Sullair SUPERVISOR CONTROLLER Instruction Manual

Section 2
SEQUENCING WITH
MULTIPLE CONTROLLERS
9
decrement by 100 hours. The maximum value for this parameter is 30,000 hours. The
number will roll over to zero if this number is exceeded.
Com Number (COM ID#[7]) - Must be unique ID number for every machine in the
system. If there are three machines in a system, for example, they must be numbered 1,
2 and 3. Up to 16 machines may be sequenced in systems using Supervisor and WS
Controllers. Systems containing one or more Supervisor II Deluxe controllers are limited
to eight compressors in a sequence.
Machines (LAST COM[12]) - Set as the total number of machines in a system.
Low Press (LOWEST[13]) - Set as the lowest allowable pressure before a machine has
to start. Normally this is 5 to 10 psi (0.3 to 0.7 bar) below the load pressure. If the
system pressure drops below this limit then the machine with the lowest SEQ HRS or
COM ID is started immediately. A machine will also start if the pressure is below the Trim
Low Setpoint for a period of time. The length of this time period is 0 to 120 seconds
depending on the pressure and is controlled by the Delayed Start Timer. The closer the
pressure is to LOWEST pressure the shorter the time. For example if the pressure drops
below the Trim Low Setpoint by 1 psi (0.07 bar), and remains there, a machine will start
in 120 seconds. If the pressure drops near LOWEST PRESSURE then a machine will
start after just a few seconds. Refer to Section 5 for details on Delayed Start Timer
operation.
Recover Time (RECOVER[14]) - Recovery time. This parameter adds a delay between
subsequent start, load and unload commands. Refer to Section 5 for further explanation
of Sequencing Timer operation.
Rotate (ROTATE[15]) - Rotate time for two-machine systems only. The rotate parameter
forces the trim machine to stop (allowing the other machine to start). The trim machine
will stop when its sequencing hours are more than a stopped machine sequencing hours
based on the rotate hours value.
For example, consider a two-machine system with SEQUENCING hours of 1000 and
ROTATE of 50 hours on each machine. If one machine is started and continuously
loaded, it will run until it's sequence hours are 1050 (50 hours more than the stopped
machine) then stop. The other machine will start and run until it's sequence hours are
1100 (50 more than the stopped machine) then stop, and so the machine will rotate back
and forth every 100 hours.
DO NOT enable Rotate mode when more than two machines are connected in a
sequence. Unexpected starts and stops may occur when manually starting o
r
stopping a machine in the sequence for maintenance.
NOTE
There are some systems where the trim machine never unloads or stops and
the second machine is never required in normal sequence operation. This
applies specifically to a two-machine system where one machine runs all the
time and the other is used onl
y
for backu
p
.

Sullair SUPERVISOR CONTROLLER Specifications

General

Brand	Sullair
Model	SUPERVISOR CONTROLLER
Category	Controller
Language	English