User Manual

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Siemens Building Technologies SED2 LON Module Operating Instructions CE1B5193en
HVAC Products 2 LON module overview 26.06.2006
2 LON module overview
2.1 General description
The LONMark® certified SED2 LON module provides direct digital control of SED2 Vari-
able Speed Drives (VSDs). The SED2 can reside on a L
ONWorks® network, enabling
information sharing with all other L
ONMark products from multiple vendors.
The SED2 LON
module is LONMark-compliant with Variable Speed Motor Drive Func-
tional Profile Number 6010. It uses standard network variable types for communication,
allowing a SED2 VSD to be configured, controlled, and monitored via the L
ONTalk®
network. A network management tool installs the VSD on the network and binds the
network variables to other devices on the network for seamless integration.
The LON
module’s modular snap-on design facilitates simple installation and enables
easy control system integration via any existing or new VSD. The LON
module offers a
cost-effective solution by reducing system installation and by allowing direct integration
to control systems.
For example, an air handling unit controller sends messages to control the start/stop
and speed reference of the SED2. The VSD outputs messages such as the actual drive
speed and the output current to the controller, operating interfaces, and energy man-
agement systems.
nvoFanSpeed nviDrvSpeedStpt
nvoDrvSpeed
nvoDrvCurnt
nviDrvSpeed
nviDrvCurnt
5193B01
MOTOR DRIVE
(VARIABLE
SPEED DRIVE)
FAN COIL UNIT
CONTROLLER
BUILDING
MANAGEMENT
SYSTEM
2.2 LON module functionality
The foundation of the SED2 LON module is a Neuron 3120 processor, which manages
the LON
software functionality. The LON software functionality is based on LONMark
Functional Profile Number 6010 for Variable Speed Motor Drives. In addition to the
Standard Network Variable Types (SNVTs) of this Functional Profile, several others
have been added:
• Two sets of inputs were added for feedback and setpoint. Two sets of outputs were
added for local drive information and controlled feedback. Each input and output set
consists of five points, including:
− High pressure point
− Low pressure point
− Temperature point
− CO2 point (measured in PPM)
− IAQ point (measured as a percentage)
Only one of these points may be accessed for each set.
• Six output points were added for status of digital inputs
• One point was added for alarm
• One point was added for drive reset
Example of
using the SED2
LON module