Parameter
No.
Function name Data
Default da-
ta
Unit
d23
Speed Deviation Error Processing Se-
lection
0: Continue to run 1
2 -
1: Stop with alarm 1
2: Stop with alarm 2
3: Continue to run 2
4: Stop with alarm 3
5: Stop with alarm 4
d32 Speed Limit 1 in Forward 0 to 110 100 %
d33 Speed Limit 2 in Reverse 0 to 110 100 %
d35 Over Speed Detection Level
0 to 120,
999: Depend on d32 and
d33
999 %
E01 to E05,
E98, E99
Input Terminal [DI1] Function Selection
to Input T
erminal [DI7] Function Selec-
tion
71: DSAG (Speed agree-
ment)
76: DSE (Excessive
speed deviation)
- -
Overspeed error detection
If the output frequency exceeds the overspeed protection level, the inverter detects the overspeed
protection alarm OS and shuts off (trips) inverter output.
• Conditions that cause an overspeed protection alarm
Over Speed Detection Level (d35) = 999
<Forward rota-
tion side>
Overspeed detection level = 1st Maximum Output Frequency (F03)/2nd Maximum
Output Frequency (A01) × Speed Limit 1 in Forward (d32) (%) × 120 (%)
<Reverse rota-
tion side>
Overspeed detection level = 1st Maximum Output Frequency (F03)/2nd Maximum
Output Frequency (A01) × Speed Limit 2 in Reverse (d33) (%) × 120 (%)
Over Speed Detection Level (d35) = Other than 999
Overspeed detection level = 1st Maximum Output Frequency (F03)/2nd Maximum Output Fre-
quency (A01) × Over Speed Detection Level (d35) (%) × 120v(%)
Speed mismatch/excessive speed deviation
If the state where the dif
ference between the frequency reference and the actual frequency ex-
ceeds the set value of Speed Agreement / Speed Deviation Error Hysteresis Width (d21) continues
for Speed Agreement / Speed Deviation Error Detection Timer (d22), this state is judged to be a
speed mismatch/excessive speed deviation, post-detection processing is performed according to
the setting of Speed Deviation Error Processing Selection (d23).
6 Vector Control and Applied Functions
6-13
M1 Series Standard Type User's Manual (I669)
6-2 V/f control with speed feedback
6
6-2-2 Protective Detection under V/f Control with Speed Feedback