Section 5
OPERATION
32
common fault relay will be turned off, if engaged,
and it will try to clear the alarm and maintenance
indicators. Regardless of what the compressor is
doing, pressing “
” puts the Supervisor in
manual stop mode.
AUTOMATIC OPERATION MODE
In this mode the compressor will start if line pres-
sure (P2) is less than the
LOAD
parameter. It will
stop if the compressor runs unloaded for the num-
ber of minutes indicated by the
UNLD TIM
parame-
ter . To put the compressor in automatic mode press
“
”. If P2 is already less than
LOAD
the com-
pressor will start immediately, otherwise the system
status will indicate
STANDBY
and the LED marked
AUTO
will flash.
If the compressor is already running, but in continu-
ous mode, pressing “
” will switch operation to
automatic. Pressing “
” while already running
in automatic mode will cause the Supervisor to turn
off the common fault relay, if engaged, and clear
any maintenance indicators.
In automatic mode the compressor can be stopped
manually by pressing “
”. Stopping the com-
pressor using “
” will put the Supervisor in
manual stop mode.
Regardless of whether in “automatic” or “manual”
mode, control of the load solenoid will be based on
the parameters
UNLD
and
LOAD
. This operation is
as follows:
P2 > UNLD —> load solenoid turned off
P2 < LOAD —> load solenoid turned on
POWER FAILURE RESTART
If the restart timer (RST TIME parameter) is dis-
abled the compressor will not try to start after a
power up. If this time is set to a value the machine
will go into standby after power up. When the line
pressure drops below the load setpoint, the restart
timer will start timing. When the timer expires the
machine will start.
SEQUENCING MODES
The following is a brief description of sequencing
modes, for details see the Supervisor Sequencing
& Protocol Manual (P/N 02250139-197).
• DISABLED
- Responds to status and
parameter change messages via the RS485
network but will not respond to start, stop,
load or unload messages.
• REMOTE
- Responds to status and param-
eter change messages but will not respond
to start, stop, load or unload messages. The
remote inputs and outputs are enabled
(start/stop, load/unload, master/local).
• SLAVE
- Will respond to all messages, but
will not start or load unless commanded to
do so by a message. This mode is used to
control the machine from a master comput-
er.
• HOURS
- Sends status message about
once a second, starts, loads and unloads
machines based on sequencing hours.
• COM ID #
- Sends status message about
once a second, starts, loads and unloads
machines based on machine Com ID#.
RUN RELAY (K1)
*-DELTA (K2)
UNLOAD/LOAD (K3)
COMMON FAULT (K4)
DRAIN VALVE (K5)
FULL LOAD/MODULATE (K6)
Contact closure energizes the compressor starter.
A timed contact used to provide wye-delta transition time.
Controls ON LOAD/OFF LOAD operator of the load control
solenoid valve.
May be used to provide remote indication of any pre-alarm,
maintenance or fault shutdown condition.
Controls a solenoid valve to provide automatic condensate
removal.
Used with sequencing feature.
NOTE: All output relays will handle 8 amperes at 120/240 VAC.
5.5 SUPERVISOR II OUTPUT RELAYS
RELAY
OPERATION
Summary of Contents for LS20TS
Page 6: ......
Page 20: ...Section 2 DESCRIPTION 14 Figure 2 4A Control System Diagram Functional Components ...
Page 21: ...Section 2 DESCRIPTION 15 Figure 2 4B Control System Diagram START ...
Page 22: ...Section 2 DESCRIPTION 16 Figure 2 4C Control System Diagram MODULATION ...
Page 23: ...Section 2 DESCRIPTION 17 Figure 2 4D Control System Diagram FULL LOAD ...
Page 24: ...Section 2 DESCRIPTION 18 Figure 2 4E Control System Diagram UNLOAD ...
Page 40: ...NOTES 34 ...
Page 50: ...NOTES 44 ...
Page 53: ...NOTES 47 ...
Page 56: ...Section 8 ILLUSTRATIONS AND PARTS LIST 50 02250135 237R01 8 4 AIR INLET SYSTEM ...
Page 58: ...Section 8 ILLUSTRATIONS AND PARTS LIST 52 02250135 237R01 8 4 AIR INLET SYSTEM ...
Page 72: ...Section 8 ILLUSTRATIONS AND PARTS LIST 66 02250138 950R01 8 9 DISCHARGE SYSTEM ...
Page 74: ...Section 8 ILLUSTRATIONS AND PARTS LIST 68 02250138 950R01 8 9 DISCHARGE SYSTEM ...
Page 76: ...Section 8 ILLUSTRATIONS AND PARTS LIST 70 02250138 950R01 8 9 DISCHARGE SYSTEM ...
Page 78: ...Section 8 ILLUSTRATIONS AND PARTS LIST 72 02250139 578R00 8 10 CONTROL START SYSTEM ...
Page 80: ...Section 8 ILLUSTRATIONS AND PARTS LIST 74 02250139 578R00 8 10 CONTROL START SYSTEM ...
Page 82: ...Section 8 ILLUSTRATIONS AND PARTS LIST 76 02250137 724R02 8 11 CONTROL PANEL ...
Page 84: ...Section 8 ILLUSTRATIONS AND PARTS LIST 78 8 12 ENCLOSURE AND ENCLOSURE DECALS ...
Page 86: ...Section 8 ILLUSTRATIONS AND PARTS LIST 80 8 13 DECAL GROUP ...
Page 88: ...Section 8 ILLUSTRATIONS AND PARTS LIST 82 8 13 DECAL GROUP ...
Page 90: ...Section 8 ILLUSTRATIONS AND PARTS LIST 84 8 13 DECAL GROUP ...
Page 92: ...Section 8 ILLUSTRATIONS AND PARTS LIST 86 8 14 DECAL LOCATIONS OPEN WATER COOLED ...
Page 94: ...Section 8 ILLUSTRATIONS AND PARTS LIST 88 8 15 DECAL LOCATIONS CONTROL BOX ...
Page 97: ...NOTES 91 ...