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GB.TBLZ66.110620
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1. General
The TBLZ-1-66 accessory is a control system incorporated
into a control box. The control box is designed for installation in connection with the GOLD air handling units.
Communication cables for Modbus communication
should be connected between the control box and the
GOLD air handling units.
The control box contains a Programmable Logic Controller system and its front panel has a control terminal with a
display screen.
The buttons and display screen are used for entering settings and viewing readings for common functions.
2. Range of application
The TBLZ-1-66 control box is a control system for controlling two parallel GOLD air handling units.
One GOLD air handling unit is selected as the Master, and
the other unit is selected as the Slave.
The control box transmits set points to both air handling
units. These set points then control each unit separately.
If the air handling units are to be regulated on a VAV basis
and the duct pressure is to be kept constant, connect a
standard pressure sensor to the GOLD unit that operates
as the Master. The pressure readings are transmitted via
the communication system to the control box and are
processed there. This also applies to the external room
temperature sensor and the CO
2
sensor, if one is used in
the system.
Conditions
Parallel control is possible for the size 04–80 GOLD air
handling units.
The GOLD air handling units involved must be of the same
size.
The air handling units are considered parallel if they are
connected to a common duct system.
Both air handling units must be equipped with the same
accessories, such as an air heater, air cooler, dampers, etc.
Installation instructions for the TBLZ-1-66 control box for
controlling two air handling units (Twin Function)
GOLD 04-80
3. Installation
The control box should be installed in connection with the
GOLD unit selected as the Master.
It is advantageous if the control box panel and the handheld micro terminal of the Master air handling unit are
located in such a way that they can be operated and
supervised from the same place.
4. Technical data
Enclosure class IP 66
Ambient temp. 0 - +50°C
for a rel. hum. of 5 - 85% (non-condensing)
Weight 7 kg
Dimensions 380x300x220
(WidthxHeightxDepth)
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GB.TBLZ66.110620
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7. Description of functions
The ordinary control circuit card in the GOLD air handling
units controls its respective functions, but obtains set
points for certain functions of the control circuit card in
the control box.
The type of temperature and fan regulation to be used are
selected in the control panel of the control box.
All the other functions are set in the hand-held micro
terminal on the GOLD air handling unit that is the operational Master. The settings in the Master AHU are automatically copied over to the Slave AHU.
5. Electrical connections
The electrical connections are to be wired by a qualified
electrician in accordance with local electrical safety regulations.
The supply voltage to the control box must be singlephase, 230 V, and the cable conductors must be connected to wiring terminals 101 (L) and 102 (N).
The control box must be connected to the control circuit
card of the GOLD air handling unit with twisted-pair,
shielded communication cables. Communication is conducted via Modbus RTU and the control circuit card of the
control box is the communication Master.
The following wiring terminals must be connected as
specified below:
Terminal in the control box Terminal in GOLD unit
401 28 in the Master AHU
402 27 in the Master AHU
403 28 in the Slave AHU
404 27 in the Slave AHU
6. Commissioning
Energize the control box and both GOLD air handling
units.
Set the Modbus addresses for communication in both
GOLD units.
In the hand-held micro terminal, go to communication
below the Settings level.
Select EIA-485 and check under Protocol that Modbus
RTU is selected.
Go to Settings and set the following parameters:
Address 1 for the Master AHU and Address 2 for the Slave
AHU.
The speed should be 38,400; the parity should be “Even”;
Stop bits should be 1. This applies to both GOLD air handling units
7.1 Temperature regulation:
ERS and Supply air regulation
ERS and supply air regulation are controlled in each GOLD
unit. The settings in the control box are automatically
transmitted over to the air handling units.
Extract air regulation.
The extract air controller is located inside the control
box. The extract air controller transmits set points to the
supply air controllers of the GOLD air handling units. The
air handling units are then automatically set for supply air
regulation.
The extract air controller in the control box receives values
for extract air temperature from the Master AHU’s extract
air temperature sensor or via communication from external extract air /room sensors connected to the Master
AHU.
7.2 Fan regulation
Flow regulation
The total flow set on the control box panel is split equally
and is transmitted to the flow controllers of the GOLD air
handling units. The air handling units are then automatically set for flow regulation.
Pressure regulation
The pressure regulation controller is located inside the
control box. The pressure controller controls how the air
handling units operate by transmitting flow set points to
both GOLD air handling units. The control circuit cards of
the air handling units maintain constant airflow in both air
handling units. The air handling units are then automatically set for flow regulation.
The standard pressure sensor of the GOLD units are used
as duct pressure sensors in the common ducts. The duct
pressure sensors are connected to the Master AHU’s connections marked Internal EIA-485.
The control box controller receives pressure values from
the Master AHU via the communication system.
Demand regulation
If demand regulation is used, the Master AHU’s extract
air fan is controlled via signals on wiring terminals, inputs
32-33. The supply air fan of the Master AHU is controlled in response to the extract airflow as a Slave. The Slave
AHU copies the current flow regulation values and set
points from the Master air handling unit. The air handling
units are then automatically set for their respective functions.
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GB.TBLZ66.110620
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Settings
GOLD RX PARALLEL 2010 10/12 13:40
Manual Stop
Stop
8. Control panel and menus
8.1 Control panel buttons
The A buttons under the display screen, are used for navigating between the various menus. Text along the lower
edge of the display indicates the current function of the
buttons.
The B button is the Enter button. Press Enter to change a
function or a value at which the cursor is pointing. The
value can then be changed by selecting a new function,
or by entering a new value using the number buttons. The
Enter button confirms and also executes the entered selection or adjusted value.
The C buttons are used for moving the cursor in the display.
The D buttons are number buttons and are used for entering values.
8.2 Menus in the display
8.2.1 Main menu
The uppermost text line shows the type of air handling
unit, date and time of day.
The second and third lines show the current operating
mode of the Master air handling unit. Low speed, High
speed, Start up, etc.
The fourth line shows the operational setting of the
Master air handling unit. Stop, Manual operation or Automatic operation.
8.2.2 Settings menu
The buttons under the display are used for navigating to
the desired function/menu image.
MAIN: Return to the Main menu.
TEMPERATURE: Reading/setting temperatures.
FLOW/PRESS: Reading/setting flows/pressures.
INSTALLAT: Selection of temperature and flow
functions. Requires logging in.
A
B
CD
Set
GOLD RX PARALLEL 2010 10/12 13:40
Manual Stop
Stop
Set
LOG
OUT
TEMPE
RATURE
LOG
IN
INST
ALLAT
FLOW/
PRESSURE
MAIN
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GB.TBLZ66.110620
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4 www.swegon.com
LOG IN: Opens the Authorization level. Requires that you
enter a code.
LOG OUT: Closes the Authorization level.
8.2.3 Temperature
PREV: For returning to the next higher level.
READ: For reading temperatures.
SET: For setting temperature set points.
Readings
For reading current temperatures in the Master unit (Unit
1) and the Slave unit (Unit 2).
The first value for SA shows the current supply air temperature of each air handling unit, the second value shows
the current supply air set point of each air handling unit.
The first value for EA shows the current extract air temperature of each air handling unit, the second value shows
the current extract air set point (for extract air regulation)
in the control box.
The value for OUTDOORS shows the current outdoor temperature of the relevant air handling unit.
PREV: For returning to the next higher level.
Setting
PREV: For returning to the next higher level.
CTRL: For setting the temperature controller parameters.
Temperature controller
PREV: For returning to the next higher level.
Temperature
PREV. READ SET
Temperature AHU 1 AHU 2
SA 22.4°C/30.0°C 26.7°C/30.0°C
EA 21.9°C/23.0°C 27.1°C/23.0°C
OUTD 22.2°C 27.4°C
PREV.
Temperature set points
ROOM 23.0°C
Min. limit. 14.0°C
Max. limit. 30.0°C
PREV.
For setting of extract air temperature set points.
PREV. REG.
For setting of supply air temperature set points.
Temperature set points
Supply air 30.0°C
PREV.PREV. REG.
For setting the temperature controller parameters:
Prop factor Xp/Fp 50.00
I-time 60.0 sec.
Ctrl. deviation 10.7 K
Output signal 29.96°C
PREV.PREV.
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GB.TBLZ66.110620
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REG. EAREG.
SA
8.2.4 Flow/Pressure
PREV: For returning to the next higher level.
READ: For reading the current flows/pressures.
SET: For setting flow/pressure set points.
Readings
For reading the current flows or pressures.
In the display image to the right, SA is shown as pressure
regulation and EA as flow regulation.
The first value for SA shows the current pressure; the
second value shows the current pressure set point.
The first value for EA shows the total airflow from both air
handling units; the second value shows the current flow
set point.
PREV: For returning to the next higher level.
Setting
For setting the desired pressure in the common duct, or
for setting the total airflow from both air handling units.
In the display image to the right, SA is shown as pressure
regulation and EA as flow regulation.
If flow regulation is used, the control system of the control
box splits the airflow into two equal set points, one for
each air handling unit.
PREV: For returning to the next higher level.
CTRL. SA: For setting the parameters for the supply
air fan flow controller.
CTRL. EA: For setting the parameters for the extract
air fan flow controller.
Flow/Pressure
PREV. READ SET
SA -142 Pa/ 200Pa
EA 01/s/ 01/s
PREV. Flow/Pressure
SA 200 Pa/ EA low 300 l/s
SA max 1,000 l/s EA high 600 l/s
EA min 3,500 l/s
EA max 24,000 l/s
PREV. Pressure setting
For setting the flow controller parameters.
Prop factor Xp/Fp 50.00
I-time 30.0 sec.
D-time 1.0 sec.
Ctrl. deviation 34.2 K
Output signal 1,500 l/s
PREV.PREV.
For setting the desired pressure in the duct, or for setting the total airflow from both air handling units.
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GB.TBLZ66.110620
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6 www.swegon.com
8.2.5 To select temperatures and flow functions
The operator must log in onto Authorization level 3 in
order to be able to change the functions for temperature
or flow regulation, see Section 8.2.6.
PREV: For returning to the next higher level.
FUNCTIONS: For setting temperatures and flow func-
tions.
COMMUNICAT: For setting the parameters for commu-
nication with a main control system.
For selecting temperatures and fan functions.
The form of regulation for temperature regulation or flow/
pressure regulation can be selected by moving the cursor
to the relevant control configuration. When you press the
Enter button, a new window appears offering possible
alternatives. Select the desired type of regulation and
confirm by pressing the Enter button.
BACK: For returning to the next higher level.
To set the communication means
with the main control system
For selecting the communication system.
PREV: For returning to the next higher level.
Ethernet: For setting the Ethernet parameters.
Modbus: For setting the Modbus parameters.
To set Ethernet communication
To set the IP-address, netmask and gateway for Ethernet
communication.
PREV: For returning to the next higher level.
To set Modbus communication
PREV: For returning to the next higher level.
DIAGN.: Diagnostic of internal Modbus communi-
cation
FUNC
TIONS
COMMU
NICATPREV.
Temp.reg. Flow/Pressure
ERS Regulation 1 SA fan
Flow regulation
EA fan
Flow regulation
BACK
Communication
Mod-
bus
Ether
net
PREV.
IP address: 192.168.000.001
Netmask: 255.255.255.000
GateWay: 000.000.000.000
PREV.
PREV.
DIAGN.
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GB.TBLZ66.110620
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www.swegon.com 7
NEXT
Station no. 2 Number of items 2
Function 2 Error no. 0
Base addr. 6 Cycle time 4
File addr. 0
PREV.
GOLD 1 conn. GOLD 2 conn.
GOLD 1 OK GOLD 2 OK
Diagnostic of internal Modbus communication
PREV: For returning to the next higher level.
NEXT: Internal system diagnostic.
8.2.6 To log In/Out
You must log in at Authorization level 3 in order to obtain
authorization for changing temperature and flow regulation functions.
Press the “Log In” button, enter the digits: 1111. Then
press the Enter button. A confirmation will then appear on
the screen: “OK, level is 3”.
Your authorization will last for 5 minutes; then you will be
automatically logged out.
To log out manually, press the “Log Out” button.
Initialized 0 Length error 0
Diagnostic 0 Parameter error 0
Diagnostics 0 Start error 0
Range error 0
Value error 0
Media error 0
PREV. Server
Settings
LOG
OUT
TEMPE
RATURE
LOG
IN
INST
ALLAT
FLOW/
PRESSURE
MAIN
Password:
****
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GB.TBLZ66.110620
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