I/O Phase Loss Protection Selection - Mitsubishi Electric FR-E800 Series Instruction Manual
Compact, high functionality inverters
Hide thumbs
Also See for FR-E800 Series:
- Instruction manual (610 pages) ,
- Instruction manual (communication (226 pages) ,
- Instruction manual (function (534 pages)
Table of Contents
11.6
I/O phase loss protection selection
The output phase loss protection function, which stops the inverter output if one of the three phases (U, V, W) on the inverter's
output side (load side) is lost, can be disabled.
The input phase loss protective function on the inverter input side (R/L1, S/L2, T/L3) can be disabled.
Pr.
Name
251
Output phase loss
H200
protection selection
872
Input phase loss
*1
protection selection
H201
*1
Available for the three-phase power input model only.
Output phase loss protection selection (Pr.251)
• When Pr.251 is set to "0", output phase loss protection (E.LF) becomes invalid.
Input phase loss protection selection (Pr.872)
• When Pr.872 is set to "1", Input phase loss (E.ILF) protection is activated if one of three phases is detected to be lost for
1 second continuously.
NOTE
• When several motors are connected, output phase loss cannot be detected even if the wiring to one motor loses phase.
• In the case of R/L1, S/L2 phase loss, the input phase loss protection does not operate, and the inverter output is shut off.
• If an input phase loss continues for a long time, the lives of converter section and capacitor of the inverter become shorter.
• If the load is light or during a stop, lost phase cannot be detected because detection is performed based on the fluctuation of
bus voltage. Large unbalanced phase-to-phase voltage of the three-phase power supply may also cause input phase loss
protection (E.ILF).
• Phase loss cannot be detected during regeneration load operation.
Parameters referred to
Pr.261 Power failure stop
selectionpage 414
Initial value
Setting range
0
1
1
0
1
1
Description
Output phase loss protection disabled
Output phase loss protection enabled
Input phase loss protection disabled
Input phase loss protection enabled
11. (H) Protective Function Parameters
11.6 I/O phase loss protection selection
11
12
13
14
15
16
17
18
19
20
249
Hide quick links:
Chapters
Table of Contents
Troubleshooting
