Section 5
SUPERVISOR II
16
5.1 INTRODUCTION
Refer to Figure 5---1. The Supervisor II has a two
line display to s how temperature, pressure and s ta-
tus. It has a keypad for operating the compressor,
programming the control points and selecting dis-
plays. There is a graphic illustration with lamps that
light to show the item being displayed. The lamps
flash if that component is in an alarm condition.
5.2 KEYPAD
Thekeypadisusedtocontrolthemachineaswell
as display status and change setpoints. Refer to
figure 5---1 for following key descriptions.
S Stop --- Used to put the machine into
manual s top. It is also used to clear alarm
conditions.
S Continuous --- S t a r t s m a c h i n e i f n o a l a r m
conditions are present. Also used to clear
alarm conditions while machine is running.
S Auto --- Starts machine and selects auto
mode if no alarm conditions are present.
Also used to clear alarm conditions while
machine is running.
S Display --- Used to display pressures,
temperatures and other status information
(SeesectiononSTATUSDISPLAYS).
S Logo --- Used for various functions de-
scribed in later sections
S Program --- Used to enter the parameter
change mode where control parameters
may be displayed and changed (See PA -
RAMETER SETUP).
S Up arrow --- Used in status displays to
change displays and in parameter setup
mode to increment a value.
S Down arrow, lamp test --- U s e d i n s t a t u s
displays to change displays and in param-
eter setup mode to increment a value.
When in the default display the key will light
all the lamps for three seconds.
5.3 STATUS DISPLAYS
By default the line pressure (P2) and discharge
temperature(T2)areshownonthebottomlineof
the display, and machine status on the top line.
The following are the various machine status mes-
sages that indicate the state of the compressor:
(Display graphics shown below.)
S STOP --- C o m p r e s s o r i s o f f .
S STANDBY --- Compressor is off but a rmed
to start. This state may be entered because
of a power up, or the unload timer had ex-
pired a nd stopped the machine. NOTE :
The machine may start at any time.
S STARTING --- Machine is trying to start.
S OFF LOAD --- Machine is running and off
loaded.
S ON LOAD --- Machine is running and
loaded.
S RMT STOP --- C o m p r e s s o r i s o f f b u t
armed to start. The machine will start when
theremotestartcontactisclosed.NOTE:
the machine may start at any t ime.
S SEQ STOP --- Compressor is off but armed
to start. The machine w ill start when the se-
quencing conditions meet the critera to
start. NOTE : the machine may start at any
time.
This default display appears as follows:
STOP
110 350
If there are alarms active they will alternately be
shown with the default display. The machine status
will be displayed for 2 seconds then the alarms for 2
seconds each. For example:
T1 HI
110 350
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