Fujitsu Airstage J-II Series Design & Technical Manual page 818

(2) When electricity meter used is specified by pulse constant
The connection configuration is shown below.
Electricity meter
pulse
transmission
Pulse constant line
reference point
measurement
VT
line
(PT)
3ø
CT
1ø
VT
measurement
(PT)
line
Pulse constant
reference point
Electricity meter
For the electricity meter specified by pulse constant, the Input Power indicated by output pulse
must be corrected by VT/CT ratio. In this case, the settings are as follows:
Set point Set item
Electricity Set in
meter accordance
with the product
manual.
Outdoor unit Meter No.
setting
Electricity meter
pulse setting
System Electricity meter
Controller or system setting
ECA Tool
Pulse setting
*1: Input up to 6 decimal digits
[Setting example]
Equipment conditions: VT ratio=1 (not used), CT ratio=500(2500/5A), electricity meter=3200 pulse/kWh
Set value: Electricity meter pulse setting=6 (3200/ (1x500)),
Pulse setting=0.9375 (6x (1x500)/3200) ---Refer to the calculating formula of the table above.
NOTE: Be sure to select an electricity meter that sends more pulses per 1kWh than VT ratio x CT ratio. Other-
wise, the measurement error of the power will be larger than 1kWh, thus affecting the accuracy of ECA.
to CN135
Outdoor unit
Power cable
Indoor unit
RB unit
Transmission line (VRF Network)
pulse transmission line
Set value Description
- When there is a product unique setting,
setting is performed in accordance with
the product manual. (Pulse constant
value, output coefficient, etc.)
Arbitrary Set an unique electricity meter No. for
electricity meter identification.
The pulse constant Set the approximate number of power
value / (VT ratio x meter pulses that are equivalent to
CT ratio). However, 1kWh.
truncated after the
decimal point
from the electricity meter, the outdoor
unit communicates "1" to the System
Controller or ECA Tool.
Unit to be measured by Sets the outdoor unit and indoor unit,
electricity meter measured by the electricity meter of
the meter No. set at the outdoor unit.
(Electricity meter pulse Set the standard number of kWh for the
setting value) x (VT value communicated from the outdoor
ratio x CT ratio)/pulse unit.
constant
Set the number of kWh that
Values after the corresponds to the "1" communicated
decimal point must be from the outdoor unit.
also input. *1
- (07 - 171) -
System Controller
to CN135
Touch panel
controller
When set number of pulses come
Remarks
The information
will become
necessary when
setting System
Controller or
ECA Tool later.
Refer also to
2-1.OUTDOOR
UNIT
The value set
by each outdoor
unit is used.
Refer to the
value set by
each outdoor
unit.