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The methods of upgrading the "power apportion charging", "energy saving control" or "peak cut control"
function are explained in this section.
1. Preliminary precautions
The following preparations are required before the air conditioner system can be expanded. The preparations
differ according to the functions being used.
[Key] : Apply / –: Do not apply
Service function
Contents
Monitor/
operation
Power appor-
tion billing
General
equipment
monitor/operation
1
Information on the refrigerant system, group and operation
blocks of the air conditioner system to be expanded
2
Information on the billing block for the air conditioner system
to be expanded
– –
3
Information on the air conditioner corresponding to the watt
hour meter (meter) to be expanded
– –
4
Information on the charges for the watt hour meter (meter) to
be expanded.
– –
5 Information on watt hour meter used for peak cut control – –
6 Information on set energy saving and peak cut control, etc. –
7 Information on function upgrade license number
*1 : Version Ver. 1.01 or later is required for the electric amount count software.
2. Precautions for upgrading functions
Observe the following points when upgrading the air conditioner system's functions.
(1) The power rate, etc., cannot be counted while the power for the power rate count software PLC is OFF.
(It is the same with when the power to the PL controller is OFF.)
Either turn the power OFF for the count target while the PLC (*1) power is OFF, or notify the owner that
the power rate, etc., cannot be counted during the expansion work.
*1:It is the same with PI controller.
Never use the initial request button for an electric amount count software PLC that is running. If used,
the charge data, etc., will all be cleared.
(2) When using the power apportion billing, the settlement period should be calculated before starting the
upgrade. The results for the settled period should always be printed or output to a file. Normal charging
may not be possible while the functions are being upgraded, so the air conditioner breaker should be
turned OFF.
(3) Back up the TG-2000A database before and after the expansion work, and save each database. Refer
to Appendix 5.
3. Operation methods
Upgrade the air conditioner system's functions with the following procedures.
The procedures are divided for the "power apportion billing", "energy saving" and "peak cut" addition
functions, so carry out all steps corresponding to the function being used.
[Key] : Apply / –: Do not apply
Contents Addition functions
Step
Work on TG-2000A side
Work on AG-150A/G-50A,
PLC (or PI controller)
and watt hour meter, etc., side
Power
apportion
billing
*5
Energy
saving
Peak
cut
1
Stop all air conditioners.
(Air conditioner breaker should be
turned OFF.)
– –
2
Settle the air conditioning charges
for the term, and output the results.
– –
3
Check the meter current value on
the "System Equipment" screen,
and record the value.
Record the value indicated by the
meter
–
4
Turn the PLC (or PI controller)
power OFF, and upgrade the version
*2
–
Appendix 6: Upgrading the Functions