4.3 Data points – detailed description
The following is a detailed description of the information
that each data point provides; input variables and output
variables are described separately:
Name of data point
Access as viewed from the central BMS
–
WR – Defaults for the volume flow controller or
room, from the central BMS
–
RD – Data provided by the volume flow con-
troller or room
List of volume flow controller equipment functions
for which the variable is available
–
FH – Fume cupboard controller
–
RR – Room controller for supply air or extract air
(RS, RE, PC)
–
RR RMF – Room controller with active room
management function
–
EC, SC – Single controller for supply air or
extract air (EC, SC)
–
TAM – Adapter module
–
TAM RMF – Adapter module with active room
management function
Unit of measure (applies only to BACnet objects of
type Analogue Value Object)
Function and special functional values with their
meaning
Access to the data point using a BACnet object or
Modbus register
TROX UNIVERSAL CONTROLLER:
RS/RE
- Volume flow controllers for supply or
extract air
RS/RE
RMF
- Volume flow controller with active room
management function
PR*/PD*
- Room pressure controller or duct for
supply or extract air
PR*/PD*
RMF
- Room pressure controller or duct with
active room management function
4.3.1 Input variables
MODE
BMS access: WR RD
Equipment function:
EASYLAB
–
FH, RR with RMFM, TAM with RMF
TROX UNIVERSAL
–
RE/RS with RMF, PR*/PD* with RMF
Function
FH: Operating mode default setting for a single fume
cupboard controller, only with individual operating
mode default setting (stand-alone operation)
RMF: Operating mode default setting for the entire
room
–
The valid binding of the input variable results in a
valid operating mode default setting via BACnet
or Modbus
–
The invalid binding or no setting does not lead to
any operating mode default setting in the con-
troller or room.
–
Which operating mode is then used depends on
the default options available on the controller
Functional values (BACnet / Modbus)
1/0 = No default: The central BMS does not default
an operating mode for the controller or room.
The operating mode is set locally, e.g. on the room
control panel, on the fume cupboard control panel,
or using switch contacts.
If the operating mode is not set locally, the controller
activates standard mode.
2/1 = Standard mode: Normal operation in the day-
time (in Germany: usually according to DIN 1946,
part 7, 25 m³/h extract air per m² main useful floor
area)
3/2 = Reduced operation: Low mode in comparison
to standard mode, e.g. as a night-time setback
4/3 = Increased operation: High mode in compar-
ison to standard mode, e.g. in an emergency
5/4 = Shut-off: Shut-off of the volume flow controller,
e.g. to save energy at night or to shut down the
system
6/5 = OPEN position: Open position of the volume
flow controller
Data point
BACnet: Multistate Value Object – Instance MV-2
Modbus: Register 0
Interface information
Data points – detailed description > Input variables
Expansion module EM-IP
47
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