SM-Resolver User Guide 31
Issue Number: 4 www.controltechniques.com
7 Diagnostics
If the drive trips, the output is disabled so that the drive stops controlling the motor. The
lower display indicates that a trip has occurred and the upper display shows the trip.
Trips are listed alphabetically in Table 7.1 based on the trip indication shown on the
drive display. Refer to Figure 7-1.
If a display is not used, the drive LED Status indicator will flash if the drive has tripped.
Refer to Figure 7-2.
The trip indication can be read in Pr 10.20 providing a trip number.
7.1 Displaying the trip history
The drive retains a log of the last 10 trips that have occurred in Pr 10.20 to Pr 10.29 and
the corresponding time for each trip in Pr 10.43 to Pr 10.51. The time of the trip is
recorded from the powered-up clock (if Pr 6.28 = 0) or from the run time clock (if Pr 6.28
= 1).
Pr 10.20 is the most recent trip, or the current trip if the drive is in a trip condition (with
the time of the trip stored in Pr 10.43). Pr 10.29 is the oldest trip (with the time of the trip
stored in Pr 10.51). Each time a new trip occurs, all the parameters move down one,
such that the current trip (and time) is stored in Pr 10.20 (and Pr 10.43) and the oldest
trip (and time) is lost out of the bottom of the log.
If any parameter between Pr 10.20 and Pr 10.29 inclusive is read by serial
communications, then the trip number in Table 7-1 is the value transmitted.
Figure 7-1 Keypad status modes
Figure 7-2 Location of the status LED
Trip type (UU
= undervolts)
Drive status
= tripped
Trip StatusAlarm Status
Healthy Status
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