S_*_SafetyActive outputs

NOTE:

If not specified as a concrete formal parameter name, the term S_*_SafetyActive represents a common placeholder for the "safety-related function activated" outputs in this documentation. * stands as a placeholder for the actual safety-related function, e.g., STO or SOS. Accordingly, S_*_Request is used for the related function block request inputs.

The supported safety-related functions are described in detail in the topic "Safety Function (Basics)".

Output signals of the function block for signaling the currently activated safety-related function, i.e., the actual status of the safety-related drive module.

Data type: SAFEBOOL

Following activation, each S_*_SafetyActive output depends on the status of the applied safety-related function request signal and therefore on the status of the respective control device/sensor connected to the related S_*_Request input (activated/not activated, interrupted/not interrupted, open/close, depending on the used control device/sensor type) and also on whether or not the function block has detected an error or the start-up/restart inhibit is active.

Connection: Connect these outputs to other safety-related function/function blocks for further evaluation or to output terminals of your application.

Each S_*_SafetyActive output of this function block may only control the process directly if this does not adversely affect the safety-related function

WARNING
	UNINTENDED EQUIPMENT OPERATION Verify that an S__SafetyActive output only controls the process directly if this does not adversely affect the safety-related function. Validate the overall safety-related function, including the start-up/restart behavior of the process, and thoroughly test the application. Failure to follow these instructions can result in death, serious injury, or equipment damage.*

WARNING

UNINTENDED EQUIPMENT OPERATION

Verify that an S_*_SafetyActive output only controls the process directly if this does not adversely affect the safety-related function.
Validate the overall safety-related function, including the start-up/restart behavior of the process, and thoroughly test the application.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Value	Description
SAFETRUE	The respective safety-related function is activated, i.e., the defined safe state has been achieved. The supported safety-related functions are described in detail in the topic "Safety Function (Basics)". The following conditions must be met: The function block has been activated (input Activate = TRUE) and the respective request for the safety-related function (value SAFEFALSE) applies at the related S__Request input (in other words: the connected safety-related control device/sensor is activated or inoperable) and* no start-up/restart inhibit is active and the function block has not detected an error. Peculiarity for S_STO_SafetyActive: After indicating the active STO function, the axis coasts down. Therefore, S_STO_SafetyActive = SAFETRUE does not necessarily imply the standstill of the axis. The coast down time depends on physical properties of the used components, such as weight, torque, friction, etc. Refer to the hazard message below the table.
SAFEFALSE	The respective safety-related function is not activated ('normal operation'). This may be due to one of the following reasons: The function block is not active (Activate input = FALSE) or no request for the safety-related function (value SAFETRUE) applies at the related S_*_Request input (in other words: the connected safety-related control device/sensor is not activated and not inoperable) or a start-up/restart inhibit is active or the function block has detected an error.

Value

Description

SAFETRUE

The respective safety-related function is activated, i.e., the defined safe state has been achieved.

The supported safety-related functions are described in detail in the topic "Safety Function (Basics)".

The following conditions must be met:

The function block has been activated (input Activate = TRUE)
and the respective request for the safety-related function (value SAFEFALSE) applies at the related S_*_Request input (in other words: the connected safety-related control device/sensor is activated or inoperable)
and no start-up/restart inhibit is active
and the function block has not detected an error.

Peculiarity for S_STO_SafetyActive:

After indicating the active STO function, the axis coasts down. Therefore, S_STO_SafetyActive = SAFETRUE does not necessarily imply the standstill of the axis. The coast down time depends on physical properties of the used components, such as weight, torque, friction, etc.

Refer to the hazard message below the table.

SAFEFALSE

The respective safety-related function is not activated ('normal operation').

This may be due to one of the following reasons:

The function block is not active (Activate input = FALSE)
or no request for the safety-related function (value SAFETRUE) applies at the related S_*_Request input (in other words: the connected safety-related control device/sensor is not activated and not inoperable)
or a start-up/restart inhibit is active
or the function block has detected an error.

WARNING
	UNINTENDED EQUIPMENT OPERATION Make certain that no hazards can arise for persons or material during the coast down period of the axis/machine. Do not enter the zone of operation during the coast down period. Ensure that no other persons can access the zone of operation during the coast down period. Use appropriate safety interlocks where personnel and/or equipment hazards exist. Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

UNINTENDED EQUIPMENT OPERATION

Make certain that no hazards can arise for persons or material during the coast down period of the axis/machine.
Do not enter the zone of operation during the coast down period.
Ensure that no other persons can access the zone of operation during the coast down period.
Use appropriate safety interlocks where personnel and/or equipment hazards exist.

Failure to follow these instructions can result in death, serious injury, or equipment damage.