Basic Documentation

21 / 42
Siemens VAV Compact Controller Modbus RTU A6V10631862_en--_e
Smart Infrastructure 2021-10-26
5.2 Configuration and maintenance tools
Configuration and maintenance of VAV Compact Controllers can be accomplished
with the following tools:
• Using the PC software ACS941or ACS931 together with the interface converter
AST22 via the configuration and maintenance interface of the VAV Compact
Controller or
• Using the handheld tool AST20.
5.2.1 PC software ACS941 and ACS931
The PC software ACS941 is designed for service and maintenance staff and is
used for setting and displaying the parameter values on a PC. Instructions for use
of this software can be found in [6].
The PC software ACS941 allows to set or to display the parameters as listed in
section 5.1. The software supports trend functions and allows comparing the
values set by the OEM with the values currently stored in the device. Thus,
changes by parties other than the OEM can be detected.
Figure 1: ACS941 with VAV (left) and network (right) configuration pane
Next to the PC software ACS941, an OEM version ACS931 with extended
functionality is available as well. ACS931 allows OEM read/write access to all
operation and reference values. Its distribution is therefore restricted to OEM
customers. For more details, see [5].
5.2.2 Handheld tool AST20
Using the handheld tool AST20, VAV and communication parameters can be set or
retrieved. Instructions for the use of the AST20 can be found in [3].
The AST20 is designed for portable use on-site. Power supply and establishing the
communication between AST20 and a VAV Compact Controller are realized with a
3-core connection cable.
Areas of use
Functionality
Design