Technical data

10 APC NetworkAIR™ FM-DX
Microprocessor Controller
Microprocessor Controller
The microprocessor controller is
standard on each system. The con-
troller provides precision control
for the demanding requirements of:
• Data centers
• Control rooms
•Clean rooms
• Switch rooms
• UPS rooms
The easy-to-use display allows the
operator to select options from the
device’s menu-driven interface to
control and monitor the connected
air conditioning system.
Open Architecture
The NetworkAIR FM protocol is
open for integration with all build-
ing management systems.
Communication interface on the
system can be MODBUS RTU
RS485.
Control Type
Controller utilizes proportional and
integral derivative (PID), a time
proven precision environmental
control method. This allows for
custom tuning of control variables
to achieve desired system response.
Functions
• Status Report
• System Control
• Event Logging
• Redundant Unit Group
• Static Pressure Adjustment
Logging
The microprocessor displays the 64
most recent alarms. Each alarm log
contains a time/date stamp as well
as operating conditions at the time
of occurrence. The controller also
displays run time, in hours, for
major components (compressors,
heaters, humidifier, blower motors).
Control
The backlit, four-line x twenty-
character display is password
configurable.
• Temperature Setpoint 60-90° F
(15-32
° C)
• Humidity Setpoint 30-80% R.H.
• Blower Motor Setpoint 20-60Hz.
(Factory preset for model size and
options.)
• High Temperature Alarm 35-90
° F
(2-32
° C)
• Low Temperature Alarm 35-90
° F
(2-32
° C)
• High Humidity Alarm 15-85% RH
• Low Humidity Alarm 15-85% RH
Customer Interface Modules
Each unit comes equipped with up
to 3 additional discrete input/output
modules. Each interface module is
programmable with outputs that can
map from any system alarm through
the microprocessor controller.
Inputs are capable of mapping to
outputs as a system alarm or custom
alarm.
Alarms
• High control temperature
• Low control temperature
• High control humidity
• Low control humidity
• Clogged filter
• Return sensor failure
• High supply temperature
• Low supply temperature
• Loss or low airflow
• Loss of water flow
• Supply sensor failure
• Water regulator actuator failure
• Econ/MultiCool Actuator failure
• High head pressure
• Low suction pressure
• Humidifier failure
• Replace humidifier canister
• Frequency controller failure
• Air block interlock open
• Water detected
• Fire (thermal sensor trip)
• Smoke detected
• Condensate pump failure

Alarm LED

Warning LED

Check Log LED

System On LED

Liquid Crystal Display (LCD)

Menu Selection scroll keys

ESC key

Enter key

Help key