12 • _CONF – Device configuration and I/O Subject area Parameter Description MC6000/7000
_ENCD
_VAL
Index
_VFCON
_PMOD
_KPAD
Contents
Introduction
_SIO
_SCTY
_REF
_SYS
_IO1
_IO2
_CAN
_OPT1
_MOT
_CONF
_TCON
_SCON
_PCON
465-BRAKE - Actuation mode for motor brake
Source: Brake mode
Function: Parameter only on MC7000.
Operation mode of holding brake, activation with function selector FOS03
1) Depending on the window for motor standstill, parameter SPD_0 (_CONF)
Values:
Minimum Maximum Factory set. Unit MODE SMARTCARD Type
SPD_0 HOLD2 HOLD2 – R1W2 APPLI USIGN8
Settings:
No. Setting Holding brake engages when ...
0 SPD_0 motor is stopped 1) and control is disabled.
1 ERR_1 an error occurs and the motor is stopped 1).
2ERR_2
an error occurs and the motor is stopped 1) or no
later than 400 ms after occurrence of the error.
3 ERR_3 an error occurs (immediate).
4 HOLD the start signal is removed
5HOLD1
the motor is stopped 1) or when an error occurs
(immediate). When the holding time 467-THTDC
expires the control is shut off.
6HOLD2
the motor is stopped 1) or when an error occurs
and the motor is stopped or after no more than
400 ms. When the holding time 467-THTDC
expires the control is shut off.
Note:
On restart the holding brake is only released when the motor ready to start, i.e.
when the flux build-up phase in asynchronous machines is complete.
Attention!
With settings ERR_3 and /START the holding brake is always activated immediately,
regardless of the current motor speed. Braking at high speeds impairs the durability
of the brake, however. Depending on the external moment of inertia, this may result
in the brake sticking and so damage the motor ("breakdown braking"). This is
accepted as a reasonable risk in many safety devices.
The durability of the holding brake types in the form of the maximum permissible
braking energy (lifetime switching) is given in the M
ASTERDRIVE data specification
booklet and must always be taken into account in parameter setting (commission-
ing) !
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