Fujitsu AIRSTAGE J-II Design & Technical Manual page 693

SETTING OF OUTDOOR UNIT AND SYSTEM CONTROLLER
„ „
To obtain the appropriate power consumption by System Controller, the power value measured
by an electricity meter must be properly conveyed. To do this, appropriate setting at the
electricity meter, outdoor unit, and System Controller is necessary. The method of setting the
pulse from the electricity meter received by an outdoor unit and the method of setting the pulse
value set by system controller are described here. When electricity meter setting is necessary,
perform it in accordance with the instruction manual supplied with the electricity meter.
Below, the setting method of electricity meters specified in pulse units and that specified in
pulse constant are described.
(1) When electricity meter used is specified in pulse units
The connection configuration is shown below.
Electricity meter
VT
(PT)
3ø
1ø
Pulse unit
VT
reference
(PT)
point
Electricity meter
For the electricity meter specified in pulse units, the output pulses are normalized in advance
(normally 1kWh/pulse) and is output. 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 system setting
Pulse setting
[Setting example]
Equipment conditions: VT ratio=1 (not used), CT ratio=50(250/5A), electricity meter=1kWh/pulse
Set value: Electricity meter pulse setting=1(fixed), pulse setting=1(corresponds to electricity meter used)
pulse
transmission
line
to CN135
measurement
ine
Outdoor unit
CT
Power cable
Indoor unit
measurement
line
RB unit
pulse transmission line
Set value Description
- When there is a product unique setting,
setting is performed in accordance with
the product manual. (Pulse units value,
VT/CT ratio, output coefficient, etc.)
Arbitrary Set an unique electricity meter No. for
electricity meter identification.
1 Fixed to "1".
When 1 pulse comes from the
electricity meter, the outdoor unit
communicates "1" to the System
Controller.
Units measured by Set 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 pulse units specified by the
units value (Usually electricity meter as they are.
either of 1, 10, or 100
Set the number of kWh that
[kWh/ pulse])
corresponds to the "1" communicated
from the outdoor unit.
- (07-167) -
System Controller
to CN135
Transmission line (VRF Network)
Remarks
The information
will become
necessary when
setting System
Controller later.
Refer also to 6-6-
1 OUTDOOR
UNIT.
The value set by
each outdoor unit
is used.
Refer to the
value set by each
outdoor unit.