User Manual

2
Siemens
A6V11236956_en
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_a
Building Technologies 2017-11-27
Features
The AST22 interface converter provides the USB-PPS2 connection for accessing an
OpenAir
TM
VAV compact/modular controller or a networked actuator with PPS2 interface
using a Microsoft Windows PC.
Software ACS931 or ACS941 must be installed on the PC.
Delivery includes, in addition to the AST22 interface converter, two connection cables and a
service bag.
The AST22 powered over its USB and PPS2 connections. (VAV compact controllers require
separate power).
Application
Together with PC software ACS931 / ACS941, the AST22 supports commissioning and
servicing of OpenAir VAV compact and modular controllers:
κ G..B181.1E/3
κ G..B181.1E/KN
κ G..B181.1E/MO
κ G..B181.1E/BA
κ ASV181.1E/3
κ G..B111.1E/MO
Technical design
The AST22 interface converter includes two LED indicators and provides two connection
plugs.
AST22 interface converter
LED indicators
The two LED indicators and PPS2 indicate the operational state.
LED Color and status Display
Green ON USB power on
Flashing Data exchange between the AST22 and PC
PPS2
Green ON AST22 connected to a PPS2 device
Flashing
Data exchange between AST22 and PPS2
device
Interfaces
USB Connection plug, USB cable, type B
PPS2 Connection plug RJ45 for PPS2 connection cable
The interfaces on the AST22 service interface are galvanically separated.
Note