Safe limited speed output (sls_out) – Rockwell Automation 2094-EN02D-M01-S1 Kinetix 6200 and Kinetix 6500 Safe Speed Monitoring Safety Reference Manual User Manual
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Rockwell Automation Publication 2094-RM001C-EN-P - May 2013
Chapter 4
Speed Monitoring I/O Signals
Alternately, the first SS_Out output can be used to signal a programmable logic
controller (PLC) that a Safe Stop has been requested.
If the SS_In is ON (closed) and a successful Safe Stop Reset is performed, the
SS_Out output is turned ON. If Lock Monitoring is not enabled or the door
control logic state is Unlock, the SS_Out signal turns ON immediately when the
SS_In turns ON. If Lock Monitoring is enabled, and the door control logic state
is Lock, the SS_Out signal is not turned ON until the door has been locked by
using the DC_Out signal and the LM_In input has been verified as ON.
If the Stop Category is initiated or if a Safe Stop is initiated due to a fault, the
SS_Out output is turned OFF.
If an error is detected on either channel of the dual-channel output, a fault occurs.
I/O faults are Stop Category faults that initiate the configured Stop Category.
The fault is latched until the drive is successfully reset.
For more information on faults, refer to
Safe Limited Speed Output (SLS_Out)
The safe state for this signal in all cases is OFF.
The SLS_Out output functionality is determined by the configured Operation
mode. If the SLS_In is ON and a successful Safe Stop or Safe Limited Speed reset
is performed, the SLS_Out turns ON in all Safe Limited Speed modes except
Safe Limited Speed Status Only.
For the Safe Limited Speed modes (SLS), the SLS_Out is used to interconnect
speed monitoring drives in multi-axis applications. For SLS_Out to SLS_In
cascaded signals, the interface is a dual-channel sourcing solid state safety output
connected to a dual-channel safety input configured as OSSD.