YASKAWA iQpump Manual Supplement page 37

Feedback Loss Detection Special Conditions:
Auto Mode Operation and b5-12 is set to 2 (Fault):
• Running: The iQpump Controller will fault on feedback loss detection.
• Stopped: The iQpump Controller will display feedback loss alarm.
Hand Mode Operation and b5-12 is set to 2 (Fault):
• Running: The iQpump Controller will display feedback loss alarm.
• Stopped: The iQpump Controller will display feedback loss alarm.
Both the alarm or fault message display in any of these scenarios is: "A1-LOST Terminal A1 Lost."
Note: To convert terminal A1 to a 4-20 mA signal, connect a 250 ohm precision resistor (1/4 Watt or greater) between iQpump
Controller terminals A1 and AC. Then program H3-02 = 231.3% and H3-03 = -25.0 %.
YASKAWA TM.iQp.10 iQpump Technical Manual Supplement
11 Improved and Miscellaneous Functions
37