Omron Q2A Series Technical Manual page 601

When the frequency reference or PID output value is 0% to 50%, the drive reverses the motor in the set direction.
When the frequency reference or PID output value is 50% to 100%, the drive operates the motor in the set
direction.
Note:
When you use the Bi-Directional function with PID control, you can use an MFDI terminal set for PID BiDir [H1-xx = 7A] to enable/
disable the Bi-Directional function.
Table 12.24 shows how the drive operates when you use the PID control function with the Bi-Directional function
and d4-11 = 1:
b5-01 [PID Enable] Setting
b5-01 = 0 [Disabled]
b5-01 ≠ 0 [Enabled]
• When PID Control is Disabled or H1-xx = 6A [DI Function Select = PID Disable] is Activated
When the frequency reference is 0% to 50%, the drive reverses the motor in the set direction. When the
frequency reference is 50% to 100%, the drive operates the motor in the set direction.
frequency reference change at this time. This is an example of operation when the Forward Run command is
input.
Figure 12.62 Frequency Reference Transition when PID Control is Disabled or PID Disable is ON
Note:
When b1-04 = 1 [Reverse Operation Selection = Disabled], the drive will not run in Reverse. The frequency reference limit is 0 Hz.
• When PID Control is Enabled and H1-xx = 7A [PID BiDir] is Activated
The Bi-Directional function is enabled. When the frequency reference is 0% to 50% after PID control execution,
the drive runs the motor opposite of the set direction. When the frequency reference is 50% to 100%, the drive
runs the motor in the set direction.
example of the operation when the Forward Run command is input.
Figure 12.63 Frequency Reference Transition when PID Control and PID Bi-Directional are Enabled
Note:
When b1-04 = 1, the drive will not run the motor in Reverse. The frequency reference limit is 0 Hz.
• When PID Control is Enabled and H1-xx = 7A is Deactivated
The Bi-Directional function is disabled. When the frequency reference is a negative value after PID control
execution, the drive runs the motor opposite of the set direction. The frequency reference value is an absolute
value.
■
d4-12 Stop Position Gain
No.
Name
(Hex.)
d4-12 Stop Position Gain
(02B8)
If the motor stops before the necessary stop position, increase the setting value. If the length of time for the motor
to stop is too long, decrease the setting value.
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Table 12.24 Bi-Directional Function Operation Conditions
Status of MFDI Terminal Set for 7F [PID Bi-Directional Enable]
Bi-Directional function enabled
Bi-Directional function enabled
Figure 12.63 shows the frequency reference change at this time. This is an
V/f CL-V/f OLV CLV
Sets the gain to adjust the stopping accuracy. Set this parameter when b1-03 = 9 [Stopping
Method Selection = Distance Stop].
ON
Bi-Directional function enabled
Normal operation (Bi-Directional function disables)
Description
AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
12.4 d: REFERENCE
OFF
Figure 12.62 shows the
Default
(Range)
1.00
(0.50 - 2.55)
601
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