Switch-On And Switch-Off Behavior - Kollmorgen SERVOSTAR 640 Instruction Manual

Technical description
6.7

Switch-on and switch-off behavior

This chapter describes the switch-on and switch-off behavior of the SERVOSTAR 6xx and the steps
required to achieve operational stopping or emergency stop behavior that complies with standards.
The servo amplifier's 24 V supply must remain constant. The ASCII commands
ACTFAULT (error response) and STOPMODE (ENABLE signal response) dictate
how the drive will behave.
STOPMODE
0 (default)
Behavior during a power failure
The servo amplifiers use an integrated circuit to detect if one or more input phases (power supply
feed) fail. The behavior of the servo amplifier is set using the setup software: Under "Response to
Loss of Input Phase" (PMODE) on the Basic Setup screen, select:
l
l
Behavior when undervoltage threshold is reached
If the undervoltage threshold is undershot in the DC bus link (the threshold value depends on the
type of servo amplifier), the error message "UNDERVOLTAGE, F05" is displayed. The drive
response depends on the ACTFAULT/STOPMODE setting.
Behavior with enabled "holding brake" function
Servo amplifiers with an enabled holding brake function have a special procedure for switching off
the output stage ( ð p. 24). Removing the ENABLE signal triggers electrical braking. As with all
electronic circuits, the general rule applies that there is a possibility of the internal "holding brake"
module failing. Bringing a motor to a standstill using a holding brake in a way that is personnel safe
also requires an electromechanical "make" contact for the holding equipment and a suppressor
device for the brake.
Behavior of the restart lock -AS-
With the personnel safe restart lock –AS-, the drive can be secured on standstill using its internal
electronics so that even when power is being supplied, the drive shaft is protected against uninten-
tional restart. The chapter "Personnel safe restart lock -AS-" describes how to use the restart lock
–AS-. See page 70 onwards.
26
ACTFAULT
0
1 1 (default)
Warning if the higher-level control system is to bring the drive to a standstill: Warning n05 is
output if an input phase is missing, and the motor current is limited to 4 A. The servo ampli-
fier is not disabled. The higher-level control system can now selectively end the current cycle
or start bringing the drive to a standstill. Therefore, the error message "MAINS BTB, F16" is
output on a digital output of the servo amplifier and evaluated by the control system, for ins-
tance.
Error message if the servo amplifier is to bring the drive to a standstill: Error message F19
is output if an input phase is missing. The servo amplifier is disabled and the BTB contact
opens. Where the factory setting is unchanged (ACTFAULT=1), the motor is braked using
the set "EMERGENCY STOP RAMP".
12/2010
Behavior (see also ASCII reference in the
tup software)
Motor coasts to a standstill in an uncontrolled manner
Motor is braked in a controlled manner
®
SERVOSTAR 640/670 Instructions Manual
Kollmorgen
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