Invertek Drives elevator CORE Quick Start-Up Manual page 48

48 | P a g e
18. Other Commonly Used Functions
P3-04 Brake Resistor Resistance
P3-05 Brake Resistor Power
For software protection of the connected brake resistor, enter the rated power and resistance of the resistor into the above
Function
parameters. The drive will then monitor the brake resistor to ensure that it does not operate outside of its designed limits.
Populate the values of the brake resistor into P3-04 and P3-05
Adjustment Where an external thermal protection device is fitted, and software protection is not required. Setting the parameter to zero will
disable the software protection feature.
P10-08 Motor Connected Check
This function ensures that all 3 phases of the motor are connected prior to releasing the electro-mechanical brake, helps detect
breaks in the connection between the drive and the motor, for example a broken cable or a faulty contactor.
Function
The drive will trip "x" if the drive detects the motor is not connected, where x is the phase that is missing e.g. ""
Setting 0 means function is disabled.
Adjustment The correct value is one in which the audible noise level is acceptable, but the drive still detects a missing motor phase should it
not be connected.
P11-09 Output Phase Sequence
0 = U, V, W
Function
1 = U, W, V. Direction of motor rotation when operating in a forward direction will be reversed.
P6-02 Encoder Feedback Direction
Changes the direction of the incremental signals of the encoder feedback signal.
0 = A leads B when an Up command is given (Clockwise Direction)
Function
1 = B leads A when an Up command is given (Anti-Clockwise Direction)
P11-05 Effective Switching Frequency
IGBT Switching Frequency.
Function Higher switching frequencies reduce the audible 'ringing' noise from the motor, and improve the output current waveform, at the
expense of increased drive losses.
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