Hitachi PC-ARF Technical Catalogue page 295

5 Centralised remote controls
PSC-A64GT
6 Demand Function Rotation
When the demand control signal is ON, the operation starting target group for "Demand Function" is selected randomly.
After that, "Demand Function" operation is started from selected group to the small numbered group at every intervals for
15 seconds as shown below.
Example.
In the case of 6 groups
Group 5 Group 4 Group 3
Selected Group
The numbered group arrangement is shown below.
Monitor 1 (Group)
Block 1 Block 2
Group 1 Group 2
Group 1 Group 2
Group 3 Group 4
Group 3 Group 4
Group 5 Group 6
Group 5 Group 6
Group 7 Group 8
Group 7 Group 8
Group 9 Group 10
Group 9 Group 10
Group 11 Group 12
Group 11 Group 12
Group 13 Group 14
Group 13 Group 14
Group 15 Group 16
Group 15 Group 16
External Output Function
1 All Run Output
External output for indoor unit operation signal in the target group. The operation signal outputs even if one indoor unit in
the target group is operated.
2 External Output Alarm
External output alarm signal for indoor unit in the target group. The alarm signal outputs even if one indoor unit abnor-
mality occurs in the target group.
External Input/Output Terminals Specification
Input Terminal:
Non-voltage contact (normal open) for demand signal Input DC12V, 10 mmA.
The switching of the contact is available.
Pulse width is 300 mm or more for pulse signal input.
Output Terminal:
Contact (voltage is applied) for signal Output DC12V
Recommended Relay: MY Relay manufactured by Omron Corporation
(Do not use a diode built-in type.)
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TCGB0106 rev.0 - 12/2014
Group 2 Group 1 Group 6
Block 3 Block 4
Group 1 Group 2
Group 1 Group 2
Group 3 Group 4
Group 3 Group 4
Group 5 Group 6
Group 5 Group 6
Group 7 Group 8
Group 7 Group 8
Group 9 Group 10
Group 9 Group 10
Group 11 Group 12
Group 11 Group 12
Group 13 Group 14
Group 13 Group 14
Group 15 Group 16
Group 15 Group 16
Numbered Group Arrangement
Monitor 2 (Block)
All Groups Block 1 Block 2 Block 3
Group 1 Group 2
Group 5 Group 6
Group 9 Group 10
Group 13 Group 14
Block 4
Group 3 Group 4
Group 7 Group 8
Group 11 Group 12
Group 15 Group 16
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