Digital Servo Amplifier SERVOSTAR 400 - BIBUS SK, sro

Kollmorgen 07/03 General
1.7.5 LED display
A 3-digit LED display indicates the amplifier status after switching on the 24V supply
(� p.59). The address can be read out while it is being set on the master by using the keys.
1.8 Grounding system
AGND – ground reference for analog signals, internal analog ground
DGND – ground reference for digital signals and auxiliary supply voltage, optically isolated
The electrical isolation is indicated in the block diagram (� p.15).
1.9 Motor holding brake conrol
A motor holding brake (24V / max.1,5A) can be controlled directly by the servo amplifier. This
function does not ensure personnel safety! The brake function must be enabled through the
BRAKE parameter (on the screen page for Motor): the setting is WITH. In the diagram below you
can see the timing and functional relationships between the ENABLE signal, speed setpoint, speed
and braking force.
During the internal ENABLE delay time of 100ms the speed setpoint of the servo amplifier is internally
driven down a 10ms ramp to 0V. The brake output is switched on when 3% of the final speed
is reached, at the latest after 1 second.
The rise (fbrH) and fall (fbrL) times of the holding brakes that are built into the motors vary for the different
types of motor (see motor manual).
A description of the interface can be found on Page 38.
Personnel-safe operation of the holding brake requires an additional “make” contact in the brake circuit
and a spark suppressor device (e.g. a varistor) in the recommended brake circuit:
SERVOSTAR
SERVOSTAR ® 400 Installation manual 19