TEL AFA4000/E, Installation And Operating Manual

Page: 20 / 210

AFA4000/E VAV Airflow Controller / p.20
3.6 External connections
3.6.1 Inputs
The AFA4000/E has the following inputs:
3.6.1.1 Input 1, Input 2, Input 3
These are volt-free inputs configurable for:
•
Normally closed relays
•
Normally open relays or
•
Analogue 0 - 5 Vdc input
The inputs can be configured as:
Digital input functions (closed or
open volt free contact):
Note: Default values are:
Input 1: Night setback
Input 2: None
Input 3: Sash high
Fire Alarm Sash high
Mute Emergency
Fan stop External alarm
Personnel sensor Night set-back
Mains fail Alarm disable
Sash warning None
High / Low
Analogue input functions: Duct pressure Sash position
Volume pressure Temperature
Damper feedback
3.6.2 Outputs
The AFA4000/E has the following outputs:
3.6.2.1 Relay outputs 1, 2, 3
These are volt-free outputs configurable for:
•
Normally closed relays or
•
Normally open relays
Note: Changeover relays are available with the Econ power supply relay interface unit. The
relay interface has an AUX relay output that can be selected to duplicate the action of
R1, R2 or R3 via a DIP switch.