Summa Series Servodrive Product Manual
STO
Document Version: V1.01
(Dec, 2019)
© 2019 ESTUN Automation Co., Ltd. All right reserved.
11-12
Wiring the Safety Function Device
Connect the Safety Function Device to the CN6 port according to the wiring example shown in Figure 11-
4.
Figure 11-4
Wiring example for Safety Function Device
0V
CN6
HWBB1-
HWBB2+
HWBB2-
EDM+
EDM-
OUT2
OUT1
T-
T+
﹣
Output
Power
Supply
+
IN2
IN1
Input
Monitor
24V Power Supply
HWBB1+
Safety Light Curtains
Servodrive
Safety
Function
Device
Use armored cables to protect the HWBB1+ and HWBB2+ from short circuits.
Use the EDM signal at the common emitter output, making sure that the current flows from EDM+ to EDM-.
When the safety grating is blocked, the HWBB1 and HWBB2 signals turn OFF, and the EDM signal is
turned ON to enter the Safe State.
When the blocking of the safety grating is released, the HWBB1 and HWBB2 signals turn ON, and the
Drive will enter the Operating State.
Validating Safety Functions
When you commission the system or perform maintenance or Drive replacement, you must always
perform the following validation test on the STO function after completing the wiring. (It is
recommended that you keep the confirmation results as a record.)
When the HWBB1 and HWBB2 signals turn OFF, confirm that the Panel Operator displays SAF and
that the Motor does not operate.
Monitor the ON/OFF status of the HWBB1 and HWBB2 signals.
If the ON/OFF status of the signals do not coincide with the display (Un006), the following must be
considered:
−
An error in the external device.
−
Disconnection of the external wiring, short-circuiting in the external wiring.
−
A failure in the Drive.
Find the cause and correct the problem.
