EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
Abbreviations and Definitions
Computer Aided Regulation Engineering;
the PC based tool used to configure
Central Processing Unit; an EXCEL 5000
System controller module.
The company that developed the
used to communicate on it.
Electromagnetic Interference; electrical
noise that can cause problems with
Energy Management System; refers to the
controllers and algorithms responsible for
calculating optimum operational parameters
for max. energy savings in the building.
Electrically Erasable Programmable Read
Only Memory; the variable storage area for
saving user setpoint values and factory
Erasable Programmable Read Only
Memory; the firmware that contains the
control algorithms for the Excel 10 FCU
Software stored in a nonvolatile memory
medium such as an EPROM.
Input/Output; the physical sensors and
actuators connected to a controller.
I x R
I times R or current times resistance; refers
to Ohms Law: V = I x R.
network and the Neuron
® network for
communication among Excel 10 FCU
National Electrical Code; the body of
standards for safe field-wiring practices.
National Electrical Manufacturers
Association; the standards developed by an
organization of companies for safe field
Network Variable; an Excel 10 FCU
Controller parameter that can be viewed or
modified over the L
Original Equipment Manufacturer; the
company that builds the fan coil units.
Potentiometer. A variable resistance
electronic component located on Excel 10
wall modules. Used to allow user-adjusted
Setpoints to be inputted into the Excel 10
section containing no more
than 60 Excel 10s. Two segments can be
joined together using a router.
segment that is separated by
a router from its Q7750A Zone Manager.
Time-Of-Day; the scheduling of Occupied
and Unoccupied times of operation.
Volt Amperes; a measure of electrical power
output or consumption as applicable to an
Voltage alternating current; ac voltage as
opposed to dc voltage.