12.7 H: TERMINALS
696 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
■ 15: FWD/REV Det
Setting Function Description
15 FWD/REV Det
Sets the rotation direction of the motor when in Simple Closed Loop V/f Control method and F1-21, F1-37 = 0 [Encoder
Option Function Selection = A Pulse Detection], or when in Closed Loop V/f Control method.
ON : Reverse
Detects if the motor is rotating in the reverse direction.
OFF : Forward
Detects if the motor is rotating in the forward direction.
■ 16: Ref Sample
Setting Function Description
16 Ref Sample
Sets the command to sample the frequency reference at terminals AI1, AI2, or AI3 and hold the frequency reference at that
frequency.
When the terminal is active for 100 ms, this function reads a sample of the analog frequency reference and holds
that sample. When you input the sample/hold command again, the function again reads a sample of the analog
frequency reference and holds that sample. When you turn off the power, the drive erases the saved analog
frequency and resets the frequency reference to 0.
Figure 12.76 shows an example of how the function operates.
Figure 12.76 Reference Sample Hold
You cannot set the Reference Sample Hold function at the same time as these functions:
• H1-xx = 17 [Ac/Dec Hold]
• H1-xx = 62, 63 [Up Command, Down Command]
• H1-xx = 0E to 10 [ to Offset Frq 3]
• H1-xx = 65, 66 [Up2 Command, Dw2 Command]
If you set them at the same time, the drive will detect oPE03 [Multi-Function Input Setting Err].
■ 17: Ac/Dec Hold
Setting Function Description
17 Ac/Dec Hold
Momentarily pauses motor acceleration and deceleration when the terminal is turned ON, retains the output frequency that was
stored in the drive at the time of the pause, and restarts motor operation.
If the terminal is deactivated, the drive restarts acceleration and deceleration.
When the acceleration/deceleration ramp hold terminal is activated and d4-01 = 1 [FRef Hold Selection =
Enabled], the drive will store the output frequency in memory. While the acceleration/deceleration ramp hold
command is activated, the drive will always restart the motor at this output frequency.
Note:
Refer to “d4-01 FRef Hold Selection on page 616” for more information.
■ 18: Ac/Dec Time1
Setting Function Description
18 Ac/Dec Time1
Sets the drive to use C1-01, C1-02 [Accel Time 1, Decel Time 1] or C1-03, C1-04 [Accel Time 2, Decel Time 2].
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