TEL AFA4000/E, Инструкция по установке и эксплуатации

Страница: 28 / 210

AFA4000/E VAV Airflow Controller / p.28
3.7.4 Input functions
The AFA4000/E has 3 programmable inputs that can be set to:
•
Analogue (0 - 5 Vdc)
•
Digital open operation or
•
Digital closed operation
3.7.4.1 Analogue input functions
Function Description
Temperature
•
Any Input set to Analogue - Temperature
•
Temperature is displayed alongside airflow velocity in °C or °F (if
Show Temp is enabled)
•
Low Temp toggles on / off with other alarms in the status window
if temperature is less than the Low Temp Alarm point
•
Red Alarm LED Halo illuminated
•
Audible alarm sounds - can be muted by pressing the Mute
pushbutton
•
Low Temp relay operates (when configured)
•
High Temp toggles on / off with other alarms in the status window
if temperature is higher than the High Temp Alarm point
•
Red Alarm LED Halo illuminated
•
Audible alarm sounds - can be muted by pressing the Mute
pushbutton
•
High Temp relay operates (if configured)
•
Temp Error toggles on / off with other alarms in the status
window if a temperature sensor input is configured but a sensor is
not connected to the controller
•
Offset allows the displayed temperature to be offset by ± 5°C or ±
10°F
Sash Position Sensor
•
Any Input set to Analogue – Sash Position
•
Used to give calculated volumetric output signal based on sash
position and airflow velocity
•
Can also be used to give Sash High Alarm
•
Sash High toggles on / off with other alarms in the status window
if the sash height is higher than the calibrated position