Toshiba Q7 Installation And Operation Manual page 12

MS1 opens while the ASD is running. For the 230 volt ASD this feature is available on the 30 HP
system, on the 460 and 600-volt ASD's this feature is available on the 75 HP and above systems.
Figure 1. MS1 AUX Circuit Configuration.
The motor circuit protector (MCP) that is used on the L1, L2, and L3 input power lines has a Shunt
Trip feature (optional) which may be used to further enhance the system protection function of the Q7
ASD. The Shunt Trip feature may be connected such that the L1, L2, and L3 MCP may be opened by
a state change of another circuit. If another circuit is experiencing a problem which warrants a system
shutdown, the L1, L2, and L3 MCP will be opened by opening the Shunt Trip circuit. During normal
operation the Shunt Trip circuit is closed.
The Q7 ASD is shipped with jumpers connected to the following terminals:
ST to CC (coasts to stop if removed),
S4 to CC (Emergency Off trip if removed),
CIA to CIB (Test mode operation only), and
DRA to DRB (Disables the ASD mode and Bypass mode if open).
All four jumper connections are required for normal operation of the Q7 ASD while in the default
settings configuration (see the section titled
changing the default settings and section
jumper requirement information).
The ASD input voltage should remain within 10% of the specified input voltage range. Input voltages
approaching the upper or lower limit settings may require that the overvoltage and undervoltage stall
protection level parameters be adjusted. Voltages outside of the permissible tolerance should be
avoided.
The input power frequency should be ±2 Hz of the specified input frequency.
Do not use an ASD with a motor that has a higher power rating than the rated output of the ASD.
The ASD is designed to operate NEMA B motors. Consult with your sales representative before using
the ASD for special applications such as with an explosion-proof motor or applications with a piston
load.
Disconnect the ASD (or isolate via contactors) from the motor before megging or applying a bypass
voltage to the motor.
Interface problems may occur when the Q7 ASD is used in conjunction with some types of process
controllers. Signal isolation may be required to prevent controller and/or ASD malfunction. The Q7
ASD option, ASD-ISO-1, provides isolation of the Control Board output circuit from the AM/FM
output and from the II input (for further information on the ASD-ISO-1 option contact your Toshiba
sales representative or contact the manufacturer of the process controller for additional information on
controller compatibility and signal isolation).
Use caution when setting the output frequency. Over speeding a motor decreases its ability to deliver
torque and may result in damage to the motor and/or the driven equipment.
All Q7 ASDs are equipped with internal DC bus fuses. However, not all Q7 ASDs are equipped with
internal primary power input fuses (HP dependent). When connecting two or more drives that have no
internal fuse to the same power line as shown in
6
Default Setting Changes on pg. 32
Q7 Integrated Enclosure Theory of Operation on pg. 16
Figure 2 on pg. 7, it will be necessary to select a circuit-
Q7 ASD Installation and Operation Manual
for information on
for