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3 alarm code output, 4 resetting the inverter, Protective functions – MITSUBISHI ELECTRIC FR-A500L User Manual

Page 40

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PROTECTIVE FUNCTIONS

29

5.1.3 Alarm code output

By setting Pr. 76 "alarm code output selection", an alarm definition can be output as a 4-bit digital signal. This
signal is output from the open collector output terminals equipped as standard on the inverter.
Correlations between alarm definitions and alarm codes are as follows.

Output Terminal Signal On-Off

Operation Panel

Display

FR-DU04

SU

IPF

OL

FU

Alarm Code

Alarm Output (across B-C)

E.OC1

0

0

0

1

1

E.OC2

0

0

1

0

2

E.OC3

0

0

1

1

3

Provided (Open)

E.OV1
E.OV2
E.OV3

0

1

0

0

4

Provided (Open)

E.THM

0

1

0

1

5

E.THT

0

1

1

0

6

Provided (Open)

E.IPF

0

1

1

1

7

Provided (Open)

E.UVT

1

0

0

0

8

Provided (Open)

E.FIN

1

0

0

1

9

Provided (Open)

E. 15

1

0

1

0

A

Provided (Open)

E. GF

1

0

1

1

B

Provided (Open)

E.OHT

1

1

0

0

C

Provided (Open)

E.OLT

1

1

0

1

D

Not provided (Provided when OLT
is displayed) (Open)

E.OPT

1

1

1

0

E

Provided (Open)

E.OP1 to E.OP3

1

1

1

0

E

Provided (Open)

E. PE

Provided (Open)

E.PUE

Provided (Open)

E.RET

Provided (Open)

E.LF

Provided (Open)

E.CPU

Provided (Open)

E.14

1

1

1

1

F

Provided (Open)

(Note) 0: Output transistor OFF, 1: Output transistor ON (common terminal SE)

The alarm output assumes that Pr. 195 setting is "99" (factory setting).

5.1.4 Resetting the inverter

The inverter can be reset by performing any of the following operations. Note that the electronic overcurrent
protection's internal heat calculation value and the number of retries are cleared (erased) by resetting the
inverter.

Operation 1: Using the operation panel (FR-DU04), press the [RESET] key to reset the inverter.
Operation 2: Switch power off once, then switch it on again.
Operation 3: Switch on the reset signal (RES).