Section 3
COMPRESSOR OPERATION
17
parameter 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/
local).
S
SLAVE
--- Will respond to all messages,
but will not start or load unless comman-
dedtodosobyamessage.Thismodeis
used to control the machine from a master
computer.
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 onceasecond, starts, loads andun-
loads machines based on machine Com
ID#.
3.4 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.
3.5 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 operaton of the load
control solenoid valve.
COMMON FAULT (K4) Maybeusedtoprovideremote indication ofanypre---
alarm, maintenance or fault shutdown condition.
DRAIN VALVE (K5) Deluxe only --- controls asolenoid valvetoprovideau-
tomatic condensate removal.
FULL LOAD/MODULATE (K6) Deluxe only --- used with sequencing feature.
NOTE: All output relays will handle 8 amperes at 120/240 VAC.
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