Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 64)

IM 11M12A01-05E 5-1
5. Wiring
5. Wiring
In this Chapter, the wiring necessary for connection to the EXAxtZR Integrated type
Zirconia High-temperature Humidity Analyzer is described.
5.1 General
CAUTION
• Never supply current to the equipment or any other device constituting a power circuit
in combination with the equipment, until all wiring is completed.
• This product complies with CE marking.
Where compliance with CE marking is necessary, the following wiring procedure is
necessary.
1. Install an external switch or circuit breaker to the power supply of the equipment.
2. Use an external switch or circuit breaker rated 5A and conforming with IEC 947-1 or
IEC 947-3.
3. It is recommended that the external switch or circuit breaker be mounted in the same
room as the equipment.
4. The external switch or circuit breaker should be installed within the reach of the
operator, and marked as the power supply switch of this equipment.
Wiring procedure
Wiring should be made according to the following procedure:
1. Be sure to connect the shield of the shielded line to FG terminal of the analyzer.
2. The most outer sheath of the signal line and the power cable should be stripped off
to the minimum necessary length.
3. Signal may be affected by noise emission when the signal lines, power cable and
heater cable are located in the same conduit. When using a conduit, signal lines
should be installed in a separate conduit from power and heater cables. Be sure to
ground the metal conduit.
4. Install the attached two blind plugs to unused cable connection gland(s) of the
equipment.
5. The cables indicated in Table 5.1 are used for wiring.
6. After completing the wiring, screw the cover in the terminal box body and secure it
with a lock screw.
Table 5.1 Cable Specifications
Terminal name of equipment Name Need for shields Cable type Number of wires
L, N, Power supply CVV 2 or 3 *
AO+, AO- Analog output s CVVS 2
DO-1, DO-2 Contact output CVV 2 to 8
DI-1, DI-2, DI-C Contact input CVV 3
Note *: When the case is used for protective grounding, use a 2-wire cable.
T5.1E.EPS
Note
• Select an appropriate cable O.D. to match the cable gland size.
• Protective grounding should have the grounding resistance of 100V or less (JIS Class
3 ground).
• Special cable length is required for HART communication For detail of the HART
communication refer to IM11M12A01-51E HART Protocol Section 1.1.2 Communi-
cation line Requirement.