ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference - Manual (Page 109)

MF - Motor Failure
Purpose:
Reports the reason why the motor has been automatically shut down (set to MO=0).
MF normally reports zero (as default). The fact that the motor has been automatically
shut down is reflected as a bit in the status register (SR) report, and MF provides the
detailed information.
After a fault, the MF value remains fixed, even if the reason for the fault no longer
exists. MF is automatically set to zero on the next motor enable MO=1.
Fatal faults (CPU exceptions) are permanent and can be resent only by power reset.
The following table lists the type of faults reported by the MF value.
Reported Fault Value Bit
The motor is on, or the last motor shutdown was the normal
result of a software command. 0
Sensor problem:
The amplitude of the analog sensor is out of range (see
PF[18],PF[19]).
0x1 0
Encoder #2 error 0x2 1
Feedback loss: no match between encoder and Hall location.
Available in encoder + Hall feedback systems. 0x4 2
The peak current has been exceeded. Possible reasons are
drive malfunction or bad tuning of the current controller. 0x8 3
Inhibit. 0x10 4
Motion processor could not detect SimplIQ for Steppers
activity 0x20 5
Two digital Hall sensors were changed at the same time. Error
occurs because digital Hall sensors must be changed one at a
time. 0x40 6
Speed tracking error DV[2] - VX (for UM=2 or UM=4, 5)
exceeded speed error limit ER[2]. This may occur due to:
• Bad tuning of the speed controller.
• Too tight a speed error tolerance.
• Inability of motor to accelerate to the required
speed due to too low a line voltage or a motor
that is not powerful enough.
0x80 7
SimplIQ for Steppers Command Reference Manual Alphabetical Listing
MAN-STECR (Ver. 1.1)
101