Safety Integrated - Industry - Siemens

Ex. No.
5.3
Function Test
After the hardware components have been wired and the S7
and SIMOCODE pro projects have been downloaded, the assigned
inputs and outputs can be checked for functionality.
Assigned inputs and outputs
No. HW component Terminal Symbol Signal (default
value)
1 EMERGENCY STOP input IN4 EMERGENCY
STOP
2 EMERGENCY STOP pushbutton
contact 1
3 EMERGENCY STOP pushbutton
contact 2
4 Acknowledge EMERGENCY STOP
button
Testing inputs and outputs
168 Functional Example No. CD-FE-I-042-V10-EN
Note Device
1 EMERGENCY STOP
activated at 0
SIMO
Y11 - Y12 1 3TK2823
Y21 - Y22 1 3TK2823
Y33 - Y34 0 3TK2823
5 Contactor K1 14 K1 3TK2823
6 Operational switching OUT1 Output 1 0 Start 3TK28 at 1 SIMO
7 Operational switching star-delta OUT2 Output 2 0 Start 3TK28 at 1 SIMO
8 ON button OP buttons ON OP
9 OFF button OP buttons OFF OP
No. Action Reaction Note
1 Ensure that the EMERGENCY STOP pushbutton
is released
2 Press the Acknowledge EMERGENCY STOP
button.
3 Press the ON> or ON>> button on the
SIMOCODE operator panel
If the EMERGENCY STOP has been activated,
the 3TK28 must be acknowledged. The contacts
K1, K2 and K4 are closed.
Contactor K1 responds and there is voltage
on contact 24 of the 3TK28.
Output OUT1 switches voltage to contactor
K2, and the outputs OUT2 and OUT3 switch
voltage to the contactors K4 and K3 as per
star-delta switching.The contactors respond
accordingly.
4 Press the EMERGENCY STOP pushbutton. Contactors K1, K2 and K4 release, activation
of the EMERGENCY STOP is signaled to
SIMOCODE via contact 24 of the 3TK28.
SIMOCODE switches outputs OUT1 and
OUT2 to 0.
5 Release the EMERGENCY STOP pushbutton.
Contacts K1, K2 and K4 are closed
6 Press the Acknowledge EMERGENCY STOP
button.
Contactor K1 responds and there is voltage
on contact 24 of the 3TK28.
3TK28 is acknowledged and the load
can be started via SIMOCODE
The motor runs
The load is stopped safely
SIMOCODE has activated the
EMERGENCY STOP, no fault is signaled.
3TK28 is acknowledged and the load
can be started via SIMOCODE