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Product Description
The Masterflux 025A0134 Motor Controller employs the use of an ST microprocessor for control of the motor resulting in improved control/performance. The 025A0134 Motor Controller shall be designed to provide efficient control and monitoring of a DC powered brushless hermetic compressor.
The controller shall provide a constant speed as specified by the speed set-point input, independent of motor voltage and load unless one of the following limitations is exceeded.
Current limit, this is where the average current the motor requires to maintain the commanded speed exceeds 55 amps. If the load requires more than 55 amps then the speed will be reduced accordingly. Voltage limitation, this is where the motor supply voltage is not high enough to achieve the commanded speed.
Fault conditions shall be monitored continuously. Upon detection of a fault, the motor is shut down. The motor controller will make up to eleven attempts to restart the motor after the fault condition is cleared. The controller will indicate the fault state by a TTL level output. For a Locked Rotor fault or An Under Voltage fault or Over Voltage fault the controller will delay for ten seconds before attempting to restart the motor and also delay for ten seconds between subsequent start attempts. For an Over Temperature fault the controller will delay for five seconds before attempting a restart and also delay for five seconds between subsequent restart attempts. Once the fault condition is cleared and the motor is restarted then the TTL level fault indicator is cleared.
If the motor fails to start after eleven tries for a Locked Rotor fault or an Over Temperature fault it will cease trying to restart the motor and power must be cycled off and on before the motor can be restarted. The speed set-point is controlled by a 0 to 5 volt non-isolated analog input. The controller shall provide a TTL level tachometer output.
Control and indicator signals connect to a six pin Molex header.
The motor drive transistors shall be cooled by a large aluminum finned heatsink. A temperature sensor embedded in the heatsink will measure the heatsink temperature. The motor controller will shut down the motor if the heatsink temperature exceeds 100° C. The heatsink provides the mounting points for the assembly with two threaded holes at each end. The heatsink is electrically isolated from the circuitry. There is no input fusing or reverse polarity protection provided.
The controller will operate from 0° to 50° C. The PCA conformal coating shall be a UL recognized type SR (silicone resin) based material to protect it from corrosion.
Features
• Locked rotor detection
• Motor Drive FET thermal shutdown
• Motor case thermal shutdown
• Under/Over voltage shutdown
• Low speed protection
• Current limiting
• Fault output
• Tachometer output
• Fused motor voltage (Vm) connector
• 2 Fan Power Outputs
Typically used with:
• Compressor Model: SIERRA01-0716Y3
• Wiring Harness: N/A
• Interface Device: 030A0117
• Power Input Cable: 14955303
• Mounting Kit: LP157; LP158; LP56
• PVE lubricant
Masterflux Controller Specification Sheet available
The controller shall provide a constant speed as specified by the speed set-point input, independent of motor voltage and load unless one of the following limitations is exceeded.
Current limit, this is where the average current the motor requires to maintain the commanded speed exceeds 55 amps. If the load requires more than 55 amps then the speed will be reduced accordingly. Voltage limitation, this is where the motor supply voltage is not high enough to achieve the commanded speed.
Fault conditions shall be monitored continuously. Upon detection of a fault, the motor is shut down. The motor controller will make up to eleven attempts to restart the motor after the fault condition is cleared. The controller will indicate the fault state by a TTL level output. For a Locked Rotor fault or An Under Voltage fault or Over Voltage fault the controller will delay for ten seconds before attempting to restart the motor and also delay for ten seconds between subsequent start attempts. For an Over Temperature fault the controller will delay for five seconds before attempting a restart and also delay for five seconds between subsequent restart attempts. Once the fault condition is cleared and the motor is restarted then the TTL level fault indicator is cleared.
If the motor fails to start after eleven tries for a Locked Rotor fault or an Over Temperature fault it will cease trying to restart the motor and power must be cycled off and on before the motor can be restarted. The speed set-point is controlled by a 0 to 5 volt non-isolated analog input. The controller shall provide a TTL level tachometer output.
Control and indicator signals connect to a six pin Molex header.
The motor drive transistors shall be cooled by a large aluminum finned heatsink. A temperature sensor embedded in the heatsink will measure the heatsink temperature. The motor controller will shut down the motor if the heatsink temperature exceeds 100° C. The heatsink provides the mounting points for the assembly with two threaded holes at each end. The heatsink is electrically isolated from the circuitry. There is no input fusing or reverse polarity protection provided.
The controller will operate from 0° to 50° C. The PCA conformal coating shall be a UL recognized type SR (silicone resin) based material to protect it from corrosion.
Features
• Locked rotor detection
• Motor Drive FET thermal shutdown
• Motor case thermal shutdown
• Under/Over voltage shutdown
• Low speed protection
• Current limiting
• Fault output
• Tachometer output
• Fused motor voltage (Vm) connector
• 2 Fan Power Outputs
Typically used with:
• Compressor Model: SIERRA01-0716Y3
• Wiring Harness: N/A
• Interface Device: 030A0117
• Power Input Cable: 14955303
• Mounting Kit: LP157; LP158; LP56
• PVE lubricant
Masterflux Controller Specification Sheet available
Additional Information
| Lead Time | 10-12 weeks |
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