socomec ATyS C55 - Test Operating Mode

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ATySController C55/65 - 549866C - SOCOMEC
12.5. Test operating mode
TEST button on the HMI can be used to perform a TEST ON LOAD (default setting) or TEST OFF LOAD (this requires a
change of conguration in the eld TEST BUTTON USE in "MAIN MENU" > "PARAMETERS" > "DISPLAY" > "OPTIONS").
TEST ON LOAD : a test on load sequence will start by sending a start-gen signal to the secondary source (if in Main-Gen)
, and will initiate a transfer to the the secondary source, once the test has ended the switch will transfer back to the priority
source.
A TEST OFF LOAD will initiate starting of the genset but will not give the order to transfer to the secondary source when it
becomes available.
The duration of the tests can be limited (in the conguration) or can be set to Unlimited, when set to unlimited the user will
have to press the test button again to stop the tests..
This operation can also be performed with an input or through the Modbus communication, using the EXTERNAL TEST ON
LOAD function.
TEST ON LOAD will cause a load supply interruption when testing the transfer function as the load will change from
one source to another in open transition.
For more information on the tests sequence see "Annex 16 - 5. Operating sequences", page 96.