Hitachi SJ7002 Series Instruction Manual page 132

3–48
"B" Group: Fine-Tuning Functions
External Brake
Control
Func. Name/
Code Description
B120 Brake Control Enable
B121 Brake Wait Time for Release
Sets time delay between arrival at release frequency and the brake release signal
B122 Brake Wait Time for Acceleration
Sets time delay from receipt of brake confirmation signal to start of motor acceleration
B123 Brake Wait Time for Stopping
Sets time delay from brake confirmation signal turns OFF to inverter deceleration to 0 Hz
B124 Brake Wait Time for Confirmation
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
Sets the frequency of the brake release output signal after delay set by B121
B126 Brake Release Current Setting
Sets the minimum inverter current level above which the brake release signal is permitted
B127 Braking Frequency
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
Function" on page 4–32 for more information.
Keypad
SRW OPE
00
OFF Disable
0 1
ON Enable
0.00 to 5.00 (seconds)
0.00 to 5.00 (seconds)
0.00 to 5.00 (seconds)
0.00 to 5.00 (seconds)
0.00 to 99.99, 100.0 to 400.0 (Hz)
0 to 1.80 x rated current
0.00 to 99.99, 100.0 to 400.0 (Hz)
Inverter
Range and Settings
[BRK] Brake release
[BOK] Brake confirmation
[BER] Brake error
"External Brake Control
Defaults
Run
Mode
FEF2 FUF2 FF2
Edit
FE2 FU2 F2
Lo Hi
(EU) (USA) (Jpn)
✘ ✔
00 00 00
✘ ✔
0.00 0.00 0.00
✘ ✔
0.00 0.00 0.00
✘ ✔
0.00 0.00 0.00
✘ ✔
0.00 0.00 0.00
✘ ✔
0.00 0.00 0.00
✘ ✔
Rated current for
inverter
✘ ✔
0.00 0.00 0.00
External Brake
System
Emergency Brake
(or alarm, etc.)