Drives | QX7 LV Variable Torque HVAC
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QX7 Low Voltage

Variable Torqe HVAC

The Toshiba QX7 adjustable speed drive is designed for HVAC applications where harmonic content is critical to the power grid. The QX7's patented 18-pulse design is the most sensible solution for the high demands of the HVAC industry. The QX7 eliminates the need to add other filters and costly isolation transformers.

Specifications Manuals Brochures Drawings Software App. Notes
QX7 Standard Specifications
Voltage Class 460 V
Maximum HP
60
75
100
125
150
200
250
300
350
400
500
600
700
800
Drive Rating
77
96
124
156
190
240
302
370
450
492
600
740
900
960
AA Dimensions
100H X 30W X 24D
100H X 42W X 24D
105H X 76W X 24D
AE Dimensions
100H X 54W X 24D
100H X 66W X 24D
Consult Factory
AS Dimensions
100H X 54W X 24D
100H X 60W X 24D
100H X 84W X 24D
Consult Factory
Power Requirements
Output Frequency 0 to 299 Hz
Main Circuit Three-Phase, 460 V Input Auto-Transformer, 18-Pulse, IGBT Output
Power Terminlas Input (L1,L2,L3); Output (T1,T2,T3); DCL (PA,PB);Dc Bus (PA,PC)
Control Power DC Bus Control Power
Voltage Tolerence
±10%
Frequency Tolerence
±2%
Control Specifications
Control Method Sine Wave PWM System
V/Hz Control Variable Torque, Constant Torque
Overload Rating 120% for 60 Seconds, 100% Continuous
Frequency Setting EOI Interface, 0 to10 VDC, -10 to +10 VDC, 4 to 20 mA, Binary and Motorized Potentiometer Input
Frequency Precision Analog Input is 2% of Maximum Output; Digital Input is 0.01 Maximum Output
Frequency Resolution 0.01 Hz Operation Panel, 0.1 Hz Analog Input; 0 to 12-Bit A to D Converter
Accel./Decel. Time 0.1 to 6000 Seconds
Set Point Control PID Loop Control
Analog Inputs Four Programmable
Analog Outputs Two Programmable to 66 Functions
Inputs Terminals Eight Programmable to 33 Functions
Output Contacts Three Output Terminals Programmable to 66 Functions; One Form-C, Two 250 VAC Form-A
Communications Port RS232/485 and TTL Ports Standard
Protocol Optional Profibus, Devicenet, Modbus RTU, Metysys, TCP/IP Ethernet
Soft Stall Auto Load-Reduction Control Durring Overload Conditions
Retry Can Automatically Clear Fault upon Trip; Programmable to 10 Retries with up to 10 Seconds Between Each Retry
Restart Able to Restart to Catch a Spinning Motor
Interface
EOI Display 4 Line X 20 Character LCD, Backlit Screen, Flash-Upgradeable Software
Keypad Local/Remote, Manual/Auto, Speed Control, Setup/Program/Monitor, Run, Stop/Reset
Monitoring Monitors Over 30 Parameters
Dispay Units Display in Voltage, Amps, or Percent with Scaling Factor Multiplier
EOI Ports RS232/485 and TTL Ports Standard
Remote Mounting Up to 1000 Feet
Construction
Enclosure NEMA 1 Gasketed and Filtered
Panel Construction Free Standing, Front-Access Maintenance, Top/Bottom Cable Access
Ambient Conditions
Temperature 10 to 40°C or 14 to 104°F
Humidity Maximum 95% (Non-Condensing) Without Derating
Altitude Up to 1000 Meters or 3300 Feet Above Sea Level Without Derating
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