Mitsubishi G-50A Installation Manual download pdf (Page 61)

8.4.5 In the case of measuring instrument pulse counting (direct reading) method

The measuring instrument pulse counting (direct reading) method is explained here.

For this method, charging is practiced only by the measuring instrument value collected by PLC.

Therefore, a measuring instrument is required to install for each charge block (tenant).

It is required to prepare PLC, the pulse counting software and the license registration of all G-50As

G-50A

PC for centralized control

(Integrated software)

PLC (pulse counting

software installed)

Integration and storing by counting the pulse from

measuring instrument

Calculation based on the data collected from PLC.

Storing for the past 3 months

File output

Output of apportioned result

(1) Standard charge

The standard charge is calculated by referring the contract rate of electricity, gas and city water and set

to TG-2000A for each measuring instrument.

(2) Unit price

For the unit price, the electricity may be set in 2 types (Electricity 1 and Electricity 2), and gas, city water

and calorific amount be in 1 type.

However, the time frame is set to all measuring instruments collectively.

(3) Charge

In this method, the charge may be calculated by multiplying the values of the measuring instruments

provided by the unit price and further adding the standard charge.

In the case of the measuring instrument pulse counting method, the operation information of air conditioners is not required, but the license

registration to G-50A is essential.

Figure 8-12 Mechanism of electric power pulse counting (direct reading) method

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Mitsubishi G-50A Installation Manual Page 61