YASKAWA Varispeed V7 Instruction Manual page 200

Input/Output Open-phase Detection
Constant Name
No.
n166 Input
Open-phase
Detection Level
n167 Input
Open-phase
Detection Time
n168 Output
Open-phase
Detection Level
n169 Output
Open-phase
Detection Time
* 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.
Unit Setting Range
1 %
0 to 100 %
400.0 V/100 %
(200 V Class)
800.0 V/100 %
(400 V Class)
1 s
0 to 255 s
1 %
0 to 100 %
Inveter's rated output cur-
rent/100 %
0.1 s
0.0 to 2.0 s
7. Programming Features
*1
*2
*1
*2
Factory
Setting
0 %
0 s
0 %
0.0 s
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