Mounting The Bypass Box - Toshiba Q9 Plus Bypass ASD Installation & Operation Manual

• Use shielded wires or twisted wires for the control circuits.
• Ensure that the grounding terminals (G/E) of the ASD are securely connected to ground.
• Connect a surge suppressor to every electromagnetic contactor and relay installed near the ASD.
• Install noise filters as required.
Connecting the Q9 Plus Bypass ASD
L1, L2, and L3 are the three-phase input supply terminals for the Q9 Plus Bypass ASD/Q9 Plus
Bypass Box. An AC Reactor may be installed to provide filtering of the three-phase input power to the
Q9 Plus Bypass ASD/Q9 Plus Bypass Box.
T1, T2, and T3 are the output terminals of the ASD that connect to the motor. A DC Reactor may be
connected across terminals PA and PO to provide additional filtering. When not used, a jumper is
connected across these terminals (see
Filtering provides an increased line transient immunity and a lower harmonic current.
Connect the input and output power lines of the Q9 Plus Bypass ASD/Q9 Plus Bypass Box in
accordance with the type of system being used as shown in
Figure 10 on pg.
Connect the three-phase input power to the input terminals of the Q9 Plus Bypass ASD/Q9 Plus
Bypass Box at the L1, L2, and L3 terminals. Connect the output terminals T1, T2, and T3 of the Q9
Plus Bypass ASD/Q9 Plus Bypass Box to the motor. The input and output conductors and terminal lugs
used shall be in accordance with the requirements listed in
Note: In the event that the motor rotates in the wrong direction when powered up, reverse
any two of the three leads connected to the motor.
If conductors smaller than the recommended sizes are used in parallel for the input or output power,
each branch of the parallel set shall have its own conduit and not share its conduit with other parallel
sets (i.e., place T1A, T2A, and T3A in one conduit and T1B, T2B, and T3B in another conduit).
Note: National and local codes should be referenced when running more than three
conductors in the same conduit.
Install a molded case circuit breaker (MCCB) or fuse between the three-phase power source and the
ASD in accordance with the NEC Article 430-102 through 430-111 and the Fault Current setting of
the Q9 Plus Bypass ASD/Q9 Plus Bypass Box (see F631).

Mounting the Bypass Box

The Bypass Box of the BYP Series is provided as a separate item from the ASD — the two are shipped
from the factory neither mechanically nor electrically connected. The Q9 Plus ASD and the Bypass
Box are installed independently and then connected together.
Install the Bypass Box securely onto a vertical surface using the four mounting holes on the top and
bottom of the enclosure as shown in
The Q9 Plus ASD is then installed as described in the Q9 Plus ASD Installation and Operation
Manual (D/N 68249). The Q9 Plus ASD is attached to the Bypass Box using the two screws of the
Bypass Box wire chase resulting in the configuration shown in
The ambient operating temperature rating for the Bypass Box is from 14° to 104° F (-10° to 40° C).
DO NOT operate the system with the enclosure door open.
22
Figure 7 on pg.
34.
Table 5 on page
Q9 Plus Bypass ASD/Bypass Box Installation and Operation Manual
31).
Figure 8 on pg. 32,
Cable/Terminal Specifications on pg.
42.
Figure 5 on pg.
Figure 9 on pg. 33, or
43.
24.