11.8 H: Terminal Functions
932 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Set MFDI H1-xx = 7E [Reverse Rotation Identifier]. When the configured terminal is activated, the motor
operates in Reverse run. When the terminal is deactivated, the motor operates in Forward run.
Use an encoder that outputs 2-tracks (phase A, B) to detect the direction of motor rotation.
• Use the frequency reference
When the you do not use the MFDI, the Forward/Reverse run command is the same as the direction of motor
rotation.
Figure 11.118 shows speed control in Simple Closed Loop V/f Mode.
Figure 11.118 Simple Closed Loop Speed Control Block Diagram
Enable Simple Closed Loop V/f Mode
1. Connect the encoder output pulse wiring to terminal RP.
2. Set A1-02 = 0 [Control Method Selection = V/f Control].
3. Set H6-01 = 3.
4. Set H6-02 [Terminal RP Frequency Scaling] to the speed feedback (pulse train input signal) frequency at the
time when the frequency reference is 100%.
Make sure that H6-04 [Terminal RP Function Bias] = 0% and H6-03 [Terminal RP Function Gain] = 100%.
5. Select the detection method for the direction of motor rotation.
When you use an MFDI, set H1-xx = 7E.
6. Set C5 parameters related to ASR gain and integral time to adjust responsiveness.
Note:
• Set A1-02 = 0 and H6-01 = 3 to show C5 parameters.
• You cannot use Closed Loop V/f Control mode with the Motor Switch function.
■ H6-02: Terminal RP Frequency Scaling
No.
(Hex.)
Name Description
Default
(Range)
H6-02
(042D)
RUN
Terminal RP
Frequency Scaling
Sets the frequency of the pulse train input signal used when the function set
with H6-01 [Terminal RP Pulse Train Function] is 100%.
1440 Hz
(100 - 32000 Hz)
■ H6-03: Terminal RP Function Gain
No.
(Hex.)
Name Description
Default
(Range)
H6-03
(042E)
RUN
Terminal RP
Function Gain
Sets the gain used when the function in H6-01 [Terminal RP Pulse Train
Function] is input to terminal RP.
100.0%
(0.0 - 1000.0%)
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