CHAPTER 7 MAINTENANCE AND INSPECTION

7.2.3 Alarm Display List

When an alarm is detected, the display on the amplifier will show an alarm code as per the following table.

Order of

description

display

Name

Type

1

oc1

Overcurrent 1

2

oc2

Overcurrent 2

3

oS

Overspeed

4

Hu

Overvoltage

5

Et1

Encoder Trouble 1

6

Et2

Encoder Trouble 2

7

ct

Circuit Trouble

8

dE

9

Fb

Memory Error

Fuse Blown

Major

10

cE

Motor Combination Error

11

tH

Breaking Transistor Overheat

7

12

Ec

Encoder Communication Error

13

ctE

CONT（Control signal）Error

14

oL1

Overload 1

15

oL2

Overload 2

16

rH4 Inrush Current Suppression Circuit Trouble

17

LuP

Main Power Undervoltage

18

rH1

Internal Breaking Resistor Overheat

19

rH2

External Breaking Resistor Overheat

20

rH3

Breaking Transistor Error

21

oF

Deviation Overflow

22

AH

23

EH

Amplifier Overheat

Encoder Overheat

Minor

24

dL1

Absolute Data Lost 1

25

DL2

Absolute Data Lost 2

26

DL3

Absolute Data Lost 3

27

AF

Multi-turn Data Over Flow

28

iE

Initial Error

To reset the alarm, perform one of the following methods.

 Turn the alarm reset (RST: sequence input signal) on temporarily and then turn it off.

 From the keypad, select the test operation mode [Fn05] and execute the alarm reset.

 On the alarm screen, press and hold the [] and [] keys of the keypad simultaneously for at least

one second.

 From the PC Loader, use the alarm reset in the "monitor" command.

 After the alarm reset, the data specified with parameter "PA2_77 (initial display of the keypad)" is

displayed.

7-4 Status Display