Hitachi SJ Series, User Manual

Page: 366 / 786

12-17-5
Chapter 12 Inverter Functions
12.17.4 Performing the Brake Control
• How to perform the operation sequence using a
brake.
• 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.
• 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 Valid for both
forward and reverse
Brake release establishment
waiting time [AF131]
Acceleration waiting time [AF132]
Stop waiting time [AF133]
Brake check waiting time [AF134]
Brake release frequency [AF135]
Brake release current [AF136]
Brake apply frequency [AF137]
Item
Forward
rotation
side
Reverse
rotation
side
Brake release establishment
waiting time [AF131] [AF138]
Acceleration waiting time [AF132] [AF139]
Stop waiting time [AF133] [AF140]
Brake check waiting time [AF134] [AF141]
Brake release frequency [AF135] [AF142]
Brake release current [AF136] [AF143]
Brake apply frequency [AF137] [AF144]
Q
A
!