Yaskawa iQpump Manual Supplement - Manual (Page 36)

36 YASKAWA TM.iQp.10 iQpump Technical Manual Supplement
11 Improved and Miscellaneous Functions
11 Improved and Miscellaneous Functions
‹ Terminal A1 Loss Detection
Feedback loss detection alarm and fault messages are enhanced to differentiate between terminal A1 feedback loss and
Terminal A2 PI feedback loss.
Use parameter b5-12 is select feedback loss detection operation for terminal A1.
„ Parameters
b5-12 Feedback Loss Detection
New Alarm Message: Feedback Loss Terminal A1 (Modified)
New Fault Message: Feedback Loss Terminal A1 (Modified)
Multi-function Output Setting: Transducer Loss (Modified)
„ Function Description Feedback Loss Detection
Wire break (feedback loss detection) will be detected on Terminal A1 when all of the following conditions are satisfied:
• PI Feedback Loss Detection is enabled (b5-12 = 1 or 2).
• PI function is enabled (b5-01 > 0).
• Dual Zone PI or Water Level/Suction Pressure Control is enabled (b5-01 = 2 or P8-01 > 0, P1-01 = 0, b5-09 = 0, and
H3-09 = B).
• PI function is NOT disabled via Multi-Function Digital Input.
• Signal on Terminal A1 falls below -6.25 % or rises above 106.25 % for more than 1 second.
Note: Wire-break detection on Terminal A1 is checked after the gain/bias parameters (H3-02 and H3-03) are applied.
Setting Description
0 Disabled
1 Alarm
2 Fault (factory default)
Fault Display Description
A1-LOST
Terminal A1 Lost Shown when b5-12 = 1 and feedback signal on terminal A1 is lost. Check to ensure the device connected to
Terminal A1 is installed and working properly.
Fault Display Description
A1-LOST
Terminal A1 Lost
Shown when b5-12 = 2 and feedback signal on terminal A1 is lost. Check to ensure the device connected to
Terminal A1 is installed and working properly.
Setting Description
4A
Transducer Loss
Closed: During a "Feedback Loss" alarm.
Closed: During a "FBL - Feedback Loss" fault".
Closed: During an "A1-LOST Terminal A1 Lost" alarm (New)
Closed: During an "A1-LOST Terminal A1 Lost" fault (New)