KEB COMBIVERT S6 Series Installation Manual

GB - 20
Safety Function STO
Characteristic data for „Safe torque off“
• Powersupplyfortherotationdirectionofthemotorisinterrupted(free-wheelingmotor)
• Used when monitoring of standstill is not necessary
• Unintentional starting of the motor is prevented
• No galvanic isolation of the motor from the inverter DC link
WhatisrealizedbytheSTOfunctionrelatedtoEN60204?
EmergencystopcanberealizedbytheSTOfunction,sincethemainsvoltagemayremain
effective.
Emergencystopcanberealizedonlyinconnectionwithalinecontactor,whichdisconnects
the mains voltage !
3.1 Emergency stop according EN 60204
By using suitable safety switchgear units, stop category 0 and 1 according to EN 60204 can
bereachedbytheSTOfunctioninthesystem.Notechapter6forsafetyswitchgearunits.
Stop category 0
„uncontrolled stop“, i.e. stop by immediate removal of power to the
actuators.
Stop category 1
„controlled stop“, i.e. power to the actuators is retained to apply
braking until the stop is achieved. The energy is switched off at
standstill.
Emergency stop to EN 60204 must be functional in all operating modes of the drive module.
The reset of emergency stop may not lead to an uncontrolled start of the drive.
Restart
only after
conrmation
ThedriverestartsiffunctionSTOisnolongerreleased.Inorder
to comply with EN 60204, it must be ensured by external meas-
uresthatthedriverestartsonlyafterconrmation.
Withoutmechanicalbrakethedriveleadstocoast;motorisfree-wheeling.Additionalprotec-
tivedevicesmustbeinstalled(e.g.lockingsystems)ifdamagetopersonsorpropertycan
occur.
Ensure coast
of the motor
If danger to persons occur after switching off the motor control
bySTO,theentrancetohazardareasmustremaincloseduntil
the drive stops.
Jerks in error
case
In case of double malfunction it can lead to unwanted jerk, the
rotation angle is depending on the number of poles of the se-
lected drive and the gear ratio.
Calculationofthejerk:
Rotation angle of the jerk WR[°]=
180°
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Pole-pair number p • gear reduction ratio g

KEB COMBIVERT S6 Series Specifications

General

Brand	KEB
Model	COMBIVERT S6 Series
Category	Controller
Language	English