Contactor Motor Select - Trane TR200 Operating Instructions Manual

Non-bypass Component Functions
Prior to Enabling Single Motor Operation
• Complete the start-up procedure to verify motor rotation direction is correct and that the system is ready
in all respects for continuous full speed operation in bypass.
Function
There are no special functions related to single motor option.
Dual Motor Option
General Information
The dual motor option is available for one drive running two motors at the same time or both motors running
in bypass. The motors may be of the same or different hp, but combined FLA of the motors must be equal to or
less than the maximum output current of the drive. (Note that the combined hp of the two motors is not appro-
priate for sizing the drive; use FLA.) Both motors respond to drive commands or run at full output speed in
bypass. Separate overloads are required since the drive does not monitor individual motor current but the total
current draw.
Prior to Enabling Dual Motor Operation
• Complete the start-up procedure to verify each motor rotation direction is correct and that the system
is ready in all respects for continuous full speed operation in bypass.
• When using dual motors, see the drive support materials for any special requirements for running dual
motors.
Function
For dual motor operation, a separate overload relay is connected to each motor overload. If either overload trips,
both motors stop.
Contactor Motor Select Option
General Information
The contactor motor select option is available for one drive alternating operation between two motors.
See Contactor Motor Select in this manual for details on this option.

Contactor Motor Select

General Information
Contactor motor select (CMS) is an option available for one drive alternating operation between two motors.
Contactors M4, M5, and switch SW2 are added in the option panel for this function. The motors must be of equal
hp and current rating and match the drive rating (as in single motor operation). Motor selection is made through
a panelmounted selector switch (SW2), remotely through control wiring input, serial communications, or the
drive's smart-logic controller. Status reporting is available to indicate which motor is in operation.
Prior to Enabling Contactor Motor Select
• Complete the start-up procedure to verify the motor rotation direction is correct for both motors and
that the system is ready in all respects for continuous operation.
Operation
• The panel mounted contactor motor select switch (SW2) has three positions: Motor 1/Auto/Motor 2. It
is operated by hand for manual operation. The motor 1 position selects motor 1, and the motor 2
position selects motor 2.
• When SW2 is in the auto position, either motor can be selected remotely. (Do not close both contacts
at once.)
56 TR200 Option Panel Operating Instructions