2 triggering via state machine of device, Triggering via state machine of device, 6holding brake control – Lenze i700 User Manual
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6
Holding brake control
6.1
Operating modes
158
Lenze · i700 servo inverter · Reference manual · DMS 1.5 EN · 03/2014 · TD05
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6.1.1
Triggering via control word via external control (Lenze setting)
In this preset operating mode, the triggering takes place via the application program in the
Controller via bit 14 in the CiA402 control word (
or
for axis B).
• Bit 14 in the CiA402 control word = "0" close holding brake
• Bit 14 in the CiA402 control word = "1" release holding brake
Function block L_SMC_BrakeControl
For Lenze Controllers, the L_SMC_BrakeControl function block is available for control. It contains
the following functions:
• Torque feedforward control in case of release in order to prevent a sagging for active loads
(hoists).
• Considering the delay times of the holding brake during the opening and closing process.
• The delay times which have been transferred as parameters to the function block from the
application are considered.
• The brake parameters "closing time" and "opening time" of the i700 servo inverter are not
effective in this operating mode.
• Option to manually release the holding brake for service purposes via a control input.
The basic conditions and timing are displayed in the illustration "
Principal signal flow of the holding
6.1.2
Triggering via state machine of device
In this operating mode, the holding brake is triggered as a function of the device status.
The basic conditions and timing are displayed in the illustration "
Principal signal flow of the holding
Object
Name
Required setting
Axis A
Axis B
Brake: Operating mode
1: Activation via control word by ext. control system
Object
Name
Required setting
Axis A
Axis B
Brake: Operating mode
0: Triggering via device state machine
Note!
In the event of an error or when STO ("SafeTorqueOff") is activated, closing of the brake
and inhibit of the operation take place immediately without considering the set brake
closing time.