Omron SX-F Instruction Manual page 149

High power direct torque control inverters
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Process and Application Parameters [300]
EtherCAT index (hex)
Fieldbus format
Modbus format
Brake Fault trip time [33H]
Default:
Range
Communication information
Modbus Instance no/
DeviceNet no:
Profibus slot/index
EtherCAT index (hex)
Fieldbus format
Modbus format
Note The Brake Fault trip time should be set to longer time than the Brake release
time[33C].
The "Brake not engaged" warning is using the setting of parameter "Brake
Engaged time [33E]".
Following Figure shows principle of brake operation for fault during run (left)
and during stop (right)
Release torque [33I]
The brake release time [33C] sets the time the VSD delays before ramping up
to whatever final speed reference value is selected, to allow the brake to be
fully opened. During this time a holding torque to prevent roll-back of the load
can be activated. The parameter release torque [33I] is used for this purpose.
The release torque initiates the torque reference from the speed controller
during the Brake Release Time [33C]. The release torque defines a minimum
torque of release (holding) torque. The set release torque is internally overrul-
led if the actual required holding torque measured at the previous closing of
brake is higher.
The release torque is set with sign in order to define the holding torque direc-
tion.
Default:
Range
Communication information
Modbus Instance no/
DeviceNet no:
Profibus slot/index
EtherCAT index (hex)
Fieldbus format
Modbus format
Note Function is deactivated if set to 0%.
4c2c
UInt
UInt
33H Brk Fault
Stp
1.00s
A
1.00s
0.00 - 5.00s
43117
169/21
4c2d
Long, 1=0.1s
EInt
33I
Release
Trq
Stp
A
0%
-400% to 400%
43118
169/22
4c2e
Long, 1=1H%
EInt
Section 11-3
0%
141

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