Hitachi SPX-WDC5 Installation & Operation Manual page 4

B-1. Operating Instruction for the DRY CONTACT
DIP SWITCH (SW501) setting which related to DRY CONTACT function.
ON
OFF
Table 1
Pin No. Function
1 AUTO RESTART Function
2 DRY CONTACT Function
3 DRY CONTACT Input Logic
Note :
1) AUTO RESTART function set to "Enable" is needed (set pin#1 on the DIP SWITCH SW501 above to OFF
position).
2) DRY CONTACT function is "Enable" by set pin#2 of the DIP SWITCH SW501 to ON position.
3) Select the proper setting for DRY CONTACT LOGIC INPUT pin#3 on SW501.
i) Set to OFF position (Hi Input) if the type of Dry Contact switch to be used (for the CARD KEY UNIT or
Window) is of contact type a (Normally Open Type) as shown in below diagram.
ii) Set to ON position (Lo Input) if the type of Dry contact switch to be used (for the CARD KEY UNIT or
Window) is of contact type b (Normally Close Type) as shown in below diagram.
i CHECK DRY CONTACT OF CARD KEY UNIT
AIR CONDITIONER
Standby
CARD
REMOVE
KEY
(DOOR
SWITCH)
contact
type
OPEN
a
contact
type
CLOSE
b
After all connection has been done as below diagram, turn ON the breaker and push ON button of wireless remote
controller or wired remote controller to operate the air conditioner unit.
When the CARD KEY is in insert condition, the air conditioner operation is allowable by remote controller.
When the dry contact switch on the Card Key Unit is open (refer to diagram below for contact type a), the unit stops to
operate (it takes 10 seconds to stop the unit operation after the dry contact switch on the card key turns off) and vice versa.
When the card key is removed from the Card Key Unit, the wireless remote controller can not be used.
When the card key is removed from the Card Key Unit, the wired remote controller LCD display is activated; however it has
no control over the unit.
The suitable accessory Card-key Connecting Cord (accessory code#: SPX-WDC3) need to be used to connect the Card
Key Unit's dry contact switch to the connector on the control board of the indoor unit. Please contact your Hitachi sales
representative to select suitable accessory code# for the concerning indoor model.
Switch Position / Setting
OFF Enable ON Disable
OFF Disable ON Enable
OFF Hi Input ON Lo Input
AIR CONDITIONER
Operating
INSERT
CLOSE
OPEN
– 4 –
iii SET SWITCH (SW501)
SW501 SET CONDITION
INITIAL CONDITION (CARD KEY NO USE)
ON
No.2 : OFF
No.3 : OFF
1 2 3 4 5 6
ON
No.2 : ON
1 2 3 4 5 6
No.3 : OFF
ON
No.2 : ON
No.3 : ON
1 2 3 4 5 6