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Operation
10.4 Carrying out self-test
10.4
Carrying out self-test
TEST function
The proper function of the ready overload relay can be checked by pressing the TEST/RESET
button.
The following functions are tested:
• LEDs
• Device hardware
• Device configuration (GND FAULT, THERMISTOR): The actively parameterized functions are
tested.
Test phases
The test phase runs while the TEST/RESET button remains pressed for 6 seconds. During the test
phase, direct current is output at the terminals of the analog output. After 24 seconds, the
auxiliary contacts are closed and the feeder is thus disconnected. The self-test has been
completed.
The self-test can be aborted at any time by releasing the TEST/RESET button.
Resetting the relay after test triggering
Following a successful self-test, the relays are in the OFF state. To be able to switch the relays
again, you must acknowledge the end of the test. For this purpose, press the TEST/RESET button
again for longer than 1 s.
The relays respond differently depending on whether the overload relay is controlled at this time
via IO-Link or via the operator panel:
1. Control via IO-Link (automatic mode)
After acknowledging the test, the switching signals DO 0.0 and DO 0.1 pending from the
controller are valid. The relays therefore assume the states requested by the controller
immediately after acknowledgment of the test. The reset mode of the device (automatic
reset/manual reset) is irrelevant.
2. Control via operator panel (manual mode):
After acknowledgment of the test, you must switch the relays on again manually. The reset
mode of the device (automatic reset/manual reset), and the switching signals pending from
the controller (DO 0.0 and D0 0.1) are irrelevant.
88
SIRIUS 3RB24 electronic overload relay for IO-Link
Equipment Manual, 07/2022, NEB969165602000/RS-AA/003
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