User Manual

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Siemens TX-I/O Engineering and installation guide CM110562en_13
Building Technologies Commissioning notes 2019-05-15
8 Commissioning notes
Before commissioning, the checks applicable to the I/O module system must be carried
out as described in Section 7.
This is particularly important in relation to checking for incorrect wiring which could put
people or property at risk. See also Section 2, "Safety guidelines".
The plug-in modules can be removed from or plugged into the terminal bases without
switching off the power (but not suitable for frequent action – risk of burnt contacts
between terminal base and plug-in module, if large loads are connected to the
terminals).
However, note the warning on page 31, if you plug in a different, previously used
module!
In the event of a bus communications failure, emergency manual operation is possible
in I/O modules with local override facilities. However, the DC 24 V module supply must
be present.
The override buttons on the switching and positioning outputs must not be used
as safety isolators, e.g. for service or maintenance purposes.
Use suitable emergency switches instead.
The functions of the I/O modules can be checked with the BIM Tool:
The procedure for checking from the automation station depends on the building
automation and control system concerned, and is described in the associated
documents.
8.1 Response on module start-up
The modules assume the Power_Off status when the supply to the module drops below
16 V, or is not yet above 21.5 (hysteresis).
• The LEDs and LCDs are off
• The modules are inactive.
The modules start up when the voltage rises above 21.5V.
The associated steps are as follows:
• Module status LED lights up, LCD reads the address number for approx. 2 s
• Status LED shows the last operating state before Power_Down
• If communication is OK:
– Integration via island bus or PROFINET BIM: operation with configurable
values, see [4]
– Integration via P-Bus BIM : operation as before Power_Down
• If no communication: Wait 4 seconds for communication
– No control of outputs
• If no communication after 4 seconds:
– Integration via island bus or PROFINET BIM:
– Operation with backup values
– Local override is possible
– Local override may be disabled in the configuration
Warning
Removing and inserting
modules without
disconnecting the power
Emergency operation
via override
Safety isolation
Function check
Power_OFF
Power_UP