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20 to 2F: External Fault

Setting Value

Function

Description

20 to 2F

External Fault

Sets a command to stop the drive when a failure or fault occurs on an external device.

If an external fault is input to the drive, the keypad will show EFx [External Fault (Terminal Sx)], where x is the number of the terminal (terminal Sx) to which the external fault signal is assigned. For example, when an external fault signal is input to terminal S3, the keypad will show EF3 [External Fault (Terminal S3)].

Use these conditions to select the value to set in H1-xx:

  • Signal input method from peripheral devices

  • External fault detection method

  • Motor stopping method (operation after external fault detection)

Table 1 shows the relation between the conditions and the value set to H1-xx.

Table 1. Stopping Methods for External Fault

Setting

Signal Input Method from Peripheral Devices 1

External Fault Detection Method 2

Stopping Method

N.O.

N.C.

Always Detected

Detected during RUN Only

Ramp to Stop (Fault)

Coast to Stop (Fault)

Fast Stop (Fault)

Continuous Operation (Alarm Only)

20

x

-

x

-

x

-

-

-

21

-

x

x

-

x

-

-

-

22

x

-

-

x

x

-

-

-

23

-

x

-

x

x

-

-

-

24

x

-

x

-

-

x

-

-

25

-

x

x

-

-

x

-

-

26

x

-

-

x

-

x

-

-

27

-

x

-

x

-

x

-

-

28

x

-

x

-

-

-

x

-

29

-

x

x

-

-

-

x

-

2A

x

-

-

x

-

-

x

-

2B

-

x

-

x

-

-

x

-

2C

x

-

x

-

-

-

-

x

2D

-

x

x

-

-

-

-

x

2E

x

-

-

x

-

-

-

x

2F

-

x

-

x

-

-

-

x
 
1

Set the terminal to N.O. (detects external fault when switched ON) or N.C. (detects external fault when switched OFF).

2

Set the drive to always detect each fault or to detect only during run.