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6
Installation Method
6-1. Parts to be Procured Locally
Prepare the following parts to install this device.
Required Part
Unit fixing screws
M4 screw × 4
Power source: 24 VDC 0.2 A (Minimum loading), SELV circuit, power line with grounding terminal
Power supply for this
unit
Use a sheathed vinyl cord or cable.
Power line
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)
M-NET transmission
line
Power needs to be supplied to the M-NET circuitry of this device. Use an outdoor unit or a separately purchased
power supply unit for the transmission line.
Shows the size of the electric wire (copper wire) that is adapted to the terminal block of this device.
Electric wire size ········· (1) Solid wire: Φ0.65 mm (AWG21) - Φ1.2 mm (AWG16)
Signal lines
[Parts to be Purchased Separately]
Name
Power supply unit
PAC-SC50KUA
[Recommended Pulse Specifications]
Prepare a measuring instrument that measures the type of pulse signals indicated in table below.
Type
Output pulse relay
Semiconductor relay method
method
100 ~ 300 ms (100 ms and above)
Choose an instrument that outputs non-voltage a-contact
Output pulse width
point pulse per each pulse output.
Watt-hour meter: 0.1 kWh/pulse, 1 kWh/pulse recommended
Water meter: m
Pulse unit
Gas meter:
Calorimeter: MJ/pulse
* Except for the watt-hour meter, select instruments that take measurements in the appropriate pulse unit.
Ripple noise: Lower than 200 mVp-p
Compatible specification
Authorized or CE marked products
Subject to regulations:
- IEC60950 (or EN60950)
- CISPR22/24 (or EN55022/24)
- IEC61000-3-2/3-3 (or EN61000-3-2/3-3)
At least 0.75 mm² (AWG18)
* CPEV: PE insulated PVC jacketed shielded communication cable
* CVVS: PVC insulated PVC jacketed shielded control cable
PE: Polyethylene
PVC: Polyvinyl choloride
(2) Stranded wire: 0.75 mm² (AWG18) - 1.25 mm² (AWG16)
Model
Power supply to the M-NET transmission line This is not required when power is to be
3
/pulse
3
m
/pulse
Specification
Single strand: At least Φ0.18 mm
Application
Specifications
4
Remark
supplied from an outdoor unit.
ON
100 ~ 300 ms
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