Group 21: Start/Stop - Daikin MD5 Operation Manual

Group 21: Start/Stop

This group defines how the motor starts and stops. The MD5 supports several start and stop modes.
Table 13: Group 21: Start/Stop
Code Description
2101 START FUNCTION
Selects the motor start method . The valid options depend on the value of parameter 9904 MOTOR CTRL MODE . Does not apply to Daikin MicroTech III
applications .
1 = AUTO – Selects the automatic start mode .
• Vector control modes: Optimal start in most cases . The drive automatically selects the correct output frequency to start a rotating motor .
• SCALAR:FREQ mode: Immediate start from zero frequency . Identical to selection 8 = RAMP .
2 = DC MAGN – Selects the DC Magnetizing start mode .
Note: The DC Magnetizing start mode cannot start a rotating motor .
Note: The drive starts when the set pre-magnetizing time (parameter 2103 DC MAGN TIME) has passed, even if motor magnetization is not complete .
• Vector control modes: Magnetizes the motor within the time determined by the parameter 2103 DC MAGN TIME using DC current . The normal control is
released exactly after the magnetizing time . This selection guarantees the highest possible break-away torque .
• SCALAR:FREQ mode: Magnetizes the motor within the time determined by the parameter 2103 DC MAGN TIME using DC current . The normal control is
released exactly after the magnetizing time .
3 = SCALAR FLYST – Selects the flying start mode.
• Vector control modes: Not applicable .
• SCALAR:FREQ mode: The drive automatically selects the correct output frequency to start a rotating motor – useful if the motor is already rotating and if
the drive will start smoothly at the current frequency .
• Cannot be used in multimotor systems .
4 = TORQ BOOST – Selects the automatic torque boost mode (SCALAR:FREQ mode only) .
• May be necessary in drives with high starting torque .
• Torque boost is only applied at start, ending when output frequency exceeds 20 Hz or when output frequency is equal to reference .
• In the beginning the motor magnetizes within the time determined by the parameter 2103 DC MAGN TIME using DC current .
• See parameter 2110 TORQ BOOST CURR . Does not apply to Daikin MicroTech III applications .
5 = FLY + BOOST – Selects both the flying start and the torque boost mode (SCALAR:FREQ mode only).
• Flying start routine is performed first and the motor is magnetized. If the speed is found to be zero, the torque boost is done.
8 = RAMP – Immediate start from zero frequency .
2102 STOP FUNCTION
Selects the motor stop method .
1 = COAST – Selects cutting off the motor power as the stop method . The motor coasts to stop .
2 = RAMP – Selects using a deceleration ramp .
• Deceleration ramp is defined by 2203 DECELER TIME 1 or 2206 DECELER TIME 2 (whichever is active).
2103 DC MAGN TIME
Defines the pre-magnetizing time for the DC Magnetizing start mode.
• Use parameter 2101 to select the start mode .
• After the start command, the drive pre-magnetizes the motor for the time defined here and then starts the motor.
• Set the pre-magnetizing time just long enough to allow full motor magnetization . Too long a time heats the motor excessively .
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P
Range Resolution Default
Vector control
modes: 1, 2, 8
3 (SCALAR
1
FLYST)
Scalar control
mode: 1...5, 8
1, 2 1 1 (COAST)
0 .00...10 .00 s 0 .01 s
OM 1191 • MD5 VFD
araMeTers
S

0 .30 s