Hitachi PC-ARF Technical Catalogue page 294

5 Centralised remote controls
PSC-A64GT
External Input Function
1 All Run/Stop (Level): All groups simultaneously Run/Stop operation by the external input signal
2 All Run (Pulse): All groups simultaneously Run operation by the external pulse input signal
3 All Stop (Pulse): All groups simultaneously Stop operation by the external pulse signal input
4 Emergency Stop (Level): All groups simultaneously Stop operating on receiving an the external emergency stop sig-
nal. While an "Emergency Stop" is performed, the LCD of the remote control switch displays "Central Control" and the
operation cannot be changed from the remote control switch.
In the case using with other central stations, "Run/Stop" operation is available from other central stations even if during
the emergency stop.
5 Demand Control Function
A peak demand electrical consumption is cut by the external demand control signal. Only the input terminal 1 is available
for the external demand signal. The operation mode of selected group will be changed by the demand signal as follows.
Demand Function 1
Demand Function 2 (*3)
Fan Operation with RCS Operation Prohibited Mode
Demand Function 3 (*4)
Demand Function 4 (*5)
(*1): The target groups of "Demand Function" are controlled from large numbered group at intervals of 15 seconds. The numbered
group arrangement is shown below.
(*2): The target groups of "Demand Function" are controlled from a small numbered group at intervals of 15 seconds. The numbered
group arrangement is shown below.
(*3): When "AUTO" operation is performed, or "Fixing Operation Mode" is enabled at "Optional Function Setting".
(*4): When "AUTO" operation is performed, or "Fixing Operation Mode" or "Fixing Temperature Setting" is enabled at "Optional Func-
tion Setting".
(*5): When "Fixing Temperature Setting" is enabled at "Optional Function Setting".
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TCGB0106 rev.0 - 12/2014
Demand Signal ON (*1)
Indoor Unit Operation Stop with RCS Operation
Prohibited Mode
Cooling or Dry Operation
Heat Operation
Operation Stop with RCS Operation Prohibited
Mode
Indoor Unit Operation Stop with RCS Operation
Prohibited Mode
Demand Signal OFF (*2)
The operating condition returns to previous status.
The setting temperature is set as follows.
Cooling and Dry Operation............28 ºC,
Heating Operation..........................20 ºC
The operating condition returns to previous status
except for setting temperature.