Siemens SENTRON Manual page 120

Operation
7.2 Functions of the inputs and outputs
NOTICE
Damage to the device
Do not connect inputs 207 to 209 to the power supply.
Do not connect inputs 413 to 417 to the power supply.
Pin 207: Common control terminal for inputs 208-209
Pin 207 is used as the common control terminal for inputs 208-209.
Pin 208: Input for test off load
This command enables a generator test without initiation of a transfer. The generator is
started via outputs 72-71-74.
The test can be carried out both in manual operation and in automatic mode. If the main
power supply is lost, this test is not possible (loss of the main power supply results in
termination of the test). The test is carried out when contacts 208 and 207 are closed.
Pin 209: Input for test on load
This command enables execution of a generator start and a complete transfer on load for
generator test purposes.
The test on load can only be carried out in automatic mode. The test is carried out when
contacts 207 and 209 are closed.
Pin 210: Inactive
Pin 413: Priority for test on load
During a test on load (pin 209), pin 413 causes the transfer switching equipment to remain in
position II (generator) while pin 209 is active. Transfer in source I is therefore not possible
during the test on load.
Note
The transfer switching equipment also remains in position II when the generator is not active.
Pin 414: Deactivating the delay for stabilizing source II
In network/generator applications, a fixed delay of 5 seconds is set for stabilization of the
generator (source II) when switching from I to II. By short-circuiting pin 414 with pin 417, this
delay can be deactivated regardless of the status of source II.
120
Manual, 08/2017, L1V30368969104A-02