Hitachi CENTRIFUGAL VRF Serie Bedienungsanleitung Seite 28

ELECTRICaL WIRING
DSW5: Setting of end-terminal resistance
It is not necessary to set when the number of RASC units in the
same H-LINK line is one. In case of more than one RASC unit in
the same H-LINK line, set as follows:
• First RASC unit: keep DSW5-1 in "ON".
• Rest of RASC units: set DSW5-1 to "OFF".
Setting before shipment
Cancellation
(Setting of end terminal resistance)
Turn OFF DSW5 number 1 pin for cancel of end terminal
resistance setting
RASC unit
RASC unit
DSW5 DSW5
1 2 1 2
Control wiring Control wiring
(H-LINK) (H-LINK)
Indoor unit Indoor unit
DSW6: Setting of indoor unit control operation
Individual control operation
(Setting before shipment)
Simultaneous control operation
The function selection using the jumper lead setting is shown in the tables below:
Setting Function
JP1 Not used
JP2 Not used
JP3 400V power source voltage
JP4 Fixing for Cooling Only
JP5 Self diagnosis
JP6 Phase detection release
10.3.4 LED's indication
LED1 Red This LED indicates the transmission status between the indoor unit and the RCS
LED2 Yellow This LED indicates the transmission status between the indoor unit and the RASC unit
LED3 Green Power source for the PCB
18 PMML0399B rev.1 - 07/2016
RASC unit
RASC unit
DSW5 DSW5
1 2 1 2
DSW6
ON
Control wiring
(H-LINK)
1 2
Indoor
unit
Indoor unit
-
-
When JP3 is set to "open", current protection parameters are set for a 400 V power source voltage.
When JP4 is set to "open", operation mode is fixed for cooling. Thermo-ON is available only by "COOL" or
"DRY" mode at indoor unit.
For function test of the RASC unit control PCB.
Factory default setting is open. When power ON in short condition it enters self diagnosis.
Phase detection abnormality not detected. When short, doesn't affect phase detection.
LED Indication
• Individual control:
Operating line
Remote control line
Individual control
Running ON/OFF individually
Thermo-ON/OFF individually
DSW6
DSW6
ON
ON
1 2
1 2
• Simultaneous control:
Operating line
Remote control line
Simultaneous control
Running ON/OFF simultaneously
Thermo-ON/OFF simultaneously
DSW6
ON
1 2
10.3.3 Jumper lead setting (JP1~6)
Setting before shipment:
System JP1
Three-phase (3N~) 1
?
N O T E
0: Open
1: Short circuit
Details
Operating line
Remote control line
Individual control
Running ON/OFF simultaneously
Thermo-ON/OFF individually
DSW6
DSW6
ON
ON
1 2
1 2
DSW6
ON
1 2
JP2 JP3 JP4 JP5
1 0 1 0
JP6
0