YASKAWA Varispeed V7 - Input;Output Open-phase Detection

7. Programming Features
199
 Input/Output Open-phase Detection
* 1. Not detected when set to 0 %.
* 2. Not detected when set to 0.0 s.
The recommended settings for input open-phase detection are
n166=7 % and n167=10 s.
(Open-phase cannot be detected correctly depending on the load status.)
The recommended settings for output open-phase detection are
n168=5 % and n169=0.2 s.
Constant
No.
Name Unit Setting Range Factory
Setting
n166 Input
Open-phase
Detection Level
1 %
0 to 100 %
*1
400.0 V/100 %
(200 V Class)
800.0 V/100 %
(400 V Class)
0 %
n167 Input
Open-phase
Detection Time
1 s
0 to 255 s
*2
0 s
n168 Output
Open-phase
Detection Level
1 %
0 to 100 %
*1
Inveter’s rated output cur-
rent/100 %
0 %
n169 Output
Open-phase
Detection Time
0.1 s
0.0 to 2.0 s
*2
0.0 s