YOKOGAWA ZO21DW, User Manual, Page: 20 / 39

<4. WIRING>
4-1
IM 11M03A02-00E
4. WIRING
In this Chapter, the wiring necessary for connection to the Model ZO21DW detector is described.
4.1 General
CAUTION
NEVER supply current to the converter or any other device constituting a power circuit in
combination with the converter, until all wiring is completed.
4.1.1 Cable Specification
Cable specifications are shown in Table 4.1.
Table 4.1 Cable specifications
Terminal name of converter Name Need for shields Cable type Number of wires
CELL+, CELL-
HTR TC+, HTR TC-
CJ+, CJ-
Converter signal ○ CVVS 6
HEATER Converter heater CVV 2
L, N, Power supply CVV 2 or 3 *
AO-1+, AO-1-, AO-2+, AO-2- Analog output ○ CVVS 2 or 4
DO-1, DO-2, DO-3, DO-4 Contact output CVV 2 to 8
AC-Z, AC-S, AC-C Automatic Calibration unit CVV 3
DI-1, DI-2, DI-C Contact input CVV 3
Note *: When the case is used for protective grounding, use a 2 cores cable.
CAUTION
• Select suitable cable O.D. to match the cable gland size.
• Protective grounding should be connected in ways equivalent to JIS D type (Class 3
grounding ), (the grounding resistance is 100 Ω or less).