Mitsubishi Electric FR-D720-0.2K-G, Инструкция по эксплуатации

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263
5
TROUBLES
HOOTING
Causes and corrective actions
Operation panel
indication
E.OS FR-PU07 E.OS
Name
Overspeed occurrence
Description Trips the drive unit if the motor speed exceeds Pr. 374 Overspeed detection level .
Check point Check that
Pr. 374 Overspeed detection level
is appropriate.
Corrective
action
Set Pr. 374 Overspeed detection level appropriately.
Operation panel
indication
E.PID FR-PU07 PID Signal Error
Name PID signal fault
Description
If any of upper limit (FUP), lower limit (FDN), and deviation limit (Y48) turns ON during PID control, drive unit shuts off
the output. This function is active under the following parameter settings:
Pr. 554 PID signal operation selection

"0,10",
Pr. 131 PID upper limit

"9999", Pr. 132 PID lower limit

"9999", and Pr. 553 PID deviation limit

"9999". This protective
function is not active in the initial setting ( Pr. 554 = "0", Pr. 131 = "9999", Pr. 132 = "9999", Pr. 553 = "9999").
Check point
 Check if the measured PID value is greater than the upper limit (Pr. 131) or smaller than the lower limit (Pr. 132) .
 Check if the absolute PID deviation value is greater than the limit value (Pr. 553) .
Corrective
action
Make correct settings for Pr. 131 PID upper limit , Pr. 132 PID lower limit , Pr. 553 PID deviation limit . (Refer to page 216.)
Operation panel
indication
E.SAF FR-PU07
Fault
E.SAF
Name E.SAF
Description
 Appears when internal circuits are malfunctioning.
 Appears when one of the lines between S1 and SC, or between S2 and SC is opened.
Check point
Check if the shorting wire across the terminals S1 and SC or the terminals S2 and SC is disconnected.
Corrective action
Short across the terminals S1 and SC and the terminals S2 and SC with shortening wires.
NOTE
 If faults other than the above appear, contact your sales representative.