Lenze E94AxPExxxx - Manual (Page 570)

12 Basic drive functions
12.12 Brake control
570
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
12.12.4 Mode 1/11: Direct control of the brake
If the mode 1 or 11 has been selected in C02580 , the brake is directly controlled via the input
BRK_bReleaseBrake.

Tip!
Mode 1/11 can be used to easily check if the brake switches correctly.
• By the selection of the mode it is also defined in which way the brake is to be controlled:
• Mode 1: Direct brake control via a motor brake control module.
• Mode 11: Direct brake control via a digital output.
• Setting the pulse inhibit or controller inhibit does not influence the output signal.
• After the brake has been activated and the brake closing time has elapsed, the controller inhibit
is set automatically by the basic function "brake control".
• For the operation with a motor brake control module (mode 1) the desired polarity for
controlling the brake can be set in C02585 .

Note!
The digital outputs are not suitable for the "direct" control of a motor holding brake!
• The digital output used must be connected to a relay or power contactor which
switches the brake supply.
• If a power contactor is used, the response and release time of the contactor contact is
also added to the response and release time of the brake.
For the operation with the motor brake control module:
• For single-axis controllers (Single Drive) the control (release) of the motor holding
brake is only possible if both the DC-bus voltage and a 24-V supply voltage are
available for the motor brake control!
• For multi-axis controllers (Multi Drive) the motor holding brake can also be released
without a DC-bus voltage.