
1. DISPLAY AND OPERATION OF CRT/MDI
B–62755EN/01
56
#7
OVL0200
#6
LV
#5
OVC
#4
HCA
#3
HVA
#2
DCA
#1
FBA
#0
OFA
DGN
#7(OVL): Overload alarm
#6(LV): Insufficient voltage alarm
#5(OVC): Over current alarm
#4(HCA): Abnormal current alarm
#3(HVA): Overvoltage alarm
#2(DCA): Discharge alarm
#1(FBA): Disconnection alarm
#0(OFA): Overflow alarm
#7
ALD0201
#6 #5 #4
EXP
#3 #2 #1 #0
DGN
Overload
0 – – – Motor overheat
alarm
1 – – – Amplifier overheat
Disconnec-
1 – – 0 Built–in pulse coder (hand)
tion alarm
1 – – 1 Disconnection of separated type pulse
coder (hard)
0 – – 0 Disconnection of pulse coder (software)
#7
RAM0204
#6
OFS
#5
MCC
#4
LDA
#3
PMS
#2 #1 #0
DGN
#6(OFS): Abnormal current value result of A/D conversion of digital
#5(MCC): Contacts of MCC of servo amplifier is melted.
#4(LDA): Serial pulse coder LED is abnormal
#3(PMS): Feedback is not correct due to faulty serial pulse coder C or feedback
cable.
This data indicates the cause of servo alarm No. 417, detected by the NC.
If the alarm is detected by the servo, the PRM bit (bit 4 of DGN No. 0203)
is set to 1.
#7
0280
#6
AXS
#5 #4
DIR
#3
PLS
#2
PLC
#1 #0
MOT
#0 (MOT): The motor type specified in parameter No. 2020 falls outside the
predetermined range.
#2 (PLC): The number of velocity feedback pulses per motor revolution, specified in
parameter No. 2023, is zero or less. The value is invalid.
#3 (PLS): The number of position feedback pulses per motor revolution, specified in
parameter No. 2024, is zero or less. The value is invalid.
#4 (DIR): The wrong direction of rotation for the motor is specified in parameter No.
2022 (the value is other than 111 or –111).
#6 (AXS): In parameter No. 1023 (servo axis number), a value that falls outside the
range of 1 to the number of controlled axes is specified. (For example, 4 is
specified instead of 3.) Alternatively, the values specified in the
parameter are not consecutive.
D Details of digital servo
alarm 414
D Detail of digital servo
alarm 417