6Installation Method
6-1. Parts to be Procured Locally
Prepare the following parts to install this device.
Required Part |
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Unit fixing screws | M4 screw × 4 |
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| Power source: 24 VDC 0.2 A (Minimum loading), SELV circuit, power line with grounding terminal | ||
| Ripple noise: Lower than 200 |
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Power supply for this | Compatible specification |
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Authorized or CE marked products |
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unit |
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Subject to regulations: - IEC60950 (or EN60950) |
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| - CISPR22/24 (or EN55022/24) |
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Power line | Use a sheathed vinyl cord or cable. |
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At least 0.75 mm² (AWG18) |
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| Type of the cable: Sheathed vinyl cords or cable which comply with the following specifications or equivalent. | ||
| • CPEV Φ1.2 mm to Φ1.6 mm • CVVS 1.25 mm² to 2 mm² (AWG16 to 14) | ||
* CPEV: PE insulated PVC jacketed shielded communication cable |
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line | * CVVS: PVC insulated PVC jacketed shielded control cable |
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PE: Polyethylene PVC: Polyvinyl choloride |
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| Power needs to be supplied to the | ||
| power supply unit for the transmission line. |
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| Shows the size of the electric wire (copper wire) that is adapted to the terminal block of this device. | ||
Signal lines | Electric wire size ········· (1) Solid wire: Φ0.65 mm (AWG21) - Φ1.2 mm (AWG16) | ||
| (2) Stranded wire: 0.75 mm² (AWG18) - 1.25 mm² (AWG16) | ||
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| Single strand: At least Φ0.18 mm | |
[Parts to be Purchased Separately] |
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Name | Model | Application | Remark |
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Power supply unit |
| Power supply to the | This is not required when power is to be |
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| supplied from an outdoor unit. |
[Recommended Pulse Specifications]
Prepare a measuring instrument that measures the type of pulse signals indicated in table below.
Type |
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Output pulse relay | Semiconductor relay method |
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method |
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| 100 ~ 300 ms (100 ms and above) | ON |
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| Choose an instrument that outputs |
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Output pulse width |
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point pulse per each pulse output. |
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| 100 ~ 300 ms | |||
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| Water meter: m3/pulse |
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Pulse unit | Gas meter: | m3/pulse |
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| Calorimeter: | MJ/pulse |
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* Except for the
4
