YASKAWA GA700 Series Technical Manual page 810

12.8 H: Terminal Functions
You can use an external input to switch operation between two induction motors. The drive will save the control
methods, V/f patterns, and motor parameters for the two motors.
ON : Selects motor 2
OFF : Selects motor 1
When you select motor 2, the drive will switch to motor 2 parameters.
Parameter
C1-xx [Accel & Decel Time]
C3-xx [Slip Compensation]
C4-xx [Torque Compensation]
C5-xx [Automatic Speed Regulator
(ASR)]
E1-xx, E3-xx [V/f Patterns]
E2-xx, E4-xx [Motor Parameters]
F1-xx [Number of PG Pulses per
Revolution]
Note:
• When you use 2 motors, the drive applies the protective function set in L1-01 [Motor Overload (oL1) Protection] to motor 1 and motor
2.
• You cannot switch between motors 1 and 2 during run. If you try to switch motors when they are running, it will cause a rUn [Motor
Switch during Run] error.
• After you switch between encoder motors, you must wait 500 ms minimum to input a Run command. You must wait 200 ms minimum
for other control methods.
• If you set H1-xx = 16 [Motor 2 Selection] and set different control methods in maximum output frequency to motors 1 and 2, the drive
will apply the lower of the two maximum to the two motors. The upper limit of d1-xx [Frequency Reference] will change. For
example, the upper limit of d1-xx will be 400 when you set these parameters to these values:
–A1-02 = 2 [Control Method Selection = OLV]
–E1-04 = 590 [Maximum Output Frequency = 590 Hz]
–E3-01 = 3 [Motor 2 Control Mode Selection = CLV]
–E3-04 = 400 [Motor 2 Maximum Output Frequency = 400 Hz]
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17: Fast Stop (N.C.)
Setting Value Function
17 Fast Stop (N.C.)
If you cancel the fast stop input, the drive will not restart the motor until you meet these conditions:
• Fully stop the motor
• Cancel the Run command
• Cancel the fast stop command
Note:
• To use the N.O. switch to input the fast stop command, set 15 (Fast Stop (N.O.)).
• Refer to
C1-09: Fast Stop Time on page 695
• Set C1-09 [Fast Stop Time] to a correct deceleration time. If the deceleration time is too short, it can cause an overvoltage fault and
failure to stop the motor from coasting.
Figure 12.85 shows an example of how fast stop operates.
810
Table 12.62 Parameters that Switch between Motor 1 and Motor 2
OFF (Motor 1)
C1-01 to C1-04
C3-01 to C3-04
C4-01
C5-01 to C5-08, C5-12, C5-17, C5-18
E1-xx, E2-xx
F1-01 to F1-21
V/f CL-V/f OLV
Sets the command to ramp to stop in the deceleration time set in C1-09 [Fast Stop Time] when the input terminal is ON while
the drive is operating.
for more information.
Motor 2 Selection
Description
CLV AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA SIEPC71061705H GA700 Series Technical Manual
ON (Motor 2)
C1-05 to C1-08
C3-21 to C3-24
C4-07
C5-21 to C5-28, C5-32, C5-37, C5-38
E3-xx, E4-xx
F1-02 to F1-04, F1-08 to F1-11, F1-14, F1-31 to F1-37