Delta MH300 Series - Page 780

Chapter 14 Fault CodesMH300
14-53
ID No. Display Fault Name Description
48
ACI loss
(ACE)
Analog input loss (including all the 4–20
mA analog
signal)
Action and Reset
Action condition When the analog input is < 4 mA (only detects 4–20 mA analog input)
Action time Immediately act
Fault treatment parameter
Pr.03-19
0: Disable
1: Continue operation at the last frequency (warning, ANL displays
on the
keypad)
2: Decelerate to 0 Hz (warning, ANL displays on the keypad)
3: Stop immediately and display “ACE”
Reset method
Auto
When Pr.03-19=1 or 2, ACE is a “Warning”.
When analog input
signal is > 4 mA, the “Warning” is automatically cleared.
Manual When Pr.03-19=3, ACE is a “Fault”. You must reset manually.
Reset condition Immediately reset
Record When Pr.03-19=3, ACE is a “Fault”, and the fault is recorded.
Cause Corrective Actions
ACI cable is loose or cut off.
Tighten the terminal.
Replace the cable with a new one.
External device failure Replace the device with a new one.
Hardware failure
Check all the wiring. If the ACE fault still displays
on the keypad, return to
the factory for repair.