6.3 Motor holding brake
A 24V / max.1.5A holding brake in the motor can be controlled directly by the amplifier.
CAUTION
No functional safety! Danger by falling load (in case of suspended load,
vertical axes). An additional mechanical brake is required for funktional
safety, which must be safely operated.
The brake only works with sufficient voltage level (ð p.27). Check voltage drop, measure
the voltage at brake input and check brake function (brake and no brake).
The brake function must be enabled through the BRAKE setting (screen page: Motor). In
the diagram below you can see the timing and functional relationships between the
ENABLE signal, speed setpoint, speed and braking force. All values can be adjusted with
parameters, the values in the diagram are default values.
During the internal ENABLE delay time of 100ms (DECDIS), the speed setpoint of the
servo amplifier is internally driven down an adjustable ramp to 0V. The output for the
brake is switched on when the speed has reached 5 rpm (VELO), at the latest after 5 sec-
onds (EMRGTO).
The release delay time (t
brH
) and the engage delay time (t
brL
) of the holding brake that is
built into the motor are different for the various types of motor (see motor manual), the
matching data are loaded from the motor database when the motor is selected.
A description of the interface can be found on page 64.
S300 Instructions Manual 29
Kollmorgen 02/2017 Technical description
TBRAKE
X9/2-1
X3/15
X3/4-5
max.5s
U
F
U
U
n
tbrH
5
VEL0
U
U
TBRAKE0
tbrL
t
t
t
t
t
t
t
STO-ENABLE
X4/5
t
U
DECDIS
EMRGTO
ramp
ramp
emergency stop
SW internal
Braking force
BRAKE
Speed
ENABLE
internal
ENABLE
Analog-In
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