RXB PLUS ROTARY SCREW COMPRESSOR UNITS S70-101 IOM
Page 23
OPERATION
TEMPERATURE-PRESSURE CONTROL
PROGRAM (OPTION) (continued)
PRESS SETPOINT - The capacity-control setpoint is used
when in the Setback mode and Pressure is selected as the
capacity control desired.
TEMP SETPOINT - The capacity-control setpoint is used
when in the Setback mode and Temperature is selected as
the capacity control desired.
NOTE: To change the Setback setpoints, refer to “TO
CHANGE THE ADJUSTABLE SETPOINTS”.
ANALOG OFFSET DISPLAY*
ANALOG OFFSET:
Suc Disch Oil Sep Filt Spare Econ
Temp +0 +0 0 +0 +0.0
Pres -1.0 +0 +0 +0 -3
The Analog Offset Display is accessed by pressing [+/-] key.
All analog values can be offset + or - 3 to 10 units depend-
ing on which value is being adjusted. Use the [STEP] key to
step to the desired setpoint. Press the [CHANGE] key to
change the value of the offset by 1. The actual analog value
will be displayed on the top line of the display. The “Filt” and
“Econ” and channels are displayed but do not pertain to the
standard program.
AUTO CYCLE PRESS CONTROL DISPLAY *
AUTO CYCLE Start[40.0 g ] Timer[01 min]
C.C.Press Stop [25.0 g ] Timer[01 min]
=[35.5 g ] Min SV-[50%] Active-[No ]
* for Temp Menu, F1 to Exit
The Auto Cycle Pressure Control Display is accessed by
pressing the [F4] key.
The Auto Cycle display provides for independently adjus-
table setpoints to turn the compressor on and off in response
to the suction pressure or as an adjustable setpoint to limit
the minimum slide valve position. The compressor can be
started and stopped by the following pressure setpoints even
if the capacity control is selected to temperature.
START - The suction pressure must be greater than or equal
to the “START” setpoint in order to start the compressor.
This setpoint works in conjunction with the “TIMER” setpoint
located to the right of it on the display.
(Start) TIMER - This is a time delay used to start the com-
pressor. The timer only accumulates time whenever the pres-
sure rises to or above the “START” setpoint and will reset if
the pressure drops below the “START” setpoint.
STOP - The suction pressure must be less than or equal to
the displayed “STOP” setpoint limit in order to stop the com-
pressor. This setpoint works in conjunction with the “TIMER”
setpoint located to the right of it on the display. NOTE: This
limit must be set higher than Low Suction Pressure Cut-
out and the Low Suction Pressure Alarm setpoints.
(Stop) TIMER - The (stop) TIMER is a time delay used to
stop the compressor. The timer only accumulates time when-
ever the pressure drops to or below the “STOP”setpoint and
will reset if the pressure rises above the “STOP” setpoint.
MIN SV - Minimum Slide Valve Position, shown as a per-
centage, will limit the slide valve position to the displayed
setpoint.
ACTIVE - Indicates whether Auto Cycle is active or not. Press
the [CHANGE] key while at this setpoint to change the sta-
tus. Upon deactivation, the compressor will return to the
previous mode of operation.
AUTO CYCLE TEMP CONTROL DISPLAY *
AUTO CYCLE Start[+50.0 F] Timer[01 min]
C.C. Temp Stop [=20.0 F] Timer[01 min]
=[+44.3 F] Min SV-[50%] Active-[Yes]
* for Press Menu, F1 to Exit
The Auto Cycle Temperature Control Display is accessed
by pressing [F4] and then the [ * ] keys.
The Auto Cycle display provides for independently adjust-
able setpoints to turn the compressor on and off in response
to the suction temperature or as an adjustable setpoint to
limit the minimum slide valve position. The compressor can
be started and stopped by the following temperature setpoints,
even if the capacity control is selected to pressure.
START - The CC (capacity control) Temperature must be
greater than or equal to the “START” setpoint in order to
start the compressor. This setpoint works in conjunction with
the “TIMER” setpoint located to the right of it on the display.
(Start) TIMER - This is a time delay used to start the com-
pressor. The timer only accumulates time whenever the CC
Temperature rises to or above the “START” setpoint and
will reset if the CC Temperature drops below the “START”
setpoint.
STOP - The CC Temperature must be less than or equal to
the “STOP” setpoint in order to stop the compressor. This
setpoint works in conjunction with the “TIMER” setpoint lo-
cated to the right of it on the display.
(Stop) TIMER - The (stop) TIMER is a time delay used to
stop the compressor. The timer only accumulates time when-
ever the CC Temperature drops to or below the “STOP”
setpoint and will reset if the CC Temperature rises above
the “STOP” setpoint.
MIN SV - Minimum Slide Valve Position, shown as a per-
centage, will limit the slide valve position to the displayed
setpoint.
ACTIVE - It indicates whether Auto Cycle is active or not.
Press the [CHANGE] key while at this setpoint to change
the status. Upon deactivation, the compressor will return to
the previous mode of operation.
TELECOMMUNICATIONS COMMANDS
ADDED OR CHANGED:
Command:
#01DS will send the Adjustable Setpoints pages 1 and 2.
#01D3 will send the Adjustable Setpoint page 3.
#01DC will send both Auto Cycle Displays.
#01D+ will send the Analog Offset Display.
*Display for illustrative purposes only.
To Next Page
Loading...
