A.2 Safety functions
Protective stop
Protective stop safety function
If any of the signals
InAutoStopExternalChA /B
(not always used) or
AutoStopDoorChain
are
0
, the safe outputs
OutAutoStopInternalExternal
and
OutAutoStopInternalRiskComponents
are set to
0
.
The protective stop is also activated by emergency stop (see above).
If external protective stop is communicated via a single channel dynamic signal
(
IsDynamicExternalAutostop
), only
InAutoStopExternalChB
is evaluated.
Resetting the protective stop safety function
When the first supervision signal (from the expansion relay)
SupervisionAutoStop
is
1
and both
InAutoStopExternalChA/B
and
AutoStopDoorChain
are
1
, the safe
output
OutAutoStopInternalExternal
and
OutAutoStopInternalRiskComponents
are reset as soon as the input
ResetAutostop
has been pulsed to
1
(at least 0.2
s).
If controlled exit of the cell is activated (
IsControlledExit
) the
ControlledExitButton
signal must be pulsed to
1
(and returned to
0
) within 30 s before
ResetAutostop
is set to
1
.
EnableLockDoor
EnableLockDoor
is a signal that can ensure that the door always unlocks regardless
of the robot’s lock command.
If any of the safe outputs is set to
0
, the output
EnableLockDoor
is also set to
0
.
EnableLockDoor
is only set to
1
when all safe outputs are set to
1
.
It can be used to route a lock signal from the robot through a relay,
Protective stop safety function of dangerous equipment
During an ongoing protective stop the output
OutAutoStopInternalRiskComponents
is set to
1
when
MotorsOnChA/B
are both
1
and
ResetAutostop
is pulsed to
1
.
As soon as one of the signals
MotorsOnChA/B
is
0
,
OutAutoStopInternalRiskComponents
is set to
0
.
Note that no monitoring occurs on the function which is tied to
OutAutoStopInternalRiskComponents
, so this function must have its own
monitoring.
Emergency stop: Pluto is slave
In this operating mode, the safety center emergency stop acts as emergency stop
buttons towards the external equipment.
Emergency stops from the external equipment are expected to come from the
emergency stop relays. The emergency stops must be reset on the external
equipment.
Continues on next page
54
Application manual - FlexLoader Standard Safety Center
3HAC051769-001 Revision: E
© Copyright 2014-2020 ABB. All rights reserved.
A Technical data
A.2 Safety functions
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