Safety Relay User Manual Owner's manual

Rockwell Automation Publication 440C-UM001C-EN-P - November 2014 131
Specifications Appendix A
The overall monitoring time to evaluate a fault and initiate a system response,
after the occurrence of a recoverable fault must consider any specific-fault
processing times depending on the I/O evaluation method and configured input
filter times. Table 2 6
shows the response time for specific recoverable faults, if the
safety function is not demanded, and the required settings of SMF and SOF to
enable the proper fault evaluation method.
Table 26 - Processing Time of Recoverable Faults and Required Settings
Table 27 - Response time of the Safety Chain at Occurrence of Recoverable Faults without a
Demand of the Safety Function
Recoverable Fault Detection Enabled by Processing Time
Cross loop fault Inputs: 2 N.C.
Pulse Testing: 2 Sources
3 s
Short circuit fault Inputs: 1 N.C., or 2 N.C.
Pulse Testing: 1 Source, 2 Sources
3 s
Input discrepancy fault Inputs: 2 N.C., 2 OSSD
Discrepancy Time: >0…3 s
Discrepancy time + Input Filter time
Reset/restart timing fault Default: 0.25…3 s 0 s
(1)
(1) A Reset/Restart Timing Fault can only occur when safety outputs are OFF, so there is no impact on the safety response time
Non-retriggerable timer fault Retriggerable: Disabled Configured time delay
(2)
(2) The maximum of the configured delay must be considered. The remaining time at occurrence of fault will lapse.
Muting: Synchronization time
exceeded
Synch Time: 0.05…10 s
Muting Sensors Input Filter: 0…3 s
Max. Synch Time
(3)
+ 2 x Input Filter Time
(3) The synchronization time between the Muting Sensors, and between Muting Sensor can be set individually. The longest
synchronization must be considered.
Muting time exceeded Max. Mute Time: 1 s…10 days Configured Max. Mute Time
Muting sequence fault Muting Type: 2 Sensor T-Type, 2
Sensor L-Type, 4 Sensor
Input Filter Time
Description Where to find: Value
SMF Fault processing Above table, according to
configured input
evaluation of the SMF
Logic Internal execution time to
process input signal,
routing and output
processing
(1)
(1) The internal execution time is static and independent of the number of function blocks that are configured for the safety function.
From technical
specification
45 ms (fix)
SOF Fault processing time and
configured time delay
From SOF configuration
Actuator Safety switching device
controlling the load
Actuator Operating manual
To ta l