Dx-Interface - Hitachi RCI-1.0FSN3 Service Manual

6 Optional functions
Where Code Function
i1 CN3 1#-2# input
PCB1
& RCS i2 CN3 2#-3# input
o1 CN7 1#-2# output
o2 CN7 1#-3# output
o3 CN8 1#-2# output
CO2 sensor type
Ct
S1: Set minimum
PCB1
(PSW)
S2: Set maximum
dF Defrost Fan
N O T E
* CO sensor signal must be an ON/OFF signal.
2
CO sensor must be connected to CN3, pins 1-2, for I1 input signal (refer to outdoor unit technical catalogue for
2
further information about the connection specs).
When using this option. I1 std. functions become deactivated. I2 input signal is not affected.

6.2.2 DX-Interface

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Main optional functions on DX-Interface series 1
Optional function
EC Fan or Tap Fan
Defrost signal
Fan operation during defrost
Thermo-on / thermo-off by an external input
Operation delay
Thermistor selection
Fan Stoppage delay
CO2 sensor
220
SMGB0077 rev.0 - 01/2013
KPI-(E/H)3E KPI-X3E
03:Remote ON/OFF 1 (Contact)
O O
04: Remote ON/OFF 2 (Pulse)
O O
O O
O O
O O
O O
O O
O O
Range (00: S1~20 / 01: S1~10)
00: Fan Low operation (Default)
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O
The control of tap fans and EC fans is possible from the DX-Interface series 1.
Output signal get from the DX-Kit when the system is in defrost mode.
During defrost operation three different fan speed settings are possible: fan speed
kept as set, fan speed reduced to low speed and fan stoppage.
Once the system is turned on, the unit is kept in off during an specific time. Useful
for applications where the DX-Kit is focused in comfort and not room conditioning
Option to select between inlet thermistor, external thermistor or remote controller
thermistor to perform the cycle control (as inlet temperature) (Only if demand control
Once the system is switched off, the unit keeps running for a suitable period of time,
to for example, perform the air renovation once the activity is conclude.
By the action of an ON/OFF CO2 sensor, the DX-Kit switches the fan speed to high
while the CO2 concentration exceeds the sensor detection threshold.
Setting Status
00:No setting
01:Room Thermo (Cooling)
02:Room Thermo (Heat)
05:Remote ON/
OFF2(Stoppage/Pulse)
06:Forced Stop
07:Remote H/C changeover
00:No setting
01:Run
02:Alarm
03:Cooling
04:Thermo ON
05:Heating
06:Defrost
00: ON/OFF CO2 signal
01: Activated 4-20mA signal
02: Activated 0-10V signal
Default (00: 4 / 01: 0)
Range (00:4~S2 / 01: 0~S2)
Default (00: 20 / 01: 10)
01: Fan kept operation
02: Fan stopped operation
Explanation
Instead of typical control logic.
is based on inlet temperature).
Remarks
When Thermo ON/OFF input
enabled (PCB2-DSW16=ON),
i1 optional signal is not
available
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