Implementation of safety requirements from applicable standards
The function block has been developed according to the safety requirements (from applicable standards) listed in this section. All other requirements from these standards must be observed when implementing the safety-related function.
This section describes either how the function block meets the requirements of the standards or what measures need to be taken to meet the requirements of the standards.
Standards | Context/Requirement | Implementation | |
---|---|---|---|
DIN EN ISO 14119 | Interlocking guard
| The S_GuardMonitoring input must be connected to the switch for the safety equipment so that the safety-related function block can evaluate the status of the connected safety equipment (open/closed). If S_GuardMonitoring = SAFEFALSE, the function block switches the S_GuardLocked enable output to SAFEFALSE. The S_GuardLock input must be connected to a feedback signal for the guard locking on the safety equipment so that the safety-related function block can evaluate the status of the guard locking on the safety equipment (locked/unlocked). If S_GuardLock = SAFEFALSE, the function block switches the S_GuardLocked enable output to SAFEFALSE.The S_SafetyActive input must be connected to a signal generated outside of the safety-related function block, which indicates the status of the zone of operation. This input indicates whether the zone of operation is in the defined safe state. (Monitoring using standstill monitor, for example). If input S_SafetyActive = SAFEFALSE, the function block switches the S_GuardLocked enable output to SAFEFALSE.When S_SafetyActive = SAFETRUE, a request can be made to unlock the guard locking on the safety equipment using UnlockRequest. The signal generated by the user to indicate the defined safe state of the zone of operation should only change to SAFETRUE if there is no risk of injury in the zone of operation.You are responsible for controlling S_SafetyActive. Once the closed safety equipment has been locked, the safety-related function block supports the option of a restart inhibit, depending on the specification made at S_AutoReset. After the function block has been activated, it supports the option of a start-up inhibit, depending on the specification made at S_StartReset. | |
DIN EN ISO 14119 | Interlocking device with guard locking:Conditional unlocking (four-stage interlocking ![]() ×‣ Interlocking in Accordance with DIN EN ISO 14119/14120 ×) | The correctly connected safety-related function block supports four-stage interlocking. You are responsible for implementing the connection. | |
EN ISO 13849-1 | Manual reset device | The Reset input supports the function of the manual reset device.
|
|
EN ISO 12100-2 | Start-up after failure of supply voltage/spontaneous restart | The function block supports a start-up inhibit and/or restart inhibit of the function block after
|
|
EN ISO 13849-1 | Category B to 4 | Single-channel or two-channel connection must be established depending on the category.
|