SF_PSE

This is the web edition of the original ‎⮫ AC500-S safety user manual, version 1.3.2. This web edition is provided for quick reference only. The original safety user manual must be used to meet functional safety application requirements.

Standards	Requirements
ISO 13856-1:2013	Pressure-sensitive protective devices Part 1: General principles for the design and testing of pressure-sensitive mats and pressure-sensitive floors 4.7 Response of output signal switching device(s) to the actuating force
ISO 13856-2:2013	Pressure-sensitive protective devices Part 2: General principles for the design and testing of pressure-sensitive edges and pressure-sensitive bars 4.11 Reset function
ISO 13856-3:2013	Pressure-sensitive protective devices Part 3: General principles for design and testing of pressure-sensitive bumpers, plates, wires and similar devices 4.2.6.3 Reset function C.2.8 Result of sensor actuation
ISO 13849-1:2015	5.2.2 Manual reset function Note: A positive edge evaluation has the same quality as a negative edge evaluation.
ISO 12100-2:2010	6.2.11.4 Restart after power interruption If a hazard could be generated, the spontaneous restart of a machine when it is re-energized after power interruption shall be prevented (for example, by use of a self-maintained relay, contactor or valve).

This function block is a safety-related function block for monitoring pressure sensitive equipment (PSE) like safety mats, bumper etc.

Table 1072: FB name: SF_PSE
Name	Data type	Initial value	Description, parameter values
VAR_INPUT
Activate	BOOL	FALSE	⮫ Table 1049 “General input parameters”
S_PSE_In	BOOL	FALSE	Safety demand input. Variable. FALSE: PSE actuated, demand for safety-related response. TRUE: PSE not actuated, no demand for safety-related response. Safety control system must be able to detect a very short interruption of the PSE (which is specified in EN 1760: minimum 200 ms), when the PSE is used in applications as a safety device.
S_StartReset	BOOL	FALSE	⮫ Table 1049 “General input parameters”
S_AutoReset	BOOL	FALSE	⮫ Table 1049 “General input parameters”
Reset	BOOL	FALSE	⮫ Table 1049 “General input parameters”
VAR_OUTPUT
Ready	BOOL	FALSE	⮫ Table 1050 “General output parameters”
S_PSE_Out	BOOL	FALSE	Output for the safety-related response. FALSE: Safety output disabled. Demand for safety-related response (e.g., reset requested or internal errors active). TRUE: Safety output enabled. No demand for safety-related response.
SafetyDemand	BOOL	FALSE	Optional. ⮫ Table 1050 “General output parameters”
ResetRequest	BOOL	FALSE	Optional. ⮫ Table 1050 “General output parameters”
Error	BOOL	FALSE	⮫ Table 1050 “General output parameters”
DiagCode	WORD	16#0000	⮫ Table 1050 “General output parameters”

Typical timing diagrams

SF_PSE_TimingDiagram_1 — Fig. 485: Typical timing diagram for SF_PSE: S_StartReset = FALSE, S_AutoReset = FALSE

SF_PSE_TimingDiagram_2 — Fig. 486: Typical timing diagram for SF_PSE: S_StartReset = TRUE, S_AutoReset = FALSE

SF_PSE_TimingDiagram_3 — Fig. 487: Typical timing diagram for SF_PSE: S_StartReset = TRUE, S_AutoReset = TRUE

Error detection

The function block detects a static TRUE signal at Reset input.

Error behavior

S_PSE_Out is set to FALSE. In case of a static TRUE signal at the Reset input, the DiagCode output indicates the relevant error code and the Error output is set to TRUE.

To leave the error states, the Reset must be set to FALSE.

Function block-specific error and status codes

Table 1073: FB-specific error codes
DiagCode	State name	State description and output setting
C001	Reset Error 1	Reset is TRUE while waiting for S_PSE_In = TRUE. Ready = TRUE S_PSE_Out = FALSE SafetyDemand = FALSE ResetRequest = FALSE Error = TRUE
C011	Reset Error 2	Reset is TRUE while waiting for S_PSE_In = TRUE. Ready = TRUE S_PSE_Out = FALSE SafetyDemand = FALSE ResetRequest = FALSE Error = TRUE

Table 1074: FB-specific status codes (no error):
DiagCode	State name	State description and output setting
0000	Idle	The function block is not active (initial state). Ready = FALSE S_PSE_Out = FALSE SafetyDemand = FALSE ResetRequest = FALSE Error = FALSE
8001	Init	Activation is TRUE. The function block was enabled. Check if S_StartReset is requested. Ready = TRUE S_PSE_Out = FALSE SafetyDemand = FALSE ResetRequest = FALSE Error = FALSE
8802	Wait for S_PSE_In 1	Activation is TRUE. Check if Reset is FALSE and wait for S_PSE_In = TRUE. Ready = TRUE S_PSE_Out = FALSE SafetyDemand = TRUE ResetRequest = FALSE Error = FALSE
8402	Wait for Reset 1	Activation is TRUE. S_PSE_In = TRUE. Wait for rising trigger of Reset. Ready = TRUE S_PSE_Out = FALSE SafetyDemand = FALSE ResetRequest = TRUE Error = FALSE
8804	Wait for S_PSE_In 2	Activation is TRUE. Safety demand detected. Check if Reset is FALSE and wait for S_PSE_In = TRUE. Ready = TRUE S_PSE_Out = FALSE SafetyDemand = TRUE ResetRequest = FALSE Error = FALSE
8404	Wait for Reset 2	Activation is TRUE. S_PSE_In = TRUE. Check for S_AutoReset or wait for rising trigger of Reset. Ready = TRUE S_PSE_Out = FALSE SafetyDemand = FALSE ResetRequest = TRUE Error = FALSE
8000	Safety Output Enabled	Activation is TRUE. S_PSE_In = TRUE. Functional mode with S_PSE_Out = TRUE. Ready = TRUE S_PSE_Out = TRUE SafetyDemand = FALSE ResetRequest = FALSE Error = FALSE