Hitachi RPI-0.8FSG1 Service Manual page 308

OPTIONAL FUNCTION
(4.1 Indoor Unit)
(4) Cancellation of Commands from Remote Control Switch after Forced Stoppage (Level Signal Input)
By using the signal from a building management system, the air conditioners can be stopped and the
individual commands from the remote control switch are canceled.
The basic wiring and time chart are shown below. The required parts are shown in Table 4.1.
Cut JP5 of indoor PCB.
JP1 JP2 JP3 JP4 JP5 JP6
< RPK >
JP1 JP2
NOTES:
1. Picking up signal within 10 seconds after power supply is turned ON is not available due to initializing of
components.
Do not change the signal (RUN/STOP) in this period.
2. Remote Control Switch is required for this function.
Component
Auxiliary Relay (X1, X2)
Changeover Switch (SS2, SS3)
3P Connector Cord
Low Voltage
Cord
(Indoor)
220V/240V Class
Low Voltage
Cord
(Outdoor)
220V/240V Class
(*) Only for RPK (After Alteration): PCC-1A (Connector XARP-3), 12V
NOTE:
Make the wires CN4 as short as possible. Do not install the wires along the 200-400V power line.
Separately install them at a distance of more than 30cm. (Intersecting as applicable.)
If the wires are installed along the power line, put the wires in a metal tube and connect a wire to an end for
grounding. The maximum wiring length is 70m.
In the case that this function is used, it is recommended that safety devices such as electric leakage
breaker or smoke detector, etc. be used.
4-4
Indoor Unit PCB
3
2
Cut JP2 of
indoor PCB.
3P Connector
CN4
Table 4.1 Specifications on Required Components for (1) to (4) Functions
OMRON Mini Power Relay
Model: MY1F or Equivalent
Manual Type
Optional Part PCC-1 (*)
(Able to Connect JST Connector XHP-3 (*))
2
0.3mm
0.5 to 0.75mm
0.5 to 0.75mm
2
2mm
CN4
X1
3
2
Wiring Diagram Example
Manufacturer or Specifications
2
2
SS3: Forced Stoppage Sw.
SS3
Power
Source
X1
Control Circuit
Remarks
Voltage
220V or 240V
Five Cords with
Connectors as One Set
less than 24V (*)
less than 24V (*)