Brake Control Function (Brk) - Omron RX2 Series User Manual

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Brake Control Function (BRK)

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.
Precautions for Correct Use
• For using the brake control function, we recommend using controls that generate high torque
when the control system [AA121] is started such as:
Use the following brake control functions.
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.
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 sig-
nal for the input terminal function are available.
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] = 01: Brake control 1 common in forward/reverse rotation, 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
High-function General-purpose Inverter RX2 Series User's Manual
Valid for both forward and reverse
[AF131]
[AF132]
[AF133]
[AF134]
[AF135]
[AF136]
[AF137]
8 Applied Settings
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