Siemens SENTRON Manual page 109

Pin 312 - Enable Ctrl: Activating remote mode
This input enables remotely operated transfer switching for the 3KC4 and 3KC8 transfer
switching equipment. To activate the remote control, pin 312 must be closed with pin 317,
and the switch on the motor operator must be turned to the "Auto" position.
Inputs 314-316 (command for transfer to positon II/I/O) can be activated using input 312. If
pin 312 is not closed, remotely-operated transfer switching cannot take place (exception:
OFF command with priority - Pin 313).
On the 3KC8 transfer switching equipment, automatic mode of the electronic module is
deactivated by closing pins 312 and 317. The "Remote" LED is lit.
Pin 313 - OFF: Command for the OFF position with priority
Closing of this contact has the result that the transfer switching equipment is switched to the
OFF (O) position with priority over all other electrical commands (inputs 312 - 316, electronic
module). To enable execution of this priority command, this pin must be shorted to pin 317.
This input is independent of input 312 and can thus also be activated when that input is not
shorted. However, this requires the transfer switching equipment to be in the "Auto" position.
The transfer switching equipment remains in position O when pins 313 and 317 are shorted.
Transfer to other switch positions is prevented. Only after opening the pin can the transfer
switching equipment implement new commands.
As long as pins 313 and 317 are shorted, the warning LED on the motor operator is lit.
On the 3KC8 transfer switching equipment, automatic mode of the electronic module is
deactivated by shorting pins 313 and 317. The "Remote" LED is lit.
Pin 314 - II: Command for transfer to position II
Closing of this contact has the result that the transfer switching equipment is switched to the
II position. This command is activated if the following requirements are met:
● The switch on the motor operator is in the "Auto" position
● Contacts 312, 314 and 317 are connected to one another
● Contact 313 is open
Pin 315 - I: Command for transfer to position I
Closing of this contact has the result that the transfer switching equipment is switched to the
I position. This command is activated if the following requirements are met:
● The switch on the motor operator is in the "Auto" position
● Contacts 312, 315 and 317 are connected to one another
● Contact 313 is open
Manual, 08/2017, L1V30368969104A-02
7.2 Functions of the inputs and outputs
Operation
109