78 YASKAWA TM.iQp.07 iQpump Controller Programming Manual
■
Function: Freq Detect 1 (Setting: 4)
A “Freq Detect 1” output will be closed whenever the output frequency is equal to or below the value of the programmed Speed Agree
Level (L4-01). The Speed Agree Width (L4-02) is the hysteresis to the Freq Detect 1 function. Whenever the output frequency
approaches the Speed Agree Level while accelerating it will need to be equal to or exceed the Speed Agree Level (L4-01) plus the Speed
Agree Width (L4-02) before the Freq Detect 1 output will energize.
As the output frequency approaches the Speed Agree Level while decelerating, the Freq Detect 1 output will de-energize exactly at the
Speed Agree Level.
The Freq Detect 1 function is effective during both forward and reverse operation.
Figure 1.64
Figure 64. Freq Detect 1 Timing Diagram
■ Function: Freq Detect 2 (Setting: 5)
A Freq Detect 2 output will be closed whenever the output frequency is equal to or above the value of the programmed Speed Agree
Level (L4-01). The Speed Agree Width (L4-02) is the hysteresis to the Freq Detect 2 function. Whenever the output frequency
approaches the Speed Agree Level (L4-01) while accelerating it will de-energize exactly at the Speed Agree Level.
As the output frequency approaches the Speed Agree Level while decelerating, the Freq Detect 2 output will de-energize when the output
frequency is equal to or below the Speed Agree Level (L4-01) minus the Speed Agree Width (L4-02).
The Freq Detect 2 function is effective during both forward and reverse operation.
Figure 1.65
Figure 65. Freq Detect 2 Timing Diagram
■ Function: Inverter Ready (Setting: 6)
The Inverter Ready output will be closed whenever the iQpump drive is not in a fault state and not being programmed. If b1-08 = “1:
Enabled,” an iQpump drive that is in an active Run state that is also being programmed will have the Inverter Ready output closed.
■ Function: DC Bus Undervolt (Setting: 7)
The DC Bus Undervolt output will close whenever the main circuit DC Bus voltage or control circuit power supply drop below their
respective trip level. The undervoltage trip level is determined by parameter L2-05. An open soft charge contactor answer back signal will
also cause the DC Bus Undervolt output to close.
■ Function: BaseBlk 1 (Setting: 8)
A BaseBlk 1 programmed output will close to indicate that the iQpump drive is in baseblocked state. While in a baseblock state the
drive’s output transistors are prevented from firing. A BaseBlk 1 output contact can also serve as notice that the iQpump drive has a
charged DC Bus, no fault and can start at any time.
Frequency
Detection Signal
Output
Frequency
t
a
a - Detection Width (L4-02)
L4-01
Detection 1 Signal
ON (CLOSED)
OFF (OPEN)
a - Speed Agree Width (L4-02)
a
t
TIME
Frequency Detection Signal
Output Frequency
t
a - Detection Width (L4-02)
a
t
a - Speed Agree Width (L4-02)
Frequency Detection 2 Signal
a
OFF (OPEN)
ON (CLOSED)
TIME
(522 pages)
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