Hitachi PSC-A1T Technical Catalogue

6 Building air conditioning controls
HC-A64NET
TCGB0106 rev.0 - 12/2014
621621
6
6.3.3 Electrical wiring
Name Connection Cable specication
X1 Power supply (1)
Use 0.75 mm
2
wires which are not lighter than the polychloroprene sheathed exible cord (code
designation 60245 IEC 57)
X3 Ethernet (1)
Category 5 or higher LAN cables
PC connection: Use a crossed cable (1 cable set available in Net conguration Kit, model code
7E513206) for direct connection.
LAN connection: Use a direct cable (eld-supplied) for connection to a commercial distributor (Hub).
X4 H-LINK (1)
Twisted pair shielded cable 0.75 mm².
Shield must be grounded in one side only.
X5 RS485 (1) 3 cores cable harness 0.75 mm² grounded in one side only. Use different colour for each cable.
X6 USB (1) USB Mini-B plug cable (1 cable set available in Net conguration Kit, model code 7E513206)
NOTE
(1): These cables must be eld supplied.

DIP switch setting
Name Function
Factory
setting
Description
SW1 Conguration
SW1-1: Not used.
SW1-2: Not used (keep always “ON”)
6.3.4 Compatibility
The new HC-A64NET is compatible with all SET-FREE, UTOPIA and CENTRIFUGAL units using H-LINK communication
protocol.
This device is not compatible with any of the following HITACHI controllers:
• Centralised remote controls
• Building air conditioning controls
• Other HITACHI BMS gateways (LONWORKS, BACNET, KNX, FIDELIO)
• Other units of the same model
NOTE
(*): HC-A64NET is compatible with CSNET Manager LT & XT.
6.3.5 Alarm code
Address 19 indicates alarm code as shown in indoor unit. Refer to Service Manual for the alarm explanation and repair
procedure in case of Indoor Unit or Outdoor Unit alarm.
6.3.6 Troubleshooting
ALARM CODE DESCRIPTION COUNTERMEASURE
LED2 is ickering Abnormal operation
Shut down the device power supply and restore it after 5 s. If LED2 is still icker-
ing contact to the Hitachi customer service

Hitachi PSC-A1T Specifications

General

Brand	Hitachi
Model	PSC-A1T
Category	Controller
Language	English