ABB i-bus KNX AA/A 2.1.2, Руководство по эксплуатации продукта

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ABB i-bus
®
KNX
Commissioning
AA/S 4.1.2, AA/A 2.1.2 | 2CDC505163D0201 19
3 Commissioning
The Analogue Actuator is used to convert physical values (2 bytes, 4 bytes) or relative values (1 byte) into
analog voltages (0…1 V, 0…5 V, 0…10 V, 1…10 V) or currents (0…20 mA, 4…20 mA).
This enables HVAC components such as ventilation flap or other device actuators to be integrated into the
KNX system.
The parameter Type of output can be used separately to select the required voltage or current signal (not
applicable to AA/A). Activating an output launches a display of additional parameters and group objects in
ETS. Active outputs have a group object
Input value , a group object Status Actual value and other group
objects depending on the output parameters.
Th
e required input format (1…4 bytes) and how the output reacts to a reset, bus voltage recovery, etc.,
can be specified for each active output.
There are other parameters that enable the use of forced operation objects to raise actuation priority,
monitor input objects for a period of time, and set a dimming function.
3.1 Overview
HVAC applications
The Analogue Actuator is suitable for actuating ventilation flaps, vents and frequency converters in HVAC
applications.
A 0
…10 V signal is normally used as a control variable for this (corresponding to, e.g., 0...100%).
This control signal can be used to open or close valves or flaps by activating a motor or frequency
converter that moves the valve or flap in the relevant direction.
It can also be used to specify setpoints via the 0
…10 V output, for example to set the target temperature
for a boiler.
Example: Possible temperature range 30 °C to 80 °C; here, a 5 V signal would correspond to an output
temperature of 55 °C.
The application allows you to create a characteristic, which means that the system can also control
complex variables such as those for 6-way valves (attention, the Analogue Actuator has only one control
value input!) or valves with an operating range of 2
…10 V.
Lighting applications
An Analogue Actuator, especially the 0
…10 V interface, can also be used as a control signal for a lighting
circuit (e.g. LED), to control brightness or lamp/LED color.
When the actuator is used as a 1
…10 V output it can also actuate ballasts of up to 4 mA (per output).