2. Compressor enabled.
3. Compressor speed is set zero.
4. Stator heater power setting is from 10~50.
If the system sends a speed demand to the drive while
the stator is heating, the drive should stop stator
heating and start the compressor. While running, if the
system sends a zero-speed command, the drive
should shut down the compressor automatically, and
then resume the stator heating to the value saved in
Stator Heater Power Memory Register (a value or zero
= off).
Status Indication
There is one control chip on the drive board. And drive
board has both RGB LED (DS1), and Rolling 7-
segment LED for drive status display.
4 states of RGB LED (DS1-LED)
1. PURPLE: When the drive is in programming
mode via bootloader.
2. GREEN Solid: When the drive is in normal state
(no faults) in standby mode and the compressor
is not running. The LED will be solid GREEN.
3. GREEN Blinking: When the compressor is
running, LED will blink at 1Hz in GREEN.
4. RED: When the drive has any active faults or
protections.
Rolling LED
There is also a Rolling LED for drive status display.
For further information, refer to Tables 7 & 8 for
detailed functionality and display status modes.
Power Interrupt
Power interrupts can result in a drive trip that won't
harm the drive. The drive can withstand interrupts of a
short duration (<=10 ms) but will trip on anything
longer.
Drive Configuration
Another feature available on the drive is the option to
change communication parameters, configure the drive
to use different types of compressors and sensors.
Modbus registers 200 - 207 and 210 -213 serve this
function (refer to
Modbus Map
within the
Addendum
for details).
These options are password protected. Register 200
must have the correct password written before any
parameters can be changed. All register functions and
default values are located in the
Modbus Map
.
•
Registers 201-204 are for communication
parameters.
•
Registers 203 and 204 are automatically
configured by the drive, based on baud rate and
parity information from the system controller.
•
Register 205 is for compressor model type.
•
Registers 206 & 207 are for sensor type
configurations.
•
Register 210 is controlled shutdown rate
configuration.
•
Register 211 and 212 are configured for speed
ramp-up and ramp-down rate configuration.
•
Register 213 is configured for ramp-up speed
during compressor start-up.
Once configured only changes to registers 201-204 will
require power cycle for the changes to be
implemented.
Refer to
Addendum
for configuration process flow and
communication settings process flow.
High Pressure Cut Out
CN5 on EV2080X-LX-XXX is a 2-port connector on
drive model. The output is a 3.3VDC signal. The high-
pressure cutout switch must be normally closed. If the
switch is open, the drive will not operate. The output
current for the high-pressure contact will range from
300uA to 400uA. To ensure correct functionality of the
high-pressure switch for the system’s lifetime, typically
gold-plated contacts are recommended. Refer Table-2
for detailed pinout.
This port is hardware Protected Electronic Circuit (PEC),
and software is Class-B according to UL60730-1.
Drive Cooling
Because of the power electronics used in the drive and
the associated heat generation, drive cooling is
required to keep the drive components in their design
temperature range. The allowable temperature range
of the drive (The ambient air surrounding the drive) is -
4°F to 131°F. Drive temperature should be monitored
during system development at system extreme
conditions to ensure that the maximum allowable drive
temperature isn’t exceeded. The highest drive
temperature will typically occur during high load
conditions or during high drive ambient.
Drive Over Temperature Protection
The drive is self-protected against high internal
temperatures. There are different modes of protection;
temperature high and foldback. For temperature high
refer to
Troubleshooting Table
within
Addendum
.
For foldback protection refer to Section 2 in the
Addendum
for more information.
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