Hitachi WJ200-001S Instruction Manual page 528

Subtraction function of electronic thermal for motor
(1)
Electronic thermal protection selection parameter (b910) is prepared to be able to select from 3
patterns. When b090=0 is set, subtraction is invalid and identical to function before Ver.3.0.
w hen b910 = 01
①
when output current is less than thermal count level, subtracted constantly with fixed rate as
max value thermal counter (trip level) down to 0 in 10 minutes.
Output Current
Thermal Count
llevel
Thermal Counter
100[%]
(Trip Level)
Thermal Counter
Fig.1 Thermal Counter subtraction image when
b910=01
Output Current
Rate to subtract
100%/10min
10[min]
Ver.3− − − − 19
Trip