Toshiba Q7 Low Voltage Variable Torque HVAC Drive

Toshiba Updated: 2007-07-17
Toshiba Q7 Low Voltage Variable Torque HVAC Drive

The Q7 Series Adjustable Speed Drive combines our state-of-the-art IGBTs with faster microprocessors to give you the most advanced HVAC drive we have ever built. The Q7 is designed to last. We utilize oversized transistors to increase the life of the drive and heavy-duty DC bus capacitors to absorb spikes and dips that may occur during operation. It is available with AC link reactor or DC link reactor along with 12 or 18 pulse options to mitigate harmonics on power systems. The Q7 is a quiet, dependable and user-friendly drive that is perfect for any HVAC system.

Q7 ASD Standard Specifications
Model Range  1 - 150HP  1 - 400HP
Voltage Rating  200 - 240V  380 - 480V
Input Voltage Tolerance  ± 10%  ± 10%
Control System  Sine Wave PWM (Pulse Width Modulated) System
Voltage Regulation  Programmed to output fixed voltage, floating voltage with input or set to maximum input voltage
Power Unit Interrupting Capacity  200,000A Interrupting Capacity
Integrated Enclosure Interrupting Capacity  100,000A Interrupting Capacity
PWM Carrier Frequency  Adjustable between 0.5 - 15kHz (ASD Specific, refer OM)
Transistor Type  Insulated Gate Bipolar Transistor (IGBT)
Overload Current Rating  100% continuous, 110% for one minute, 120% for 12 seconds and 150% for 2 seconds
Input Phase  Three-Phase Input. Single Phase input will require a derate
Control Power  Allows control power ride-through during momentary power loss
Volts / Hertz Settings  Variable Torque or Constant Torque
Output Frequency Range  0 - 299Hz
Power Terminals  Input (L1,L2,L3); Output (T1,T2,T3); DCL (PA,PB); DC Bus (PA,PC)
Discrete Input Terminals  Eight Input discrete inputs programmable to 69 functions.
Analog Inputs  One 4 - 20mA, one ±10V and two 0 - 10V
Discrete Output Contacts  Three discrete output contacts programmable to 66 functions
Analog Outputs  Two 4 - 20mA / 0 - 1mA outputs programmable to 33 functions
Signal Isolation  Optional Signal Isolation for 4 - 20mA input and the AM, FM outputs
Communication Ports  RS232, RS485, TTL ports standard
Communication Chip  NANOCOM chip
Set Point Control (PID)  Proportional Gain, Integral Gain, Differential Gain, Upper / Lower Deviation Limits, Feedback Source Delay Filter, 4 - 20mA Loss Selection
Damper Circuit  Available as a standard feature both in drive and bypass mode
Critical Frequencies  Three programmable jump frequencies with adjustable bandwidths
LCD Display  2 X 16 graphical display, 2 rows by 16 characters
LED Indications  Run (Red), Local (Green), Manual (Green)
Keypad Keys  NEMA 12 rated keypad to include: Speed Control, Run Mode, Setup / Program / Monitor, Read / Write, Run, Stop / Reset, Up and Down
Monitoring Functions  Thirty monitoring items to include: Input / Output Terminal Status, Forward / Reverse, Frequency Setting Value, Output Frequency, Output Current, Output Voltage, Input and Output Power, Four Past Faults, PID Feedback Value, DC Voltage, Input Signal Monitoring, ASD Overload and Motor Overload Ratio
Protective Functions  Fault Codes include: Overcurrent, Overvoltage, Heatsink Overheat, Load-side Short Circuit, Load Side Ground Fault, ASD Overload, EEPROM Error, ROM and RAM Error, Communication Error. Emergency Stop, Undervoltage, Open Output Phase, Motor Overload, Loss of Feedback, Undertorque
Retry  ASD can clear trip automatically upon trip up to ten times.
Restart  ASD will catch a freewheeling motor smoothly
Ambient Temperature  -10°C to 40°C, 14°F to 104°F; Humidity: 95% non-condensing
Installation  NEMA 1