Signal Interconnection
6.5 Application 5
Guide for the SINUMERIK 840D sl machine configuring
Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
6-13
Interconnection of the PLC input signals
● "Infeed Ready" (SLM terminal X21.1)
The infeed is operating when the "1" signal is on.
Interconnection of the PLC output signals
Notice
To achieve a safe control of the line contactor and the drive-integrated SH/SBC safety
function by SINAMICS, the control signals must be provided by a safety relay (3TK28) or a
SIMATIC F controller. This is required so that a deactivation is achieved in accordance with
the required safety categories.
● "2. OFF3" for all axes (NCU terminal X122.2)
The "2. OFF3" will be forwarded to all axes of the NCU. The "2. OFF3" must be
interconnected to the provided NX components (NX terminal X122.2). This means that
the axes downstream from the NX also receive the enable.
Note
The "2. OFF3" signal must also be locked by the safety controller.
Interconnection between the safety controller and the NCU and NX components
● The SH/SBC function must be controlled by the safety controller using two channels.
The first channel goes to the NCU/NX.
The second channel goes to the Motor Module.
If required, appropriate groups (1/2) can be formed that must be controlled depending on
the switching condition. The feedback of the SH/SBC function must be evaluated in the
safety controller.
Interconnection of the NCU 7x0 component
● "Infeed Ready" (connection between SLM terminal X21.1 and NCU terminal X122.1)
After activating the infeed, given correct operation, the "Infeed operation" state will be
attained and all axes (BI: p0864) will be enabled. This status must also be forwarded to
the NX components (NX terminal: X122.1).
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