Operating Instructions
Modular Safety Control System MSC
30
(Translation of the original operating instructions) 2121331-04-04/19
7.1.4. RESTART_FBK
Using the RESTART_FBK signal, MSC can monitor a feedback loop signal (External Device Monitoring – EDM) from external
contactors; both manual and automatic forms of starting can be programmed (see list of the possible connections in Table 17).
WARNING
Ì If necessary, the response time of contactors must be checked using an additional device.
Ì The command switch for starting (RESTART) must be installed outside the danger zone in a place
from which there is a clear view of the danger area and the entire working area affected.
Ì It must not be possible to actuate the command switch from inside the danger zone.
Each OSSD pair has a corresponding RESTART_FBK input.
OPERATING MODE EDM RESTART_FBK
AUTOMATIC
With K1_K2 control
K2K1
24V
ext_Restart_fbk
Without K1_K2 control
24V
ext_Restart_fbk
MANUAL
With K1_K2 control
K2K1
24V
ext_Restart_fbk
Without K1_K2 control
24V
ext_Restart_fbk
Table 17: Restart_FBK configuration
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