Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 74)

IM 11M12A01-03E 5-2
Wiring procedure
Wiring should be preformed according to the following procedure:
1. Be sure to connect the shield line to FG terminal of the converter.
2. The outer sheath of the signal line should be stripped to a length of 50 mm or less.
The outer sheath of the power cable should be stripped to a length of 20 mm or less.
3. Signals may be affected by noise emission when the signal lines, power cable and
heater cable are located in the same conduit. When using conduit, signal lines should
be installed in a separate conduit from power and heater cables.
4. Install metal blind plug(s) in unused cable connection gland(s) of the converter.
5. Metal conduit should be grounded.
6. The following cables are used for wiring:
Table 5.1 Cable specifications
T5.1E.EPS
Terminal name of converter Name Need for shields Cable type Number of wires
CELL+, CELL-
HTR TC+, HTR TC-
CJ+, CJ-
HEATER
L, N,
AO-1+, AO-1-, AO-2+, AO-2-
DO-1, DO-2, DO-3, DO-4
AC-Z, AC-S, AC-C
DI-1, DI-2, DI-C
Converter signal
Converter heater
Power supply
Analog output
Contact output
Automatic
Calibration unit
Contact input
᭺
᭺
CVVS
CVV
CVV
CVVS
CVV
CVV
CVV
6
2
2 or 3 *
2 or 4
2 to 8
3
3
Note *: When the case is used for protective grounding, use a 2-wire cable.
CAUTION
• Select suitable cable O.D. to match the cable gland size.
• Protective grounding should be connected (Class 3) grounding (the grounding
resistance is 100
⍀ or less).
• Special cable length should be taken consideration.
For detail of the HART communication, refer to IM11M12A01-51E HART Protocol
Section 1.1.2 Communication Line Requirement..