Function: external fault (setting: 20 through 2f), Function: pi integral reset (setting: 30) – Yaskawa iQpump Controller Programming Manual User Manual
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YASKAWA TM.iQp.07 iQpump Controller Programming Manual
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Function: External Fault (Setting: 20 through 2F)
External Fault functionality can be programmed into the digital inputs of the drive. The External Fault inputs can be used to signal to the
iQpump drive that other equipment related to the operation of the iQpump drive has experienced problems. If the External Fault is input
to the iQpump drive the digital operator will display as shown in the illustration below:
The x in EFx and Sx represent the terminal number of the digital input that the fault was received on.
To program an External Fault the value input into the H1-0x parameter will determined by:
• Contact type wired to the terminal (Normally Open or Normally Closed)
• Detection profile (Always Detected or Only Detected while Running)
• Drive operation after fault (Stopping Method or Continue Operation)
The following table shows the programming choices.
Table 24 Programming Choices
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Function: PI Integral Reset (Setting: 30)
By configuring one of the digital inputs as an Integral Reset Input, (H1-0x = 30), the value of the integral component of PI control can be
reset to zero whenever the configured input is CLOSED. The integral component of PI control will be held at zero as long as the
configured digital input is held CLOSED.
Resetting the Integral component of PI control can be useful in cases where an excessively large Integral value prevents the PI control
from responding quickly to changes in the system being regulated by the iQpump drive (e.g. duct pressure, water temperature).
Function: PI Integral Hold (Setting: 31)
By configuring a digital input as an Integral Hold input (H1-0x = 31), the value of the Integral component of the PI control can be forced
to clamp at the value it was at when the input is CLOSED. The Integral component of the PI control returns to accumulating error when
the digital input is OPEN again.
Holding the Integral Value can be useful during periods when the error can build up naturally, such as during long accelerations. Not
allowing Integral windup produces a more stable PI control.
Set Value
Input Contact Type
Detection Mode
Stopping Method
N.O. contact
N.C. contact
Always
Detected
Detected while
Running
Decel to stop
(major fault)
Coast to stop
(major fault)
Fast stop
(major fault)
Continue
operation
(minor fault)
20
X
X
X
21
X
X
X
22
X
X
X
23
X
X
X
24
X
X
X
25
X
X
X
26
X
X
X
27
X
X
X
28
X
X
X
29
X
X
X
2A
X
X
X
2B
X
X
X
2C
X
X
X
2D
X
X
X
2E
X
X
X
2F
X
X
X
Ext Fault Sx
-DRIVE-
Rdy
EFx