Hitachi PSC-A1T Technical Catalogue

7 Gateways for building management systems
HARC-BX E
TCGB0106 rev.0 - 12/2014
682682
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HARC-BX(B)
The HARC-BX(B) is a LonWorks interface designed for cases that require a more detailed control of the units, in addition
to complete unit operation monitoring functions.
This interface allows us to:
• Control up to 32 indoor units and 8 outdoor units
• Connect up to 8 interfaces per H-Link
a. HARC-BX(B) communication mode:
The following variables can be controlled and monitored in each of the interface’s 8 PCBs:
nviOnOff_n
nviMode_n
nviSetPoint_n
nviFanSpeed_n
nviProhibit_n
nvoOnOff_n
nvoInletTemp_n
nciMaxSendTime
nciMinSendTime
nviAllOnOff
nviLouvre_n
nvoMode_n
nvoSetPoint_n
nvoFanSpeed_n
nvoLouvre_n
nvoAlarm_n
nvoOutletTemp_n
nvoAmbientTemp
Conguration properties
x4 (each PCB)
14 Points/Unit
Network variables Version 1.0A
Remote
Control
2 Common points
Monitor
b. XIF le variables
SVNT
number
Unit
number
Variable name Type
LONMARK
SNVT No.
Description Condition Note
0 0 nviOnOff_0
SNVT_
switch
95 On/Off order
Byte 1: Value 0 (Fixed)
Byte 2: State 0 = STOP
State 1 = RUN
Allow an in-
terval of at
least 5 sec.
between 2
consecutive
orders to
any unit on
a H-Link
1 0 nviMode_0
SNVT_
hvac_mode
108
Operation mode set-
ting
1 byte:
1 = HVAC_HEAT (Heating)
3 = HVAC_COOL (Cooling)
5 = HVAC_PRE_COOL
(Dehumidication)
9 = HVAC_FAN_ONLY
(Ventilation)
2 0
nviSet-
Point_0
SNVT_
temp_p
105 Temperature setting
2 Bytes: 1700 ~ 3000 = 17
~ 30 ºC
3 0
nvi-
FanSpeed_0
SNVT_
switch
95 Fan speed setting
Byte 1: Value 1: Low,
Value 2: Middle,
Value 3: High
Byte 2: State 0 (Fixed)
4 0 nviLouver_0
SNVT_
switch
95 Louver setting
Byte 1: Value 0: 20, 1: 25, 2:
30, 3: 35, 4:
45, 5: 55, 6:
70, 7: Auto
Byte 2: State 0 (Fixed)
5 0 nviProtect_0
SNVT_
switch
95
Remote control order
enabled
Byte 1: Value 0 (Fixed)
Byte 2: State 0: RCS ena-
bled
State 1: RCS disa-
bled

Hitachi PSC-A1T Specifications

General

Brand	Hitachi
Model	PSC-A1T
Category	Controller
Language	English