Electrical Wiring; Electrical Connection Of Psc-A1T Timer Combined With Individual Or Central Controllers - Hitachi PC-ARF Technical Catalogue

8 Control support devices
PSC-A1T

8.1.3 Electrical wiring

8.1.3.1 Electrical connection of PSC-A1T timer combined with individual or central controllers

This section explains how to electrically connect the timer to another remote controls or central stations.
C A U T I O N
Use a twisted pair cable (1P - 0.75 mm
length, use:
• Shielded pair cable (connected to earth protection on one side).
• Normal pair cable.
The transmission cable and the remote control cable must be kept at least 30 cm apart.
When installing the timer on an RPK unit, first disable the wireless remote control and then connect a different remote control. The timer
can then be connected to the other remote.

PSC-A1T timer combined with PC-ARH or wireless remote control receivers
Set DSW1-4 pin and DSW2-2 pin to ON position on the PSC-A1T.

PSC-A1T timer combined with PSC-A64S central control
Set DSW1-4 and DSW2-2 pins to OFF position on the PSC-A1T.
N O T E
Up to 8 PSC-A64S central control units and one PSC-A1T timer can be connected to one H-Link.
Connector
Accessory cable (1 m)
To TB2 of other cen-
tral stations
700
TCGB0106 rev.0 - 12/2014
2 ) as a transmission cable to avoid possible communication errors. If the cable exceeds 30 m in
Transmission cable be-
tween the indoor and
outdoor units (H-LINK)
Indoor unit
Twisted pair cable 1P - 0.75 mm²
(max. 100 m) field supplied
220 VAC or 240 V
power supply
Available for H-Link connec-
tion (to connect to the indoor
or to the outdoor unit termi-
Twisted pair cable
nal boards 1 and 2)
1P - 0.75 mm²
(max. 1000 m)
Outdoor unit
Indoor units
Remote control
switch