Carlyle 06ZCE1H3AA06013, Инструкция по применению

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16
VARIABLE FREQUENCY DRIVE GUIDELINES
Scope
Carlyle has conducted an extensive qualification program for our
R-134a, R-1234ze, or R-513A compressors and has approved the
following compressors for VFD application only. A summary of
the qualified models is presented in Table 9.
Compressor motor protection must be provided by the VFD. Car-
lyle Application Engineering should be contacted to verify that
the over-current protection meets Carlyle's requirements for UL-
rated motor overload protection and to verify the required over-
load settings.
It is important to work with the drive manufacturer to select a
drive appropriate for the application. Refrigeration screw com-
pressors provide a constant torque loading to the drive and also
have unique starting torque requirements. It is important that
the appropriate criteria are taken into consideration when select-
ing the type and size of the drive. The drive should not be sized
on the nominal HP rating of the compressor, but based on the
electrical data, including Nominal Voltage and MCC (Maxi-
mum Continuous Current), available in Tables 12-14.
It is also important to review items associated with the wiring of
the compressor and associated control system wiring, as special
precautions may be required to avoid interference between the
drive and other control wiring. There may also be restrictions on
the length and routing of the wires from the drive to the compres-
sor. These items should be reviewed with the drive manufacturer
to ensure all application guidelines are followed when installing
the drive. See Fig. 13 for compressor connection details.
Compressor Protection Limits and Guidelines
The compressors have been approved with an allowable speed
range as noted in Table 9. Motor current, discharge temperature
and motor temperature requirements must be monitored and
maintained within the allowable ranges through the entire VFD
speed range.
DISCHARGE TEMPERATURE
1. Compressor must be forced to 100% load if discharge tem-
perature

200°F (93.3°C).
2. Do no allow further reduction in compressor speed if dis-
charge temperature

190°F (87.8°C).
3. Discharge temperature liquid injection into the compres-
sor's economizer port is required to maintain discharge
temperature limits when operating the compressor below
60 Hz.
MOTOR TEMPERATURE
1. Compressor must be forced to Nominal Voltage as stated in
“Compressor Input Voltage.”
2. If operating at max speed, reducing speed will allow motor
to run on the rated V/F curve if motor temperature

260°F
(126.7°C)
NOTE: Different temperature limits may be required, depending
on the accuracy and response time of the sensors and control
system that are used, as well as the overall stability of the system
and desired safety factor.
MOTOR CURRENT
1. Compressor overcurrent protection must be provided by the
VFD.
2. The drive must trip at the MCC value listed in Tables 12-
14.
3. It is recommended to use the MHA value as “Nominal”
motor current with a protection factor of 1.1.
4. Motor cooling liquid injection into the suction line is
required to maintain the motor temperature limits when
operating the compressor below 60 Hz.
Compressor Input Voltage
The variable speed drive should fix the output voltage based on a
constant Volts-per-Hz curve running through the nominal voltage
and frequency stated in Tables 10 and 11, regardless of the nomi-
nal voltage supplied to the compressor. The drive should maintain
a constant V-Hz over the range of operation and should limit the
speed of the drive if the appropriate voltage cannot be maintained.
Under voltage should limit the speed (Hz) until the constant V-Hz
curve is reached. The VFD should also limit the amperage of the
compressor to the MCC (maximum continuous current) value
(lower amperage limits may be applied depending on the applica-
tion).
Figure 14 shows two sample voltage curves showing compressor
motor voltage (V) versus operating speed (Hz). As shown in the
graph, the motor voltage is lowered at lower operating speeds
while maintaining a fixed Volts/ Hz value. 06ZC and 06ZF models
allow operation at higher speeds than "nominal" and is expected
that the drive will be in constant horse-power output (fixed volt-
age) during that operation.
Table 9 — Variable Speed Model Summary
MODEL NUMBER
NOMINAL
HP
NOMINAL
VOLTS/
HERTZ
SPEED RANGE
06ZCE1H3AA06013
130
460V - 100 Hz
25 - 105 Hz 06ZCE1T3AA06013 380V - 100 Hz
06ZCE1Y6AA06013 200V - 100 Hz
06ZFC2H3AA06013
215
460V - 98 Hz
25 - 98 Hz 06ZFC2T3AA06013 380V - 98 Hz
06ZFC2Y6AA06013 200V - 98 Hz
06ZJG3H3AA06013
325
460V - 95 Hz
25-95 Hz
06ZJG3T3AA06013 380V - 95 Hz
Table 10 — Variable Speed Drive Input Voltage /
Compressor Motor Voltage
Variable Speed Drive Input Voltage Compressor Motor Voltage
208/230V-3-60Hz 200V
380V-3-60Hz 380V
460V-3-60Hz 460V
575V-3-60Hz 460V
200V-3-50Hz 200V
400V-3-50Hz 380V