Sullair LS-20S, Operator'S Manual And Parts List

Page: 37 / 102

Section 6
SUPERVISOR II
31
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 pow-
er 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 II Sequencing
& Protocol Manual (P/N 02250057--696).
S
DISABLED -- Responds to status and pa-
rameter change messages via the RS485
network but will not respond to start, stop,
load or unload messages.
S
REMOTE -- Responds to status and pa-
rameter change messages but will not re-
spond to start, stop, load or unload mes-
sages. The remote inputs and outputs are
enabled (start/stop, load/unload, master/lo-
cal).
S
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.
NOTE
Slave mode is not recommended for operational
usage. C onsult Fact or y f or f ur t her det ails.
S
HOURS -- Sends status message about
once a second, starts, loads and unloads
machines based on sequencing hours.
S
COM ID # -- Sends status message about
once a second, starts, loads and unloads
machines based on machine Com ID#.
6.7 PURPOSE OF CONTROLS
SWITCH OPERATION
EMERGENCY STOP SWITCH Pushing in this switch, found adjacent to the Supervi-
sor, cuts all AC outputs from the latter and de--ener-
gizes the starter. A fault message (E STOP) is dis-
played by the Supervisor until the button is pulled out
and the “ O ” pad is depressed.
6.8 SUPERVISOR OUTPUT RELAYS
RELAY OPERATION
RUN RELAY (K1) Contact closure energizes the compressor starter.
*--DELTA (K2) A timed contact used to provide wye--delta transition
time.
UNLOAD/LOAD (K3) Controls ON LOAD/OFF LOAD operation of the load
control solenoid valve.
COMMON FAULT (K4) May be used to provide remote indication of any pre--
alarm, maintenance or fault shutdown condition.
DRAIN VALVE (K5) Deluxe only -- controls a solenoid valve to provide auto-
matic condensate removal.
FULL LOAD/MODULATE (K6) Deluxe only -- used with sequencing feature.
NOTE: All output relays will handle 8 amperes at 120/240 VAC.
6.9 MAINTENANCE INTRODUCTION
As you proceed in reading this section, it will be easy
to see that Maintenance Program for the air com-
pressor is quite minimal. The Supervisor monitors
the status of the air filter, fluid filter, and separator
elements. When maintenance to these devices is
required, the Supervisor will display the appropriate
maintenance message and flash the location LED
on the graphics map as a visual reminder.
WARNING
!
DO NOT remove caps, plugs, and/or other com-
ponents when compressor is running or pressur-
ized.
Stop compressor and relieve all internal pressure
before doing so.