YOKOGAWA UT150, Руководство пользователя

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IM 05C01E12-41E 6
5. WIRING
CAUTION
1) Before you start wiring, turn off the power source and use a tester to check that the controller and cables
are not receiving any power in order to prevent electric shock.
2) For safety, be sure to install a circuit breaker switch (of 5A and 100V AC or 220V AC, and that
conforms to IEC60947) near the instrument so as to be operated easily, and clearly indicate that the
device is used to de-energize the instrument.
3) Wiring should be carried out by personnel with appropriate electrical knowledge and experience.
IMPORTANT
1) Use a single-phase power source. If the source has a lot of noise, use an isolation transformer for the
primary side and a line filter (we recommend TDK’s ZAC2205-00U product) for the secondary side.
When this noise-prevention measure is taken, keep the primary and secondary power cables well apart.
Since the controller has no fuse, be sure to install a circuit breaker switch (of 5A and 100V AC or 220V
AC, and that conforms to IEC standards) and clearly indicate that the device is used to de-energize the
controller.
2) For thermocouple input, use shielded compensating lead wires. For RTD input, use shielded wires which
have low resistance and no resistance difference between the 3 wires. See the table given later for the
specifications of the cables and terminals and the recommended products.
3) The control output relay cannot be replaced even though it has a limited service life (100,000 relay
contacts for the resistance load). Thus, an auxiliary relay should be used so that the load can be turned
on and off.
4) When using an inductive load (L) such as an auxiliary relay and solenoid valve, be sure to insert a CR
filter (for AC) or diode (for DC) in parallel as a spark-rejecting surge suppressor to prevent malfunctions
or damage to the relay.
5) When there is the possibility of being struck by external lightening surge, use the arrester to protect the
instrument.
NOTE
• Always fix a terminal cover bracket to the UT150 controller before wiring if an optional anti-electric-
shock terminal cover (part number: L4000FB) is used.
• Two types of optional anti-electric-shock terminal covers (part numbers T9115YE and T9115YD) are
available for the UT152 and UT155 controllers, respectively.
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Cable Specifications and Recommended Products
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Recommended Terminals
Use M3.5 screw-compatible crimp-on terminals with an insulating sleeve, as shown below.
Power supply and relay contact output 600V vinyl insulated wire/cable, JIS C3307, 0.9 to 2.0mm
2
Shielded wire (3-wire), UL2482 (Hitachi cable)
Thermocouple input
Shielded compensating lead wire, JIS C1610
RTD input
Other signals Shielded wire
7mm or less 7mm or less
ø 3.7mm ø 3.7mm