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“B” Group: Fine-Tuning Functions
Configuring Drive
Parameters
3–46
External Brake
Control
The brake control function in the inverter controls external braking used in systems such as
elevators. The purpose of this function is to ensure the inverter is powering the motor before
releasing external brakes that would permit the load to move or coast. This function requires the
configuration and wiring of intelligent input and output terminals. See “
External Brake Control
Function” on page 4–39 for more information.
“B” Function
Run
Mode
Edit
Lo Hi
Defaults
Units
SRW Display
Func.
Code
Name Description
–FE
(CE)
–FU
(UL)
–FR
(Jpn)
B120 Brake Control Enable Two option codes:
00 Disable
01 Enable
✘ ✔ 00 00 00 —
>b120 BRAKE
Mode OFF
B121 Brake Wait Time for
Release
Sets time delay between
arrival at release frequency
and the brake release signal.
Range is 0.00 to 5.00 sec.
✘ ✔ 0.00 0.00 0.00 sec.
>b121 BRAKE
STA-WAIT 0.00s
B122 Brake Wait Time for
Acceleration
Sets time delay after brake
confirmation signal is
received until the inverter
begins acceleration
Range is 0.00 to 5.00 sec.
✘ ✔ 0.00 0.00 0.00 sec.
>b122 BRAKE
ACC-WAIT 0.00s
B123 Brake Wait Time for
Stopping
Sets time delay after brake
confirmation signal turns
OFF until decelerating the
inverter to 0 Hz.
Range is 0.00 to 5.00 sec.
✘ ✔ 0.00 0.00 0.00 sec.
>b123 BRAKE
STP-WAIT 0.00s
B124 Brake Wait Time for
Confirmation
Sets the wait time for confir-
mation after turn ON/OFF of
brake release. If confirma-
tion is not received during
the specified wait time, the
inverter will trip with an
external brake error.
Range is 0.00 to 5.00 sec.
✘ ✔ 0.00 0.00 0.00 sec.
>b124 BRAKE
BRK-WAIT 0.00s
B125 Brake Release
Frequency Setting
Sets the frequency at which
the inverter will output the
brake release signal after
delay set by B121.
Range is 0.00 to 99.99 /
100.0 to 400.0Hz
✘ ✔ 0.00 0.00 0.00 Hz
>b125 BRAKE
OPEN-F 000.00Hz
B126 Brake Release Current
Setting
Sets the minimum inverter
current level above which
the brake release signal will
be permitted.
Range is 0% to 200% of
rated current
✘ ✔ Rated current for
each inverter model
A
>b126 BRAKE
OPEN-A 00.16.5A
[BRK] Brake release
[BOK] Brake confirmation
Inverter
External Brake
System
Emergency Brake
(or alarm, etc.)
[BER] Brake error