Hitachi L100 - Page 125

Component Descriptions
Motor Control
Accessories
5–6
The following table specifies the braking options for 400V class L100 inverters and the
braking torque for each option. Use BRD–EZ2 braking unit for 400V class inverters.
Note 1:
A = Average braking torque from 60 Hz to 3 Hz.
Note 2:
B = Average braking torque from 120 Hz to 3 Hz.
Note 3:
BRD maximum duty cycle = 10%, where T
b
/T
c
≤
0.1 sec.
Note 4:
BRD maximum continuous On time T
b
≤
10 sec.
L100 Inverter 400V Models BRD–EZ2 Braking Unit
Model Number HP
Braking torque
without
braking unit
Using built-in
resistor only
External resistor added
HRB1 HRB2 HRB3
A B A B A B A B
004HFE/HFU 1/2 50% 150% 120% Over-range Over-range Over-range
007HFE/HFU 1 50% 100% 80% 150% 120% Over-range Over-range
015HFE/HFU 2 50% 60% 60% 100% 80% 150% 120% Over-range
022HFE/HFU 3 20% 50% 50% 100% 80% 150% 120% Over-range
030/040HFE/HFU 5 20% 40% 40% 60% 60% 120% 100% 150% 120%
055HFE/HFU 7.5 20% 30% 30% 50% 50% 80% 60% 100% 80%
075HFE/HFU 10 20% ——40% 40% 60% 60% 80% 80%
f
time
T
b
T
c
output