Yaskawa iQpump Micro User Manual
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The drive starts the motor when the input S1 set for the Run command closes for longer than 2 ms. The drive stops the operation
when the Stop input S2 releases for 2 ms. When the digital input programmed for a forward/reverse operation is open, the
drive is set for forward operation. When the digital input is closed, the drive is set for reverse operation.
Note:
Input the Run and Stop commands via S1 and S2 when selecting a 3-Wire sequence.
S1
S2
S5
SN
Run Command (Runs when Closed)
DRIVE
Stop Switch
(N.C.)
Run Switch
(N.O.)
Stop Command (Stops when Open)
FWD/REV (Multi-Function Input)
(H1-05 = 0)
Standard Digital Input Common
Figure 4.31 3-Wire Sequence Wiring Diagram
2 ms min.
Run command
OFF (stopped)
Can be either ON or OFF
OFF (forward)
Motor speed
Forward/reverse
command
Stop command
Stop
Reverse
Stop
Foward
TIME
Forward
ON (reverse)
Figure 4.32 3-Wire Sequence
Note:
1. The Run command must be closed for more than 2 ms.
2. If the Run command is active at power up and b1-17 = 0 (Run command at power up not accepted), the Run LED will flash to indicate
that protective functions are operating. If required by the application, set b1-17 to 1 to automatically issue the Run command upon drive
power up.
WARNING! Sudden Movement Hazard. Ensure start/stop and safety circuits are wired properly and in the correct state before applying
power to the drive. Failure to comply could result in death or serious injury from moving equipment.
WARNING! Sudden Movement Hazard. The drive may start unexpectedly in reverse direction after power up if it is wired for 3-Wire sequence
but set up for 2-Wire sequence (default). Make sure b1-17 is set to “0” (drive does not accept a Run command active at power up). When
initializing the drive use 3-Wire initialization. Failure to comply could result in death or serious injury from moving equipment.
Setting 2: External Reference 1/2 Selection
Switches between two different sources of Run Commands and Frequency References. When multi-function digital input
selection 2 (Ext Ref Sel) is programmed, the Run Command and Frequency Reference source can be switched between External
Reference 1 (b1-01/b1-02) and External Reference 2 (b1-15/b1-16) if the drive is in AUTO mode.
Settings 3 to 5: Multi-Step Speed Reference 1 to 3
Switches multi-step speed frequency references d1-01 to d1-08 by digital inputs.
Setting 6: Jog Reference Selection
The Jog frequency set in parameter d1-17 becomes the frequency reference when the input terminal closes.
Setting 7: Accel/Decel Time Selection 1
Switches between accel/decel times 1 (C1-01 and C1-02) and 2 (C1-03 and C1-04).
Refer to C1-01 to C1-04: Accel, Decel
Settings 8 and 9: Baseblock Command (N.O., N.C.)
When the drive receives a baseblock command, the output transistors stop switching, the motor coasts to stop, and a bb alarm
flashes on the digital operator to indicate baseblock. When baseblock ends while a Run command is active, the drive performs
Speed Search to restart the motor.
4.8 Detailed iQpump Parameter Descriptions
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YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual