AFA4000/E
VAV Airflow Controller / p.180
14.
Select the required parity and press
Mute
.
15.
Select
Max Masters
, then press
Mute.
16.
Enter the required parameter and press
Mute
.
10.2.4
Testing the comms settings
The AFA4000 diagnostics menu (section 13.2) can be used to check the comms settings and
operation once the AFA4000 comms parameter settings have been set up.
Press the
↑
/
↓
buttons together from the Run screen to access the Diagnostics Menu.
Press the
↑
/
↓
buttons to select
Comms data
, then press
Mute
.
The Comms data for the relevant selected protocol will be displayed.
10.2.5
Troubleshooting the comms settings
10.2.5.1
BACnet protocol
If the device is not present on the network, check the following:
•
Make sure the AFA4000 is either in Run mode or is displaying the Diagnostics screen. The
comms are interrupted when the AFA4000 is in the pushbutton menus.
•
Power cycle the AFA4000. This is required if the protocol has been changed.
•
Make sure Max Masters is set to the number of devices on the network. If the value set is
larger than the actual number of devices the comms will be slowed and may cause time-out
issues.
•
Make sure the network is BACnet MS/TP and not BACnet IP. A separate router is required
for IP.
•
Use the Diagnostics Menu to check the comms settings are correct (see below):
•
Tx & Rx = 0
AFA4000 is not connected to the network (initial
set up).
•
Tx & Rx >0 but fixed values
AFA4000 has lost connection to the network.
•
Rx is counting but Tx is a fixed
value
AFA4000 is connected to the network but the
Master (BMS) is offline or not polling the
AFA4000.
Summary of Contents for AFA4000/E
Page 1: ...AFA4000 E VAV Airflow Controller Installation and operating manual Issue 2...
Page 57: ...AFA4000 E VAV Airflow Controller p 57 Figure 22 AFA4000 E inverter control connections...
Page 58: ...AFA4000 E VAV Airflow Controller p 58 Figure 23 AFA4000 E damper control connections...
Page 59: ...AFA4000 E VAV Airflow Controller p 59 Figure 24 AFA4000 E typical connection diagram...
Page 60: ...AFA4000 E VAV Airflow Controller p 60 Figure 25 AFA4000 E AS typical connection diagram...
Page 62: ...AFA4000 E VAV Airflow Controller p 62 Figure 27 SM7 airflow sensor dimensions...
Page 96: ...AFA4000 E VAV Airflow Controller p 96 6 9 Auto Sash System Control Box general wiring diagram...
Page 158: ...AFA4000 E VAV Airflow Controller p 158...
Page 182: ...AFA4000 E VAV Airflow Controller p 182 Figure 79 Connection diagram with RS232 485 converter...
