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Siemens
Central control unit RMB795B
CE1P3122en
Building Technologies
Commissioning
18.01.2012
5.3.2
Assign extension modules
The number of inputs and outputs of the RMB795B central control unit can be
increased by attaching extension modules.
Each central control unit RMB795B can be connected to these modules:
Number
Type
Purpose
1
RMZ785
Extension of inputs with 8 universal inputs.
2
RMZ787
Extension of inputs and outputs by 4 universal inputs each
and 4 relay outputs each
The extension modules are activated simply by attaching them to the RMB795B
central control unit. The positions of the extension modules must be set on the
central control unit.
Example showing the assignment of positions:
RMB795B
RMZ785
RMZ787(1)
RMZ787(2)
Position 1
Position 2
Position 3
Observe the following notes in connection with the extension modules:
•
Prior to attaching an extension module, the system must be disconnected from
power
•
Free configuration can also contain connections to the extension modules. The
relevant functions are only active if the respective extension module has been
connected and activated
•
The extension modules can be arranged in any order desired
5.3.3
Settings
Main menu > Commissioning > Basic configuration
Operating line
Adjustable values / remarks
Basic type
B
Position 1
---, RMZ785, RMZ787(1), RMZ787(2)
Position 2
---, RMZ785, RMZ787(1), RMZ787(2)
Position 3
---, RMZ785, RMZ787(1), RMZ787(2)
A fault status message will be generated in the following cases:
•
If the extension modules actually fitted and their positions do not agree with the
values entered on the list of the central control unit
•
If, during operation, an extension module becomes defective
No.
Name
Effect
7101 Fault
extension
module
Urgent message; must be acknowledged.
Selection
Activation and
assignment
Configuration
Fault status messages
