Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 58)

<5. Wiring>
5-1
IM 11M12A01-04E
5. Wiring
This chapter describes wiring procedures necessary for the EXAxt ZR Integrated type Zirconia
Oxygen Analyzer.
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 a performance suit for 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 conforms to 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 will 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 the
separate conduit from power and heater cables. Be sure to ground the metal conduit.
4. Mount 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 converter Name Need for shields Cable type Number of wires
L, N, Power supply CVV 2 or 3 *
AO+, AO- Analog output Ο CVVS 2
DO-1, DO-2 Contact output CVV 2 to 4
DI-1, DI-2, DI-C Contact input CVV 3
Note *: When the case is used for protective grounding, use a 2-wire cable.
NOTE
• Select an appropriate cable O.D. for the cable gland size.
• Protective grounding should have the grounding resistance of 100Ω or less.