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Chapter 8 PROTECTION FUNCTION
8.1 Action selection in case of option error
To ignore or make inverter trip can be selected in case of option error.
Item Function code Data Contents
00 TRP: Inverter trips and outputs alarm signal.
Action selection in
case of option error
P001 / P002
01
RUN: Inverter ignores the option error and continues
the operation.
(Note) : Inverter trips anyway in case of encoder line break error (E60, E70), SJ-FB abnormal
connection (E69,E79) occurs, although action selection is set to 01 (RUN). Please refer to
"Chapter 5.2 FEED-BACK BOARD INITIAL SETTINGS".
8.2 Cause and countermeasure of the option error
When any of the following alarms occurs, the inverter displays the alarm cause and stops.
Display Item Contents Processing
Detect the line break or disconnection of the
encoder line.
Check the encoder signal line and
connection.
Detect when there is an encoder failure.
Detect when the specification of the encoder is
not line driver output type.
Replace it to a suitable one.
E60
(E70)
(Note 1)
Encoder line
break
Detect when there is no Z pulse.
Turn SWENC-2 OFF on the option
board.
E61
(E71)
(Note 1)
Over speed
Detect when the motor rotation speed exceeds
(maximum frequency (note 2))×(over speed
error detection level (P026).
(Note 3),(Note 4)
Adjust the Kp and J constants related
to the speed control system to reduce
overshoot.
E62
(E72)
(Note 1)
Positioning
error
Detect when the deviation of the current
position and command value becomes more than
1,000,000 pulses during position controlling.
Increase the position loop gain.
Decrease the numbers of the pulse
train input per second.
E69
(E79)
(Note 1)
connection
error
Detect abnormal connection between the
inverter main body and SJ-FB.
Check the connection between the
inverter main body and SJ-FB.
(Note 1): ( ) shows when the option card is connected to option slot 2.
(Note 2): Frequency upper limit value (A061/A261) is reflected when it is set.
(Note 3): It depends on what type of main body combines with the SJ-FB, the setting value
conversion is different.
Please refer to the (Note 3) of the “5.3 Items regarding the feed back board of the inverter
main body“.
(Note 4): When the over speed error occurred . There is a possibility the over speed error occur
again. Even though the trip is cleared during the motor free run. In this case stop the motor,
then clear the trip please.
8.3 Warning display (Feed back option relation)
(Refer to the operation manual of the main body about the warning other than the following,)
The 009 is displayed in the case that it became orientation speed setting (P015) > the highest
frequency setting (A004). Please confirm the case, orientation speed setting (P015) and highest
frequency setting (A004).