Basic Introduction; Keypad; Status Displays - Sullair LS-20S Operator's Manual And Parts List

6.1 BASIC INTRODUCTION

Refer to Figure 6--1. The Supervisor II has a two line
display to show temperature, pressure and status. It
has a keypad for operating the compressor, pro-
gramming the control points and selecting displays.
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

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.
S Stop -- Used to put the machine into manu-
al stop. It is also used to clear alarm condi-
tions.
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, tem-
peratures and other status information (See
section on STATUS DISPLAYS).
DSP
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).
PRG
S Up arrow -- Used in status displays to
change displays and in parameter setup
O
I
SUPERVISOR II
mode to increment a value.
S Down arrow, lamp test -- Used in status
displays to change displays and in parame-
ter 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 tem-
perature (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 in SEQUENCE mode.
S RMT STOP -- Compressor is off but armed
to start. The machine will start when the re-
mote 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:
STOP
110 180
Section 6
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