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SECTION 3
RS2000 V4.xx INSTRUCTIONS
OPERATING MODES
Version 4 software provides four operating modes. These may be selected in the adjustments. While
operating, the selected mode is displayed in the lower right corner of the message window.
Constant Run Mode Operation -
This mode is best used in applications where there are no long periods
of unloaded operation, or for minimum response time to sudden demands. The compressor unit will start
and run continuously, using its controls to load and unload the compressor. This matches average
delivery to demand.
When the air demand is less than the compressor capacity, the pressure rises to the unload point of the
control. It will then unload (but not blow down) and will not deliver any air to the system. Air demands
are supplied by air stored in receivers and plant piping. When the pressure falls to halfway between the
unload and load pressures, the controller again fully loads the compressor.
When first starting, the controller will keep the compressor fully unloaded and blown down until the
system pressure drops below the load pressure. Once loaded, the reservoir will remain fully charged,
regardless of demand. Responses to demand are thus immediate, and pressures are maintained in the
upper portion of the programmed control band.
The BD timer and Auto timer are not used while in this mode.
Low Demand Mode Operation -
The low demand mode reduces power consumption by relieving
pressure in the reservoir during unloaded operation. This mode is best used where there is moderate air
storage and there are unloaded periods during the day, but frequent motor starting and stopping is
undesirable. During periods of moderate to high demands, this mode is identical to the constant-run
mode described above.
During low demand periods, the controller will also open the blowdown valve while unloaded, to minimize
the motor load. A timer is reset when this occurs. Plant demands and control air pressure are supplied
from the plant air system while the compressor is unloaded. When the system air pressure drops to the
load pressure, the blowdown valve recloses and the compressor fully loads.
Subsequent blowdown periods are not allowed until the timer has completed its cycle. This cycle
eliminates frequent blowdowns during moderate loads, and the energy required to repressurize the
reservoir. The timer is adjustable from 1 to 20 minutes.
The Auto timer is not used while in this mode.
Automatic Mode Operation -
This mode provides automatic start and timed stop, and is best used in
applications with long unloaded periods and adequate storage to allow the compressor to be stopped for
periods of light demands. Operation during periods of moderate to heavy demands are identical to the
low demand and constant run modes described above.
The automatic time delay is adjustable from 1 to 20 minutes. If the controller operates unloaded for this
period with no demand, the compressor drive motor is halted to eliminate its power consumption. The
controls will remain in this state until pressure drops below the load pressure.
This is the most commonly selected mode of operation, as it automatically will operate the compressor
unit in the most efficient manner for the demand of the air system.
Sequence Mode Operation -
This mode provides for communication between controllers, operating only
as many as are required for economical operation. This is best used on applications with large storage
capacity and diverse loads.
Summary of Contents for AUTO SENTRY RS2000
Page 11: ...13 8 623 Page 7 Figure 3 1 FLOW CHART FOR SETUP PROGRAMMING V4 xx 300EBC1255 E Ref Drawing...
Page 21: ...13 8 623 Page 17 300EFC546 A Ref Drawing Page 1 of 2 Figure 3 2 TYPICAL WIRING DIAGRAM V4 xx...
Page 22: ...13 8 623 Page 18 WIRING DIAGRAM 300EFC546 A Ref Drawing Pag 2 of 2...
Page 30: ...13 8 623 Page 26 FIGURE 4 2 TYPICAL WIRING DIAGRAM V6 xx 303EFC546 A Ref Drawing Page 1 of 2...
Page 31: ...13 8 623 Page 27 303EFC546 A Ref Drawing Page 2 of 2...