Stage 4 Function - Toshiba Q9 Installation And Operation Manual

resulting closure of K2 at stage 4 energizes the 2M contactor (jumper or open-damper signal at DRA/
B required) which allows the ASD output to be applied to the motor (see 2M at
BYP — Energizes K3 which turns off LED 2 (INV Mode) (if on), illuminates LED 3 (Bypass
Mode), opens K2 at stage 4 (which opens 2M if closed), and closes K3 at stage 4. The resulting
closure of K3 at stage 4 energizes the 3M contactor (jumper or open-damper signal at DRA/B
required) which allows the utility power to be applied directly to the motor bypassing the ASD (see
3M at
Note:
The Damper Response feedback circuit (DRA/DRB) may be used to prevent a motor from attempting
to force air flow through a duct that has a closed damper.
Damper motor power (120 VAC) is provided from an external source and is applied via the switched
DSA/DSB circuit
the INV mode or switched via the K3 contacts while operating in the Bypass mode.
Note:

Stage 4 Function

In the INV mode, the OUT1 closure (set to Damper Command) occurs upon receiving a Run command
and allows power to be applied to the damper motor. Once the damper-mounted DRA-to-DRB contacts
are closed (open damper required), K4 is energized.
LED 4 (System Interlock) illuminates and the K4 contacts close the S3-to-CC connection (JP1 jumper
required) completing the Damper Feedback circuit requirement for ASD operation. The DRA-to-DRB
closure also provides power to the 2M coil allowing for the ASD output to be applied to the motor.
If no discrete input terminal is assigned the function Damper Feedback, this permissive
in no longer a requirement for normal system operation.
With all other permissives configured to run, the motor will run without activating a
Damper Feedback discrete input terminal.
In the Bypass mode, switching SW2 to the Bypass operating mode energizes K3. The K3 contact
closure at PCB 11 applies power to the damper motor (Terminal Board [P/N 53750] jumpers JPDS1 and
JPDS2 are required). Once the damper-mounted DRA-to-DRB contacts are closed (open damper
required), the 3M coil is energized providing utility power to the motor, bypassing the ASD.
The DRA-to-DRB contacts are provided via a reversible damper-mounted switch. The switch
terminates power to the damper motor once the damper is fully opened or closed (reversible means that
only the opposite function is available once reaching the fully opened or closed position).
12
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Figure 7 on pg. 29).
Ensure that the phase relationship of the L1, L2, and L3 connections to the motor for
the Bypass mode of operation and for the ASD-driven operation are consistent. The
Reverse and Forward functions will be reversed if not properly connected (see
diagram in Figure 7 on pg.
(OUT1 contacts). The 120 VAC is switched via the OUT1 contacts while operating in
OUT1 contacts are labeled DSA and DSB on the terminal board.
29).
Q9 FlowSaver Installation and Operation Manual
Figure 7 on pg. 29).