Q9 460V NEMA 1 Integrated Enclosure

PID Control
A built-in proportional/integral/derivative (PID) controller, used to regulate a process without
the need for external control devices, comes standard with the Q9. In addition, the wire-break
function trips the drive if the feedback signal drops below specified levels. This prevents the drive
from accelerating to maximum speed and helps protect the system.

Communications
The Q9 supports many common
protocols used in HVAC applications
including:
• BACnet (MS/TP)®
• LonWorks®
• Metasys N2®
• Modbus RTU®
• APOGEE FLN®

Alarms & Faults
The Q9 provides various alarms and fault-notifications that serve to alert the user when poor
operating conditions are present. This capability not only protects your drive but also protects the
motor that is connected to it.

Equipment Friendly
The Q9’s speed search function can detect the speed and direction of a spinning motor and start
smoothly without tripping. This drive feature proves especially useful when trying to start a motor
after a momentary power outage or in the case of a free-wheeling fan.
Adjustable acceleration/deceleration times and stall capabilities allow for minimal stress on fans,
pumps, belts, and pulleys.
The Q9 is capable of programming up to three different skip frequencies. User-selected frequencies
may be "skipped" to avoid the negative effects of mechanical resonance.

ASD Pro Software
Toshiba offers downloadable software that can be used to interface with the Q9 at no additional
cost. The software can be used to program and control the Q9, download parameter sets, and
monitor real-time conditions.

*PWM Carrier Frequency dependent.