Sullair SUPERVISOR CONTROLLER, User Manual

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SUPERVISOR CONTROLLER™ USER MANUAL SECTION 6
34
6.2 OVERVIEW
The Sullair VSD drive application is custom designed
for operation of air compressors. All necessary
control functions are performed through the
Supervisor keypad. The drive functions as a module
on the Supervisor communications bus.
Relevant drive status data and compressor
performance are presented on the Supervisor
display. Its keypad provides simple setup and
adjustment of necessary drive parameters. Drive
controls are coordinated with internal compressor
controls, and with other Supervisor compressors in
sequenced systems. The Supervisor monitors drive
performance to provide motor thermal and other
protections in an easy-to-use, robust design.
WARNING
Before opening the variable speed drive
covers:
• Disconnect all power to the vari-
able speed drive.
• Wait a minimum of 5 (five) minutes
after all the lights on the keypad
are off. This allows time for the DC
bus capacitors to discharge.
• A hazard voltage may still remain
in the DC bus capacitors even if
the power has been turned off.
Confirm that the capacitors have
fully discharged by measuring
their voltage using a multimeter
set to measure DC voltage. Failure
to follow the above precautions
may cause death or severe injury.
CAUTION
Do not perform any meggar or voltage with-
stand tests on any part of the variable
speed drive or its components. Improper
testing may result in damage. Prior to any
tests or me surements of the motor or the
motor cable, disconnect the motor cable at
the variable speed drive output terminals
(U, V, W) to avoid damaging the variable
speed drive during motor or cable testing.
CAUTION
Do not touch any components on the circuit
boards. Static voltage discharge may dam-
age the components.
CAUTION
Install the variable speed drive in a well-
ventilated room that is not subject to tem-
perature extremes, high humidity, or con-
densation, and avoid locations that are
directly exposed to sunlight, or have high
concentrations of dust, corrosive gas,
explosive gas, inflammable gas, grinding
fluid mist, etc. Improper install tion may
result in a fire hazard.
CAUTION
Make sure that no power correction capaci-
tors are connected to the variable speed
drive output or the motor terminals to pre-
vent variable speed drive malfunction and
potential damage.
CAUTION
Make sure that the variable speed drive out-
put terminals (U, V, W) are not connected to
the utility line power as severe damage to
the variable speed drive may occur.