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Technical description
2.11
Grounding system
AGND — analog inputs, internal analog ground, encoder emulation, RS232, CAN
DGND — digital inputs/outputs and the 24V supply, optically isolated.
2.12
Control circuit for motor-holding brake
A 24V / max.1.5A holding brake in the motor can be controlled directly by the servo ampli-
fier. This function does not ensure personnel safety! The brake function must be
enabled through the BRAKE parameter (screen page: Motor, setting: WITH). In the dia-
gram below you can see the timing and functional relationships between the ENABLE sig-
nal, speed setpoint, speed and braking force.
During the internal ENABLE delay time of 100ms, the speed setpoint of the servo ampli-
fier is internally driven down an adjustable ramp to 0V. The output for the brake is
switched on when the speed has fallen to 3% of the preset final speed, at the latest after
1 second.
The rise (f
rent for the various types of motor (see motor manual). A description of the interface can
be found on page 42. Operation of the brake in a manner that provides personnel safety
requires an additional "make" contact in the brake circuit, and a suppressor device, such
as a varistor, for the brake circuit. Recommended circuit:
22
12/05
) and fall (f
) times of the holding brake that is built into the motor are diffe-
brH
brL
SERVOSTAR
®
SERVOSTAR
300 Installation Manual
Kollmorgen
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