Lenze i700

6 Holding brake control
6.1 Operating modes
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Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06
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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 (0x6040
or 0x6840 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
L_MC1P_BrakeInterface function block
For Lenze Controllers, the L_MC1P_BrakeInterface FAST Motion FB is provided for the purpose of
controlling, containing the following functionality:
• 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
brake control".
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 optionally
with automatic torque feedforward control. Device states
( 190)
The basic conditions and timing are displayed in the illustration "Principal signal flow of the holding
brake control".
Object Name Required setting
Axis A Axis B
0x2820:1 0x3020:1 Brake: Operating mode 1: Activation via control word by ext. control system
Object Name Required setting
Axis A Axis B
0x2820:1 0x3020:1 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.
• the drive changes to the Switch on disabled
( 193) state.