Test Of The Digital Input And Output Modules - Siemens SENTRON VL Series System Manual

3.5.1.8

Test of the digital input and output modules

To prevent malfunctions of the circuit breaker or one of its components, the test must only be
carried out before commissioning. The correct functioning of the CubicleBUS modules can
be checked in test mode. A distinction must be made between the individual modules.
Carry out test mode
● Test mode is started by pressing the "Test" button on the CubicleBUS module once.
● All inputs or outputs and the associated LEDs are then switched off.
● The color of the DEVICE LED changes from green to yellow.
● Repeated pressing of the "Test" button when the LED is switched on causes the relevant
input or output to be switched on and off alternately.
● On the input module, the signals are also transferred via the CubicleBUS as well as the
LEDs of the inputs, and then to any connected PROFIBUS DP.
● In the case of the digital outputs, the LEDs and associated outputs in each case are
switched through. This enables checking of the connected devices.
"Forcing"
The inputs of the input module, the outputs of the output module, the ZSI input and the ZSI
output can be "forced" via the communication system of Switch ES Power. This means test
mode can be switched on via the communication system and the inputs or outputs can be
overwritten for test purposes.
If the "Test" key is not pressed for longer than 30 s, or no change is triggered via the
communication system, test mode is automatically canceled.
Testing process
The table below shows the testing process for checking the digital inputs and outputs on the
CubicleBUS.
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
3WL air circuit breakers
3.5 External CubicleBUS modules
65