AFA4000/2
Airflow Monitor / p.153
Problem
Check for
•
Tx & Rx >0 but fixed values. The AFA4000 has lost
connection to the network.
Rx is counting but Tx is a fixed value. The AFA4000 is
connected to the network but the Master is offline or not
polling the AFA4000.
13.1.2
RS485 comms
Problem
Check for
BACnet:
Device not present on
Network
•
Ensure the AFA4000/2 is in Run mode or Diagnostics
screen. The comms are interrupted when the AFA4000 is
in the pushbutton menus.
•
Power cycle the AFA4000. This is required when the
protocol has been changed.
•
Ensure Max Masters is set to the number of devices on
the network. When the value set is larger than the actual
number of devices the comms will be slowed and may
cause time out issues.
•
Ensure the network is BACnet MS/TP not BACnet IP - a
separate router is required for IP.
•
Check the comms settings are correct in the
(section 13.2).
Modbus:
Device not present on
Network
•
Ensure the AFA4000/2 is in Run mode or Diagnostics
screen. The comms are interrupted when the AFA4000 is
in the pushbutton menus.
•
Power cycle the AFA4000. This is required when the
protocol has been changed.
•
Ensure the network is Modbus RTU.
•
Check the coms settings are correct in the
(section 13.2).
Summary of Contents for AFA4000/2
Page 1: ...AFA4000 2 Airflow monitor Installation and operating manual Issue 1 ...
Page 50: ...AFA4000 2 Airflow Monitor p 50 Figure 21 AFA4000 2 typical connection diagram ...
Page 51: ...AFA4000 2 Airflow Monitor p 51 Figure 22 AFA4000 2 AS typical connection diagram ...
Page 52: ...AFA4000 2 Airflow Monitor p 52 5 4 Dimensions Figure 23 AFA4000 2 and AFA4000 2 AS dimensions ...
Page 53: ...AFA4000 2 Airflow Monitor p 53 Figure 24 SM7 airflow sensor dimensions ...
Page 90: ...AFA4000 2 Airflow Monitor p 90 6 10 Auto Sash System Control Box general wiring diagram ...
Page 127: ...AFA4000 2 Airflow Monitor p 127 ...
Page 140: ...AFA4000 2 Airflow Monitor p 140 Figure 69 Typical connection diagram ...
Page 144: ...AFA4000 2 Airflow Monitor p 144 Figure 70 Connection diagram with RS232 485 converter ...