“B” Group: Fine-Tuning Functions
Configur
ing Dr
iv
e
P
a
ra
meters
3–48
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 4–32
for more information.
Func.
Code
Name/
Description
Keypad
Range and Settings
Defaults
Run
Mode
Edit
Lo Hi
SRW
OPE
FEF2
FE2
(EU)
FUF2
FU2
(USA)
FF2
F2
(Jpn)
B120
Brake Control Enable
OFF
00
Disable
00
00
00
✘ ✔
ON
0 1
Enable
B121
Brake Wait Time for Release
0.00 to 5.00 (seconds)
0.00
0.00
0.00
✘ ✔
Sets time delay between arrival at release frequency and the brake release signal
B122
Brake Wait Time for Acceleration
0.00 to 5.00 (seconds)
0.00
0.00
0.00
✘ ✔
Sets time delay from receipt of brake confirmation signal to start of motor acceleration
B123
Brake Wait Time for Stopping
0.00 to 5.00 (seconds)
0.00
0.00
0.00
✘ ✔
Sets time delay from brake confirmation signal turns OFF to inverter deceleration to 0 Hz
B124
Brake Wait Time for Confirmation
0.00 to 5.00 (seconds)
0.00
0.00
0.00
✘ ✔
Sets the wait time for confirmation after turn ON/OFF of brake release. If confirmation is not
received during the specified wait time, the inverter will trip with an external brake error.
B125
Brake Release Frequency Setting
0.00 to 99.99, 100.0 to 400.0 (Hz)
0.00
0.00
0.00
✘ ✔
Sets the frequency of the brake release output signal after delay set by B121
B126
Brake Release Current Setting
0 to 1.80 x rated current
Rated current for
inverter
✘ ✔
Sets the minimum inverter current level above which the brake release signal is permitted
B127
Braking Frequency
0.00 to 99.99, 100.0 to 400.0 (Hz)
0.00
0.00
0.00
✘ ✔
[BRK] Brake release
[BOK] Brake confirmation
Inverter
External Brake
System
Emergency Brake
(or alarm, etc.)
[BER] Brake error