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“A” Group: Standard Functions
Configuring Drive
Parameters
3–18
Derating of DC Braking – The inverter uses an internal carrier frequency (set by A059) to
generate a DC braking voltage (do not confuse with main inverter output carrier frequency set
by B083). The maximum DC braking force available to the inverter is more limited with higher
DC braking carrier frequency settings for A059 according to the graphs below.
“A” Function
Run
Mode
Edit
Lo Hi
Defaults
Units
SRW Display
Func.
Code
Name Description
–FE2
(CE)
–FU2
(UL)
–FR
(Jpn)
A051 DC braking enable Two options; select codes:
00 Disable
01 Enable
✘ ✔ 00 00 00 —
>A051 DCB
Mode OFF
A052 DC braking frequency
setting
The frequency at which DC
braking activates during
decel.
Range is 0.00 to 60.00 Hz
✘ ✔ 0.50 0.50 0.50 Hz
>A052 DCB
F 00.50Hz
A053 DC braking wait time The delay after reaching the
DC braking frequency, or
[DB] signal, before DC
braking begins.
Range is 0.0 to 5.0 seconds
✘ ✔ 0.0 0.0 0.0 sec.
>A053 DCB
WAIT 0.0s
A054 DC braking force during
deceleration
Variable DC braking force.
Range is from 0% to 70%
✘ ✔ 0. 0. 0. %
>A054 DCB
STP-V 000%
A055 DC braking time for
deceleration
Sets the duration for DC
braking during decel. Range
is 0.0 to 60.0 seconds
✘ ✔ 0.0 0.0 0.0 sec.
>A055 DCB
STP-T 00.0s
A056 DC braking / edge or
level detection for [DB]
input
Two options; select codes:
00 Edge detection
01 Level detection
✘ ✔ 01 01 01 —
>A056 DCB
KIND LEVEL
A057 DC braking force for
starting
Variable DC braking force.
Range is 0 to 70%
✘ ✔ 0. 0. 0. %
>A057 DCB
STA-V 000%
A058 DC braking time for
starting
Sets the duration for DC
braking before accel.
Range is 0.0 to 60.0 seconds
✘ ✔ 0.0 0.0 0.0 sec.
>A058 DCB
STA-T 00.0s
A059 DC braking carrier
frequency setting
Range is 0.5 to 12 kHZ for
models up to –750xxx,
range is 0.5 to 8kHz for
900xxx – 1320xxx models
✘ ✘ 3.0 3.0 3.0 kHz
>A059 DCB
CARRIER 05.0kHz
Maximum
braking ratio (%)
10
20
30
40
50
60
70
35791112
DC braking carrier frequency
10
20
30
40
50
60
70
3578
(10)
(22)
(34)
(46)
(58)
Maximum
braking ratio (%)
DC braking carrier frequency
(10)
(25)
(50)
Models 90 – 132kW
Models 11 – 75kW
kHz kHz