S_OutControl input

State-controlled input for controlling the contactors connected to the S_EDM_Out function block output. This may, for example, be the enable signal from an EmergencyStop function block of an emergency-stop circuit.

Data type: SAFEBOOL

Initial value: SAFEFALSE

The S_OutControl input controls the S_EDM_Out output signal of the function block, taking the feedback signals at function block inputs S_EDM1 and S_EDM2 into consideration.

Connection: Connect this input to a signal (value SAFETRUE or SAFEFALSE); constant SAFETRUE or SAFEFALSE values are not permitted. A typical application, for example, would involve connecting the S_OutControl input to the enable signal of an upstream safety-related function block (e.g., SF_EmergencyStop, SF_TwoHandControlTypeII, etc.).

If the function block is activated (input Activate = TRUE), the possible values at this input lead to the following function block behavior:

Value	Description
SAFETRUE	The upstream safety-related function is not requested. The function block verifies the initial state of the connected contactors via the feedback signals at the S_EDM1 and S_EDM2 inputs. If the initial state is ok (S_EDM1 and S_EDM2 = SAFETRUE), the function block also outputs a SAFETRUE signal at the S_EDM_Out output. Refer to the hazard message below this table.
SAFEFALSE	The upstream safety-related function is requested. The S_EDM_Out output is switched to SAFEFALSE.

If no start-up inhibit has been specified for the function block, the SAFETRUE status at the S_OutControl input can cause the S_EDM_Out output to immediately switch to SAFETRUE.

WARNING
	UNINTENDED START-UP If no start-up inhibit is specified: Be sure that your risk analysis includes an evaluation for the state change at the S_EDM_Out output after applying SAFETRUE to the S_OutControl input. Make certain that appropriate procedures and measures (according to applicable sector standards) have been established to help avoid hazardous situations when applying SAFETRUE to the S_OutControl input. 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 START-UP

If no start-up inhibit is specified:

Be sure that your risk analysis includes an evaluation for the state change at the S_EDM_Out output after applying SAFETRUE to the S_OutControl input.
Make certain that appropriate procedures and measures (according to applicable sector standards) have been established to help avoid hazardous situations when applying SAFETRUE to the S_OutControl input.
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.