B090: Dynamic Braking Usage Ratio - Hitachi L300P Series Instruction Manual

"B" Function
Func.
Name
Code
B090 Dynamic braking usage
ratio
B091 Stop mode selection
B092 Cooling fan control
(see note below)
B095 Dynamic braking
control
B096 Dynamic braking
activation level
B098 Thermistor for thermal
protection control
B099 Thermal protection
level setting
Description
Selects the braking duty
cycle for the dynamic
braking resistor (total brake
% ON-time per 100 sec.
interval).
Range is 0.0 to 100.0%
0%Dynamic braking
disabled
>0% Enabled, per value
Selects how the inverter
normally stops the motor
(Run command or signal
goes OFF)
Two option codes:
00 DEC (decelerate and
stop)
01 FRS (free-run to stop)
Two option codes:
00 Fan always ON
01 Fan ON during RUN,
OFF during STOP
Three option codes:
00 Disable
01 Enable during RUN only
02 Enable always
Range is:
330 to 380V (200V class),
660 to 760V (400V class)
Three option codes:
00 Disable
01 Enable-PTC thermistor
02 Enable-NTC thermistor
Thermistor resistance
threshold at which trip
occurs.
Range is 0.0 to 9999 Ohms
B090: Dynamic braking usage ratio – This parameter limits the amount of time the inverter
can use the dynamic braking accessory device without entering the Trip Mode. Please refer to
"Dynamic Braking" on page 5–6
NOTE: When cooling fan control is enabled (B092=01) the inverter always turns the fan ON
for 5 minutes immediately after powerup. This will cool the inverter in case the inverter / motor
is still warm from prior running before a short power outage.
Defaults
Run
Mode
Edit
–FE2 –FU2 –FR
Lo Hi
(EU) (US) (JP)
✘ ✔
00 00 00
✘ ✘
00 00 00
✘ ✘
00 00 00
✘ ✔
00 00 00
✘ ✔
360/ 360/ 360/
720 720 720
✘ ✔
00 00 00
✘ ✔
3000 3000 3000
for more information on dynamic braking accessories.
3–41
L300P Inverter
SRW Display
Units
— >b090 BRD
%ED 000.0%
— >b091 RUN
STOP DEC
— >b092 INITIAL
FAN-CTL OFF
—
>b095 BRD
Mode OFF
V >b096 BRD
LEVEL 360Vdc
— >b098 THERM
SELECT OFF
Ohms >b099 THERM
LEVEL 3000ohm