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4
Function Description
4.3
Safety functions
Sicherheitsfunktion_SS1_SS2_Ausloesung
Sicherheitsfunktion_SS1_Reaktion
4-12
The safety function is activated via
1/0 pulse edge at the input "SS1 Activate"
or
1/0 pulse edge at the input "SS1 SIL3/Reset"
Internal error
Signal status of the inputs "SS1 Activate" and "SS1 SIL3/Reset"
The STO delay time starts when one of the two inputs "SS1 Activate"
or "SS1 SIL3/Reset" is set to "0". The safety function "STO" is acti-
vated once the STO delay time has elapsed.
The safety function "STO" is activated immediately if the second input
is also set to "0".
The safety function "STO" is always activated when both the inputs
"SS1 Activate" and "SS1 SIL3/Reset" are set to "0".
The method by which the servo amplifier receives the command for
controlled braking of the motor is defined in the Configurator:
– Drive-activated: After the safety function is triggered, the safety
card issues a command to the servo amplifier for controlled braking
of the motor. The braking ramp is configured in the Configurator.
– Controller-activated: After the safety function is triggered, the
control system issues a command to the servo amplifier for con-
trolled braking of the motor. The braking ramp must only be con-
figured in the Configurator if monitoring of the braking ramp is also
activate there.
Input
Safety Card
Servo Amplifier
v
t
M
Drive-activated braking ramp
Input
Safety Card
Servo Amplifier
v
t
M
Controller-activated braking ramp
Controller
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