Safe stop input (ss_in), Safe limited speed input (sls_in), Door monitor input (dm_in) – 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
Safe Stop Input (SS_In)
The SS_In input is intended for connection to an E-Stop device.
The SS_In input must be active to initiate Safe Stop monitoring. If the SS_In
input is being monitored, a transition from ON to OFF (closed to open) is used
to request the configured Stop Category.
In a cascaded configuration, the SS_In inputs of the middle and last drives are
connected to the Safe Stop (SS_Out) output of an upstream drive.
Safe Limited Speed Input (SLS_In)
The SLS_In input is used to connect to a switch whose OFF state requests Safe
Limited Speed monitoring.
If Safe Limited Speed monitoring is configured, the SLS_In input is monitored
from the time of a successful Safe Stop Reset or Safe Limited Speed Reset, until
the time that the configured Stop Category is initiated or the Safe State is
entered.
If the SLS_In input is being monitored, the OFF state is used to request the Safe
Limited Speed monitoring functionality of the drive.
In a cascaded configuration, the SLS_In inputs of the middle and last drives are
connected to the Safe Limited Speed (SLS_Out) output of an upstream drive.
Door Monitor Input (DM_In)
This input monitors the status of the door to indicate if it is open or closed. The
DM_In input can be connected to a non-guardlocking switch if the door does
not need to be locked. The door status is monitored by the first unit in multi-axis
systems.
The DM_In input is intended for connection to a guardlocking switch when the
drive is configured as a master device with door monitoring. When the drive is
configured as a slave in a cascaded system, its DM_In input is connected to the
Door Control output (DC_Out) of the upstream drive.
for more information.