Yaskawa iQpump Controller Programming Manual - Manual (Page 38)

38 YASKAWA TM.iQp.07 iQpump Controller Programming Manual
• PI is enabled (b5-01 > 0)
• Dual Zone PI is enabled (b5-01 = 2, P1-01 = 0, b5-09 = 0, and H3-09 = B)
• PI is NOT disabled via Multi-Function Digital Input
• Signal on Terminal A1 goes below -6.25% or above 106.25% for more than 1 s.
Note: Wire break detection on Terminal A1 occurs after the gain / bias parameters (h3-02 and H3-03) are applied.
Feedback Loss (wire-break):
The drive will then react depending on how parameter b5-12 is programmed. However, if b5-12 is set to “fault” (b5-12 = 2), the drive will
only fault when running in “Auto” mode. A warning will only be displayed if the drive is not running, or is running in “Hand” mode.
Feedback Loss (standard):
The drive will then react depending on how parameter b5-12 is programmed. However, if b5-12 is set to “fault” (b5-12 = 2), the drive will
only fault when running in “Auto” mode. A warning will only be displayed if the drive is running in “Hand” mode.
Note: To convert terminal A1 to a 4 ~ 20 mA signal, connect a 250 Ohm precision resistor (1/4 W or greater) between A1 and
AC. Then program H3-02 = 231.2% and H3-03 = 25.0%.
Table 11 Related Parameters
Table 12 Related Fault
Table 13 Multi-Function Output Setting
◆ b5-13 PI Feedback Loss Detection Level
Setting Range: 0 ~ 100%
Factory Default: 0%
Refer to parameter b5-13 in appendix A for description details.
◆ b5-14 PI Feedback Loss Detection Time
Setting Range: 0.0 ~ 25.0 s
Factory Default: 2.0 s
The iQpump drive interprets feedback loss whenever the feedback signal drops below the value of b5-13 and stays below that level for at
least the time set into b5-14. See
Figure 1.30 for timing details.
Parameter
No.
Addr.
Hex
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location
b5-12 1B0
PI Feedback Reference Missing
Detection Selection
Fb los Det Sel 0: Disabled
1: Alarm
2: Fault
0 ~ 2 2 Programming
b5-13 1B1
PI Feedback Loss Detection
Level
Fb los Det Lvl
Sets the PI feedback lost detection level as a percentage of maximum
frequency (E1-04).
0 ~ 100% 0% Programming
b5-14 1B2
PI Feedback Loss Detection
Time
Fb los Det Time
Sets the PI feedback loss detection delay time in terms of seconds.
0.0 ~
25.5 s
2.0 s Programming
Fault Display Description Cause Countermeasure
FBL Feedback
Loss
PI Feedback Loss PI Feedback source is not installed correctly or is not working.
Check to insure the PI Feedback source is installed and working
properly.
Setting Description
4A
Transducer Loss
Closed: During a “Feedback Loss Alarm”
Closed: During a “FBL - Feedback Loss Fault”