Hitachi SJ Series User Manual page 366

Chapter 12
12.17.4 Performing the Brake Control
Q
• How to perform the operation sequence using a
brake.
A
• Function to control the external brake used in a
lifting system, etc. by the inverter. Changing the
brake controlling function selection [AF130]
enables you to select between two types of control
methods.
1. Brake control 1: [AF130] = 01 or 02
Releases and checks the brake while outputting the
frequency.
2. Brake control 2: [AF130] = 03
Controls the brake in conjunction with the servo
lock control.
Brake Control 1
• Available in those instances where the operations
vary for lifting and lowering since different
operations can be set for forward and reverse
rotations.
• The 037[BRK] brake release signal for the output
terminal function and the 037[BOK] brake check
signal for the input terminal function are available.
• [AF130] = 01: For the brake control function, the
following parameters are valid.
Item
Brake release establishment
waiting time
Acceleration waiting time
Stop waiting time
Brake check waiting time
Brake release frequency
Brake release current
Brake apply frequency
Valid for both
forward and reverse
[AF131]
[AF132]
[AF133]
[AF134]
[AF135]
[AF136]
[AF137]
12-17-5
!
• For using the brake control function, we
recommend using controls that generate high
torque when the control system [AA121] is started
such as:
08: Sensorless vector control,
09: 0 Hz range sensorless vector control or
10: Vector control with sensor.
• When an error occurs in the brake sequence, the
inverter trips [E036], the brake control fault signal
038[BER] for the output terminal function is output.
• For the brake control, a trip occurs in the following
cases.
- After the brake release establishment waiting time, the
output current was less than the release current.
-
When the brake check signal 037[BOK] is used, [BOK]
was not turned on within the brake check waiting time
at start-up.
- When the brake check signal 037[BOK] is used, [BOK]
was not turned off within the brake check waiting time
at stop.
- When the brake check signal 037[BOK] is used, the
brake release signal 037[BRK] was being output, but
[BOK] was turned off.
• [AF130] = 02: For the brake control function
(forward/reverse), the following parameters are
valid.
Item
Brake release establishment
waiting time
Acceleration waiting time
Stop waiting time
Brake check waiting time
Brake release frequency
Brake release current
Brake apply frequency
Inverter Functions
Forward Reverse
rotation rotation
side side
[AF131] [AF138]
[AF132] [AF139]
[AF133] [AF140]
[AF134] [AF141]
[AF135] [AF142]
[AF136] [AF143]
[AF137] [AF144]