YASKAWA iQpump Series Programming Manual page 30

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C1 Accel/Decel
Acceleration Times
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Parameter No.
C1-01 Acceleration Time 1
C1-02 Deceleration Time 1
C1-03 Acceleration Time 2
C1-04 Deceleration Time 2
C1-05 Acceleration Time 3
C1-06 Deceleration Time 3
Setting Range: 0.0 to 6000.0 sec
Factory Defaults: C1-01 and C1-02, 25.0 sec
C1-03 and C1-04, 10.0 sec
C1-05 and C1-06, 50.0 sec
C1-01 (Acceleration Time 1) sets the time to accelerate from zero to maximum speed (E1-04). C1-02 (Deceleration Time 1) sets the time
to decelerate from maximum speed to zero. C1-01 and C1-02 are the factory default active accel/decel "pair". Another accel/decel pair
(C1-03 and C1-04) exists that can be activated by a multi-function digital input (H1-0x = 7), or specified by a switch over frequency as
programmed in parameter C1-11.
C1-05 (Acceleration Time 3) and C1-06 (Deceleration Time 3) are used during the multiple pumping operation. Refer to P3-12 for
further description.
C1-09 Fast Stop Time
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Setting Range: 0.0 to 6000.0 sec
Factory Default: 10.0 sec
A special deceleration parameter is available for use with emergency or fault operations. Parameter C1-09 will set a special deceleration
that can be operated by closing a digital input configured as H1-0x = 15 or H1-0x = 17. A digital input configured as H1-0x = 15 will
look for a switch closure before initiating the Fast Stop operation. A digital input configured as H1-0x = 17 will look for the switch
opening before initiating the Fast Stop operation.
Unlike a standard deceleration time, once the Fast Stop operation is initiated even momentarily, the iQpump drive cannot be re-operated
until the deceleration is complete, the Fast Stop input is cleared, and the Run command is cycled.
The C1-05 (Acceleration Time 3) and C1-06 (Deceleration Time 3) are used during the multiplex pumping operation. Refer to P3-12 for
further description.
C1-11 Accel/Decel Switch Frequency
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Setting Range: 0.0 to 200.0 Hz
Factory Default: 0.0 Hz
The iQpump drive can be programmed to automatically switch between the two sets of Accel/Decel parameters on the fly. No digital
input is required. If parameter C1-11 is set to a frequency other than zero, the iQpump drive will use Acceleration 1 and Deceleration 1
whenever the output frequency is equal to or above the value of C1-11 and use Acceleration 2 and Deceleration 2 whenever the output
frequency is below the value of C1-11.
A multi-function input programmed as "Multi-Acc/Dec 1" will have priority over C1-11. For example, if the output frequency is greater
than the value of C1-11 but a digital input configured as "Multi-Acc/Dec 1" is closed then Acceleration 2 and Deceleration2 are active.
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Parameter Name
YASKAWA TM.iQp.02 iQpump Drive Programming Manual