Basic Introduction; Keypad; Status Displays - Sullair LS-20T Operator's Manual

6.1 BASIC INTRODUCTION

Refer to Figure 6---1. The Supervisor II has a two
line display to show temperature, pressure and sta-
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.
6.2 KEYPAD---ALL MODELS
The keypad is used to control the machine as well
as display status and change setpoints. Refer to
figure 6 --- 1 for following key descriptions.
Stop --- Used to put the machine into
S
manual stop. It is also used to clear alarm
conditions.
S Continuous --- Starts machine if no alarm
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
(See section on STATUS DISPLAYS).
DSP
Logo --- Used for various functions de-
S
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).
PRG
Up arrow --- Used in status displays to
S
change displays and in parameter setup
mode to increment a value.
S Down arrow, lamp test --- Used in status
O
I
SUPERVISOR II DESCRIPTION
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.

6.3 STATUS DISPLAYS

By default the line pressure (P2) and discharge
temperature (T1) are shown on the bottom line of
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 --- Compressor is off.
S STANDBY --- Compressor is off but armed
to start. This state may be entered because
of a power up, or the unload timer had ex-
pired and 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 FULL LD --- Machine is running and fully
loaded. This state is only displayed if the
machine has a full load valve.
S RMT STOP --- Compressor is off but
armed to start. The machine will start when
the remote start contact is closed. NOTE :
the machine may start at any time.
S SEQ STOP --- Compressor is off but armed
to start. The machine will start when the se-
quencing conditions meet the criteria to
start. NOTE : the machine may start at any
time.
This default display appears as follows:
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:
To view other status press the DSP key. All temper-
atures and pressures may be displayed as well as
Section 6
STOP
110 180
T1 HI
110 180
19