Delta MH300 Series - Page 783

Chapter 14 Fault CodesMH300
14-56
ID No. Display Fault Name Description
51
External base block
(bb)
When the contact of MI=bb
is ON, the output stops
immediately and displays bb on the keypad.
The
motor is in free running.
Action and Reset
Action condition MI=bb and the MI terminal is ON.
Action time Immediately act
Fault treatment parameter N/A
Reset method The display “bb” is automatically cleared after the fault is cleared.
Reset condition N/A
Record No
Cause Corrective Actions
MI=bb activates
Verify if the system is back to normal condition
, and then press RESET
key to return to the default.