Switch-On And Switch-Off Behavior - Kollmorgen SERVOSTAR 300 Instruction Manual

Technical description
6.7

Switch-on and switch-off behavior

This chapter describes the switch-on and switch-off behavior of the S300 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
STOPMODE
ACTFAULT /
STOPMODE
1 (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 soft-
ware: 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. 29). 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 functional safe also requires an electromechanical "make" contact
for the holding equipment and a suppressor device for the brake.
Behavior of the safety function STO
With the functional safe, certified safety function STO, the drive can be secured on stand-
still using its internal electronics so that even when power is being supplied, the drive
shaft is protected against unintentional restart. The chapter "Safety Function STO"
describes how to use the STO function. See page 37 onwards.
32
(error response, also depends on the specific error, see ERRCODE) and
(Enable signal response) dictate how the drive will behave.
Behavior (see also ASCII reference in the
ware)
0 Motor coasts to a standstill in an uncontrolled manner
Motor is braked in a controlled manner
Warning if the higher-level control system is to bring the drive to a standstill: Warn-
ing n05 is output if an input phase is missing, and the motor current is limited. The
servo amplifier 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 instance.
Error message if the servo amplifier is to bring the drive to a standstill: Error mes-
sage 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".
02/2017
Kollmorgen
online help of the setup soft-
S300 Instructions Manual