Trane TR200 - Page 67

activated in the time set in par.2-02 DC Braking Time. Start will then take
place from 0 Hz.
[0] * Disabled
Select
Disable [0] if this function is not required
[1] Enabled
Select
Enable [1] to enable the adjustable frequency drive to “catch” and
control a spinning motor.
1-8* Stop Adjustments
Parameters for setting special stop features for the motor.
1-80 Function at Stop
Option: Function:
Select the adjustable frequency drive function after a stop command or
after the speed is ramped down to the settings in par.1-81
Min Speed for
Function at Stop [RPM].
[0] * Coast Leaves motor in free mode.
[1] DC Hold/Motor Preheat Energizes motor with a DC holding current (see par.2-00
DC Hold/Preheat
Current).
1-81 Min Speed for Function at Stop [RPM]
Range: Function:
Applica-
tion de-
pend-
ent*
[0 - 600 RPM] Set the speed at which to activate par.1-80
Function at Stop.
1-82 Min Speed for Function at Stop [Hz]
Range: Function:
Applica-
tion de-
pend-
ent*
[Application dependant]
Trip at Motor Speed Low Limit
In par.4-11 Motor Speed Low Limit [RPM] and par.4-12 Motor Speed Low Limit [Hz], it is possible to set a min-
imum speed for the motor in order to ensure proper oil distribution.
In some cases, e.g., if operating in current limit because of a defect in the compressor, the output motor speed
can be suppressed below Motor Speed Low Limit. To prevent damage to the compressor, it is possible to set
trip limit. If the motor speed drops below this limit, the adjustable frequency drive will trip and issue an alarm
(A49).
Reset will take place according to the selected function in par.14-20
Reset Mode.
If the trip must take place at a rather exact speed (RPM), it is recommended to set par.0-02
Motor Speed Unit
for RPM and use slip compensation, which can be set in par.1-62
Slip Compensation.
Parameter Description
4-30 TR200 Programming Guide