- Mitsubishi Digital Electronics Welding System User Manual

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).