fluid sealing material
does not enter the piping.
• When using the Double Acting Type and
piping to the OUT2 port, ensure that the plug
for the OUT2 Pressure Gauge does not get
turned around.
• When using the Double Acting Type, adjust
the pressure balance of the control relay as
required (in reference to Section 6.3.4).
4.3 Wiring
CAUTION
For flameproof equipment, wiring materials
and wiring work for these equipment including
peripherals are strictly restricted. Users
absolutely must read “Installation and Operating
Precautions for JIS Flameproof Equipment” at
the end of this manual prior to the work.
4.3.1 Recommended Cables
For wiring for a YVP110, use a cable for H1 fieldbus
segments specified by the Fieldbus F
OUNDATION TM .
A shielded cable is recommended. For the details
of cables required for H1 fieldbus segments, see
"Fieldbus Technical Information"(TI 38K3A01-01).
Choose cables suitable for the respective ambient
temperature ranges, especially when they are to be
laid in a hot or cold place.
When laying cables in or through a place where
the atmosphere may include a toxic gas or liquid,
or oil or solvent, choose wires and cables made of
materials that have sufficient durability.
4.3.2 Precautions on Wiring
IMPORTANT
• Prevent the cables from being affected
by noise induced from a high-capacity
transformer or power supply to a motor.
• As shown in Figure 4.2, remove the terminal
box cover and dust proofing plug when
performing a wiring connection. Be sure to
securely seal the unused wiring port with a
blind plug.
• To make the cables watertight and to
prevent them from being damaged, it is
recommended to use a cable conduit and
duct. Also for the same reasons, be sure to
use a watertight adapter for the connection
of the conduit to the port.