ABB FlexLoader, Applications Manual

Page: 55 / 68

Regardless of the external equipment, the FlexLoader equipment continues in
emergency stop on activation of any internal emergency stop button.
Emergency stop safety function
At internal emergency stop, that is InEmergencyStopInternalChA/B becomes 0 ,
all safe outputs, that is OutEmergencyStopExternal , OutEmergencyStopInternal ,
OutAutoStopInternalRiskComponents , and OutAutoStopInternalExternal , are
set to 0 .
At external emergency stop, that is InEmergencyStopExternalChA/B becomes 0 ,
all internal safe outputs, that is OutEmergencyStopInternal ,
OutAutoStopInternalRiskComponents and OutAutoStopInternalExternal , are
set to 0 .
At an emergency stop, the protective stop function is also force activated.
Resetting the emergency stop safety function
If there is an internal emergency stop, that is InEmergencyStopInternalChA/B is
0 , the cause of the internal emergency stop must be rectified. It requires a check
of the supervision signal (from the expansion relay), that is
SupervisionEmergencyStopExternal is 1 , and that
InEmergencyStopInternalChA/B then turns to 1 . The safe output
OutEmergencyStopExternal is then reset to 1 .
When the supervision signal (from the expansion relay)
SupervisionEmergencyStopInternal is 1 and the external emergency stop cause
is rectified, that is InEmergencyStopExternalChA/B is 1 , the emergency stop
output OutEmergencyStopInternal is reset to 1 .
Protective stop can then be reset according to the rules for protective stop.
Emergency stop: Pluto is master
In this operating mode, the external emergency stop is evaluated as if it was an
emergency stop button.
The emergency stop to the external equipment comes from the emergency stop
relays outputs. The emergency stop must be reset on the FlexLoader equipment.
Emergency stop safety function
If an external or internal emergency stop is made, that is if one of the signals
InEmergencyStopInternalChA/B or InEmergencyStopExternalChA/B becomes
0 , all safe outputs, that is OutEmergencyStopExternal , OutEmergencyStopInternal ,
OutAutoStopInternalRiskComponents and OutAutoStopInternalExternal , are
set to 0 . The output ResetEmergencyStopLamp is set to 1 .
At emergency stop, the protective stop function is also forcibly activated.
Resetting the emergency stop safety function
When all emergency stop inputs, that is InEmergencyStopInternalChA/B and
InEmergencyStopExternalChA/B are 1 the output ResetEmergencyStopLamp
starts to flash.
Before resetting, both supervision signals (from expansion relay)
SupervisionEmergencyStopInternal and SupervisionEmergencyStopExternal
must be 1 . When the ResetEmergencyStop signal has been pulsed to 1 (at least
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Application manual - FlexLoader Standard Safety Center 55
3HAC051769-001 Revision: E
© Copyright 2014-2020 ABB. All rights reserved.
A Technical data
A.2 Safety functions
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