Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual User Manual
Page 127
Rockwell Automation Publication 440C-UM001C-EN-P - November 2014
127
Specifications
Appendix A
Table 24 - For SMF2 - Safety Mat
A demand of the Safety Mat will force a safe state after 100 ms.
Monitoring Time - Occurrence of Recoverable Faults and Failures
Recoverable faults as defined earlier (
and failures within the connected periphery of the CR30. The ability to detect
faults depends on the wiring, the type of sensor, and the signal evaluation
function that is applied to the circuit. The monitoring time is the amount of time
to evaluate the fault or failure after detection and to initiate appropriate system
response. Recoverable faults can be recovered by removing the fault and cycling
the appropriate input circuit.
The detection of a recoverable fault does not lead to the loss of the safety
function. When the safety function is demanded during the monitoring time,
after the occurrence of a recoverable fault, the system will respond within the
safety response time according to the response time considerations of this safety
function (See
System Response Time Calculation on page 124
).
Note:
Monitoring measures that are provided by CR30 to the periphery
define the diagnostic coverage of the application and thus the safety rating.
Internal monitoring measures related to a fail-safe design of CR30 are only
related to the safety integrity of the CR30 itself, see “nonrecoverable”
faults.
Examples of recoverable faults include:
•
Cross loop and shorts to 24V and COM faults
•
Input discrepancy
•
Muting: Synchronization times exceed
•
Muting time exceeded
•
Muting sequence fault
•
Two-hand discrepancy fault
•
Reset/Restart timing fault
Comment
Value
Safety Sensors
Safety response time of sensor device
- considered as 0 ms since
mechanical device only
0 ms
SMF
Safety mat processing time
25 ms
Input Filter
Advanced Settings: Input Filter: 0 ms
0 ms
Logic
Internal execution time to process
input signal, routing, and output
processing
45 ms
SOF
Configured Off-Delay time -
immediate OFF
0 ms
Actuator
Same contactor is controlled by the
safety mat SMF as by the E-stop
30 ms
Total
100 ms