Hitachi PSC-A1T Technical Catalogue

7 Gateways for building management systems
KNX001
TCGB0106 rev.0 - 12/2014
652652
7.3.4 Operation
7.3.4.1 Introduction
A Hitachi Air-Conditioning system is integrated with a KNX system using CSNET WEB and the KNX001 device. The types
of machines to connect are Packaged, and up to 128 units are supported. This interface has different signals. The signals
available fare presented below:
Name Description/State
OnOff
On/Off setting order
Read/Write: ON,OFF
Mode
Mode Setting order
Read/Write: COOL, DRY, FAN, HEAT, AUTO
Fan
Fan Setting order
Read/Write: LOW, MED, HIGH
TempSet
Setting Temperature
Read/Write: 17ºC ~ 30ºC
Louver
Louver Setting
Read/Write: 8 positions: 0 ~ 7 and AUTO
Central
Central Setting
Read/Write: OnOff, Mode, TempSet, Fan
TIn
Inlet Temperature
Read: ºC
TOut
Outlet Temperature
Read: ºC
TGas
Gas Pipe Temperature
Read: ºC
TLiquid
Liquid Pipe Temperature
Read: ºC
ErrorCode
Alarm Code
Read: 0 ~ 100
StopCause
Compressor Stop Cause
Read: 0 ~ 200
ValveOpen
Indoor Unit Expansion Valve Opening
Read: 0 ~ 100
OperCondition
Unit Operation Condition
Read: OFF, THERMO-ON, THERMO-OFF, ALARM
Defrost
Defrost
Read: On, Off
ExtAmbTemp
Ambient Temperature
Read: ºC
Timer
Timer disabled
Read/Write: Enabled/Disabled
Error Comunicación
Error Comunication Unit
It’s a signal generated to indicate that the machine is not set into CSNET WEB.
CSNET WEB is a device that acts as an interface or gateway between the H-Link bus and an Ethernet connection.
The H-Link bus interconnects Packaged units with CSNET WEB. The Ethernet connection is used by the KNX001 gateway
to access the machines. As a previous step to the conguration of KNX001, CSNET WEB must be congured, along with
the machines or A/C units themselves.
For more information refer to the CSNET WEB documentation.

Hitachi PSC-A1T Specifications

General

Brand	Hitachi
Model	PSC-A1T
Category	Controller
Language	English