Hitachi PSC-A1T - General Data

7.1.2.4 General data

Hardware Specications
Item Specications
Power supply 1~ 230 V ±10% 50 Hz
Consumption 4.5W (maximum)
Outer dimensions Width: 106 mm, Depth: 90 mm, Height: 58 mm
Weight 165 g
Assembling conditions Indoors (installation inside an enclosure with restricted access by a tool)
Ambient temperature 0~60 ºC
Humidity 20~85% (Without condensation)

Communication
RS485
Item Specications
Type Modbus RTU
Connector Serial Port RS485 (3 screw terminals)
Communication line Shielded twisted pair cable, with third wire (for the common), with polarity.
Communication system Half-duplex, multipoint serial connection
Communication method Non parity or odd/even parity selection. Data length: 8 bits – 1 stop bit
Baud rate transmission 19200/9600 Baud
Length Max. 1200 m according EIA-485
Ethernet
Item Specications
Type Modbus TCP
Connector Ethernet (RJ45)
Communication line Two twisted pair cable CAT5 or better (T-568A/T-568B)
Communication system Full-duplex
Length Max. 100 m according IEEE 802.3
H-LINK
Item Specications
Communication with Hitachi Air Conditioning series: SET-FREE, UTOPIA and CENTRIFUGAL systems
Communication line Twisted pair shielded cable, non-polarity
Communication system Half-duplex
Communication method Asynchronous
Speed of transmission 9600 Bauds
Length of wiring 1000 m maximum (total length of H-LINK I/O bus)
Maximum number of gateways 1 Gateway (HC-A8MB,HC-A64MB)/H-LINK SYSTEM
Maximum number of indoor units
HC-A64MB → up to 64 indoor units
HC-A8MB → up to 8 indoor units
7 Gateways for building management systems
HC-A(8/64)MB
TCGB0106 rev.0 - 12/2014
627627
7