Code SV0421: Excessive semi-full error

Also shown as: SV0421 (15i), SV0421 (30i/31i/32i), SV0421 (0i-D) Action: 1: This alarm is issued when the move direction of the position detector is opposite to the move direction of the speed detector. Check the rotation direction of the separate detector. If the rotation direction of the separate detector is opposite to the rotation direction of the motor, take the following action: 3.TROUBLESHOOTING AND For a phase A/B detector: Reverse the connections of A and A. For a serial detector: Reverse the setting of the signal direction of the separate detector. In the Series 90B0/G(07) and subsequent editions, the following settings enable signal directions in the A/B phase detector to be inverted. #7 #6 #5 #4 #3 #2 #1 #0 No. 1960 (FS15i) RVRSE No. 2018 (FS16i) RVRSE (#0) Reverses the signal direction of the separate detector. 0: Does not reverse the signal direction of the separate detector. 1: Reverses the signal direction of the separate detector. If a large distortion exists between the motor and separate detector, this alarm may be issued in the case of abrupt acceleration/deceleration. In such a case, modify the detection level. #7 #6 #5 #4 #3 #2 #1 #0 No. 1741 (FS15i) RNLV No. 2201 (FS16i) RNLV (#1) Modifies the feedback mismatch alarm detection level. 1: Detected with 1000 min-1 or more 0: Detected with 600 min-1 or more 2: This alarm is issued when the difference between the motor position and separate detector position exceeds the excessive semi-full error level. Check if the conversion efficient for dual position feedback is set correctly. If the conversion efficient is set correctly, increase the alarm level. If this alarm is still issued after the level is modified, check the connection direction of the scale. No. 1971 (FS15i) Dual position feedback conversion coefficient (numerator) No. 2078 (FS16i) No. 1972 (FS15i) Dual position feedback conversion coefficient (denominator) No. 2079 (FS16i) Conversion coefficient = Number of feedback pulses per motor revolution (detection unit) 1,000,000 No. 1729 (FS15i) Dual position feedback semi-full error level No. 2118 (FS16i) [Setting] Detection unit. When 0 is set, no detection is made. 3: The current offset value of the current detector (equivalent to the current value in the emergency stop state) is abnormally high. If this alarm is still issued after the power is turned off then back on, the current detector is faulty. For the αi series, replace the amplifier. 3.TROUBLESHOOTING AND