Swegon MIRU Control Instruction and safety manual

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MIRU Control Function Guide,
GOLD/MIRUVENT
1. General
The MIRU fan control system can control one type MIRU-
VENT power roof ventilator.
Up to ten power roof ventilators with MIRU Control
equipment can be connected to one GOLD air handling
unit by means of bus communication (requires GOLD
program version 6.03 or better).
This guide is meant for use as guidance in the electrical
wiring and commissioning of MIRU Control equipment in
combination with a MIRUVENT power roof ventilator. The
function guide also deals with the electrical connections
betweenMIRU Control and GOLD air handling units.
The fan motor in the MIRUVENT power roof ventilator
should be a type AC motor with integrated frequency
inverter, or EC motor with integrated motor control system
that communicates with MIRU Control via Modbus.
2. Material Specification
Control of MIRUVENT fan via MIRU Control:
MIRU Control equipment TBMZ-11
MIRUVENT fan with type code MIRU-x-xx-xx-3-0
or MIRU-x-xx-xx-1-x
x = model and size codes
Pressure sensor, pressure regulation TBLZ-1-23-aa*
Pressure sensor, flow measurement TBLZ-1-23-aa*
aa = code for cable length in metres.
The cable from the pressure sensors must be long enough
to reach the MIRU Control equipment.
Outdoor temperature sensor TBLZ-1-25-2**
Wiring to the GOLD unit:
Connection kit: TBLZ-1-64
Contains cable adapter and communication cable.
Miscellaneous:
3-wire cable for communication to the MIRUVENT fan:
2-wire cable for possible outdoor temperature sensor.
Cable for supply voltage to MIRU Control, 230 V.
Cable for supply voltage to the MIRUVENT fan.
1 x 230 V or 3 x 400 V, see separate installation instruc-
tions for the MIRUVENT.
* At least one pressure sensor for either pressure regulation or flow
measurement is mandatory. Two pressure sensors are possible, one for
pressure regulation and one for reading the flow.
** For outdoor temperature compensation only

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3. Basic Installation Diagram
MIRU Control
GOLD air handling unit (TBLZ-1-
64 connection kit is required)
MIRU Control equip-
ment
Power roof ventilator
MIRUVENT
Outdoor/room temperature sensor
TBLZ-1-25-2
Pressure sensor, flow
TBLZ-1-23-aa
(to be installed inside the
MIRUVENT)
Pressure sensor, pressure regulation
TBLZ-1-23-aa
Supply voltage
1-phase, 3-wire, 230 V AC
(cable not included in supply)
Supply voltage
See MIRUVENT instructions
(cable not included in supply)
3-wire. Twisted pair cables are recommended.
If shield is to be used, the shield must be con-
nected to the AHUs'/roof fans' chassi and not
connected to MIRU Control
(not included in supply)
2-wire, min. permissible cross-sectional cable area: 0.5
mm², max. 100 metres long (not included in supply)
3-wire. Twisted pair cables are recommended.
If shield is to be used, the shield must be connected to the
AHUs'/roof fans' chassi and not connected to MIRU Control
(not included in supply)
Modular cable (incl., 1-15 m long)
Modular cable (incl., 1-15 m long)
The cables to the MIRUVENT power roof ventilator
should be appropriately run through the cable pro-
tection (accessory) of the roof penetration collar.

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4. Communication
Physically install the GOLD air handling unit, MIRUVENT
power roof ventilator and the MIRU Control equipment.
See separate installation instructions.
4.1. MIRU Control and MIRUVENT power
roof ventilator
Wiring the connections to MIRU Control
Connect the 3-wire cable to terminals 11 (A), 12 (B) and
13 (GND) on the control circuit card inside the MIRU Con-
trol unit. See illustration.
A twisted-pair cable is recommended.
Wiring the connections to the MIRUVENT
MIRUVENT with AC motor and integrated frequency
inverter
Unfasten and bend up the upper section of the frequency
inverter.
Place the upper section in the groove designed to receive
it in the lower section.
Connect the communication cable to terminals A, B and
GND, next to the Bus marking. See illustration.
MIRUVENT with EC motor and control system
Connect the communication cable to the wiring terminals
inside the safety switch enclosure.
Connect conductor A to terminal 4, conductor B to termi-
nal 5 and GND to terminal 6.
The internal electrical connections to the motor control
system have already been wired.
AB GND AB -- -GND
8910 11 12 13 14 15 16 17 18 19 20 21
STOP LS HS TEMP
INT.BUS(FAN)
TERM.ON OFF
Control circuit card,
MIRU Control
A}
(GND)
Control circuit card terminals, frequency inverter, MIRUVENT
BBus
L1
N
Aux NO
Aux NO
Aux NC
Aux NC
1
N
6
5
78
N
2
2
3
PE
5
6
4
A
GND
B
PE
Terminals in the safety switch enclosure, MIRUVENT
White - orange
Others
Orange

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4.2. MIRU Control and
TBLZ-1-23-aa pressure sensor
If pressure regulation is used, install the pressure sensor
on or near the MIRUVENT fan’s extract air duct. See illus-
tration. Set the pressure sensor function selector switch to
position 1. See illustration.
If flow regulation is used, install the pressure sensor at
a suitable location in the compartment for the fan motor
inside the MIRUVENT fan. Connect tubes to the existing
measurement tappings in the same space. Connect the
tube from the blue tapping to pressure port (-) and con-
nect the tube from the white tapping to pressure port (+)
on the pressure sensor. Set the pressure sensor function
selector switch to position 0. See illustration.
Connect the modular cable to an optional modular con-
nection in the pressure sensor. See the illustration.
If the pressure sensor for pressure regulation and for flow
measurement is used, they must be connected in series.
Connect modular cable(s) to MIRU Control in modular
connection X10 and/or X11. See illustration.
Notches for running
cables (2 channels)
Modular connections
TBLZ-1-23-aa pressure sensor
LNPE AB GND AB -- -GND
12 453
SUPPLY
COM NO
OP.
689101112131415161718192021X10 X117
COM NO
ALARMINT. BUS STOP LS HS TEMP
EXT.BUS(BMS) INT.BUS(FAN)
X12
TERM.ON OFF
TBLZ-1-23-aa
pressure sensor
Extract air duct
Function selector
switch
TBLZ-1-23-aa pressure sensor
Control circuit
card,
MIRU Control

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4.3. MIRU Control and TBLZ-1-25-2
outdoor/room temperature sensor
Install the TBLZ-1-25-2 temperature sensor; see separate
installation instructions.
Connect the 2-wire communication cable having min. per-
missible cross-sectional cable area of 0.5 mm² and a max.
permissible length of 100 meter. See illustration.
20 21
Control circuit card, MIRU Control
Temperature sensor
TBLZ-1-25-2
Max. permissible length:
100 m
Min. permissible cross-sec-
tional cable area: 0.5 mm²
4.4. MIRU Control and
GOLD air handling unit
This section is only of interest if you are wiring electrical
connections to the GOLD air handling unit.
The TBLZ-1-64 connection kit accessory is required. The
connection kit contains a cable adapter and a modular
cable.
Install the cable adapter on the DIN rail inside the electrical
cubicle of the GOLD unit or on another appropriate loca-
tion near this cubicle.
Connect the modular cable between one of the modular
connections on the cable adapter and one of the modular
connections marked ”Internal EIA-485” on the control
unit inside the GOLD unit. See illustration.
Connect the 3-wire cable between MIRU Control and the
GOLD air handling unit.
A twisted-pair cable is recommended.
Connect the cable to terminals 8 (A), 9 (B) and 10 (GND)
on the control circuit card inside the MIRU Control unit.
Connect conductor A to terminal 4 on the cable adapter,
conductor B to terminal 3 and GND to terminal 1. See
illustration.
If more than one MIRU Control unit are to be wired to
one GOLD unit, see Section 4.1 MIRU Control to GOLD in
separate MIRU Control installation instructions.
GOLD Control unit
Cable adapter
Modular cable
Control circuit card,
MIRU Control
Wiring terminal, cable adapter
1 2 3 4
AB GND AB -- -GND
8910 11 12 13 14 15 16 17 18 19 20 21
STOP LS HS TEMP
INT.BUS(FAN)EXT.BUS(BMS)
TERM.ON OFF

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5. Settings to be made
prior to energizing
MIRUVENT power roof ventilator with EC motor and
integrated control system
Check that the address selector switches are correctly set.
See illustration.
MIRU Control
If the External stop input is not used for controlling fan
operation, a jumper must be connected between terminal
14 and terminal 15.
If a MIRU Control is connected to the GOLD unit, jumper
JP2, ”TERM. ON OFF”, should be set to the ON position.
See illustration.
If several MIRU Control units are connected to the same
GOLD unit, the MIRU Control that is last in the communi-
cation loop should have its jumper JP2, ”TERM. ON OFF”,
set to the ON position. Jumper JP2 of the other MIRU Con-
trol units should be set to the OFF position.
Motor control system, EC motor, MIRUVENT
The address selector
switch must be set to
position 0.
The address selector
switch must be set to
position 1.
LNPE AB GND AB -- -GND
12 453
SUPPLY
COM NO
OP.
689101112131415161718192021X10 X117
COM NO
ALARMINT. BUS STOP LS HS TEMP
EXT.BUS(BMS) INT.BUS(FAN)
X12
TERM.ON OFF
Jumper JP2
Control circuit card, MIRU Control Jumper, if required

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6. Settings, MIRU Control panel
When you energize MIRU Control, a number of settings
must be made on the control panel.
For particulars on how to use the control panel, see the
separate installation instructions for MIRU Control.
Fan size
Set the size/type of MIRUVENT power roof ventilator, as
the equipment MIRU Control is to control.
Read the fan size/type on the product identification plate
of the power roof ventilator.
Set the corresponding size under Base setting. See menu.
Flow unit
Set the required unit for flow measurement (m³/s , l/s or
m³/h). Factory setting: m³/s.
Fan regulation (control)
MIRU Control is factory preset for pressure regulation
(Press. reg. sensor = ON). Pressure regulation requires
connection of a pressure sensor set for pressure regulation
(function selector switch setting = 1)
To select flow regulation, set the Flow sensor to ON and
set Press. reg. sensor to OFF. Flow regulation requires con-
nection of a pressure sensor set for flow regulation (func-
tion selector switch setting = 0)
If pressure regulation is in use, a flow reading can be
obtained. This presupposes that two pressure sensors are
connected and that both Press. reg. sensor setting and
Flow sensor setting = ON.
The pressure is displayed in Pa and the flow according to
the selected flow unit.
Base setting
Size 25-28-3-0
Flow unit m3/s
Flow sensor ON
Press.reg.sensor ON
<Exit Edit>
Menu in the control panel, MIRU Control

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7. Base settings, MIRU Control
connected to the GOLD unit
If one or several MIRU Control units are connected to one
GOLD unit, a number of settings must be entered.
One MIRU Control
If one MIRU Control is connected to the GOLD unit, the
factory preset values apply.
Factory preset values:
Modbus ID = 100
Speed = 38400
Parity = None
Stop bits = 1.
The settings can be checked under Service menu (code
1112) – Communication; see menu.
2 - 10 MIRU Control unitsMax. 10 units MIRU Control
can be connected to one GOLD unit.
If two to ten MIRU Control units are connected to one
GOLD unit, the Modbus ID for each MIRU Control must be
unique.
The MIRU Control corresponding to Fan 1 in the GOLD
unit’s hand-held micro terminal, should have Modbus ID
= 100. Fan 2 should have Modbus ID =101. Fan 3 should
have Modbus ID = 102, etc.
In the GOLD unit’s hand-held micro terminal (under instal-
lation – Functions – MIRU Control – Functions OFF/ON),
set Fan 1 = Active. If several MIRU Control units are con-
nected, these fans should also be set = Active.
SERVICE MENU
Flow/Pressure
Communication
Backlight
<Exit Select>
Menu in the control panel, MIRU Control

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8. Operating mode settings
MIRU Control
Line 2 in the start menu shows the fan’s current operating
mode, for example: STOP or LOW SPEED.
Line 3 in the start menu indicates, by showing various
symbols, how the MIRUVENT power roof ventilator is
controlled, for example via internal time switch or external
supervisory system.
Line 4 in the start menu shows the current functions of
the buttons, for example: Auto, Stop or Menu. "Auto"
means that one press of the button sets the fan to the
auto mode. "Stop" means that the fan is operating and
that one press of the button sets the fan to the stop
mode.
See illustration.
For further information about the control panel, see the
separate installation instructions for the MIRU Control
equipment.
N.B.! The stop input must be connected between terminal
14 and 15 in order to be able to start the fan.
Operating times via the Miru Control panel
Set the current date and time under Time/Date in the main
menu.
Four different time channels can be set under Time chan-
nel.
If the same in-operation times are to apply every day of
the week (Mon.–Sun.), you need only program one time
channel. Various in-operation times during the days of the
week should be programmed in separate time channels
(Mon.–Fri., Sat.–Sun. or Mon., Tues., Wed., etc.)
Set the low speed or high speed under Operation.
Set the start time (hh:mm) under Start time.
Set the stop time (hh:mm) under Stop time.
Indicates that the MIRUVENT is controlled by any of the exter-
nal inputs: stop, low speed or high speed.
Indicates that the MIRUVENT is controlled by the internal time
switch to operate at low speed or high speed.
Indicates that the MIRUVENT is controlled by an external
supervisory system via an external BUS.
MIRU Control Mon. 22:20
LOW SPEED
Stop Menu
Line 2
Line 3
Line 4
MAIN MENU
Time/Date
Flow/Pressure
<Exit Select>
Time/Date
Sun. 1.1.2010
0:13
Time channel
<Exit Edit>
Control panel, MIRU Control
Button

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Operating times via GOLD hand-held micro terminal
This section is only of interest if you are wiring electrical
connections to the GOLD air handling unit.
In the GOLD unit’s hand-held micro terminal (under instal-
lation – Functions – MIRU Control – Functions OFF/ON),
set Fan 1 = Active. If several MIRU Control units are con-
nected, these fans should also be set = Active.
Under Miru Control – Operation, you must select the fol-
lowing for each fan (Fan no.):
- Whether the MIRUVENT-fan is to have the same start
and stop times as the GOLD unit. Parallel start = 1.
- Whether the MIRUVENT-fan is to have the same low
speed and high speed settings as the GOLD unit. Parallel
LS/HS = 1.
- Whether the MIRUVENT should operate together with
the GOLD unit fans to automatically balance the flow.
Balancing = 1.
- Which of the GOLD unit fans will operate to achieve
total flow balance. If SA is selected; the supply airflow in
the GOLD unit will be increased by the corresponding rate.
If EA is selected, the extract airflow in the GOLD unit will
be decreased by the corresponding rate.
Under Miru Control – Time channel, you must select the
following for each fan (MIRU no.):
- Operation/Times for all four channels.
Operation: Low speed or High speed.
Time: If the same in-operation times are to apply every
day of the week (Mon.–Sun.), you need only program
one time channel. Various in-operation times during the
days of the week should be programmed in separate time
channels (Mon.–Fri., Sat.–Sun. or Mon., Tues., Wed., etc.)
Inactive means that the settings for Operation and Time
do not have any effect.
Under Miru Control – Flow/Pressure, you must select the
following for each fan (MIRU no.):
- Which flows or pressure the MIRUVENT fan should
generate while operating in the low speed mode and high
speed mode respectively: All the values can be set, but
only those for the activated function (Flow regulation or
Pressure regulation) will apply.
INSTALLATION
FUNCTIONS
*FUNCTIONS*
TEMPERATURE
FLOW/PRESSURE
FILTERS
OPERATION
HEATING
COOLING
BLUE BOX
HUMIDITY
ReCO2
IQNOMIC PLUS
ALL YEAR COMFORT
OPTIMIZE
MIRU Control
*MIRU Control*
FUNCTION OFF/ON
SETTINGS
Menus, hand-held micro terminal, GOLD

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9. In-operation setting, Miruvent
9.1 AC motor with
integrated frequency inverter, Modbus
Make sure that voltage is being supplied to the safety
switch of the MIRUVENT fan.
Switch on the safety switch of the MIRUVENT fan.
The frequency inverter is now ready to receive control
signals via communication from MIRU Control.
9.2 EC motor, Modbus
Make sure that voltage is being supplied to the safety
switch of the MIRUVENT fan.
Switch on the safety switch of the MIRUVENT fan.
The red and green LED of the motor control system will
flash during start up.
When the red LED stops flashing (only the green LED is
flashing) the fan is ready to be started.
Check that the address selector switch, closest to the LEDs
on the motor control system, are set to 0 resp. 1.
The motor control system is now ready to receive control
signals via communication from MIRU Control.
10. Trouble shooting
10.1 AC motor with
integrated frequency inverter, Modbus
Inside the frequency inverters, there are eight internal
protections that initiate an alarm and stop the power roof
ventilator.
The cause of the alarm can be read on LED 2 inside the
frequency inverter. Remove the screws and bend up the
upper section of the frequency inverter and read the num-
ber of flashes (followed by a longer unlit period).
1 flash Low supply voltage
2 flashes High supply voltage
3 flashes Over current to motor
4 flashes Over temperature in frequency inverter
5 flashes Phase failure on supply voltage, phase
lacking
6 flashes Fluctuating supply voltage between
phases
10 flashes Communication failure between upper and
lower sections
11 flashes Memory circuit failure
These defects can be read in the menu on the MIRU Con-
trol panel, for example No. 1 Fan tripped.
To reset alarms.
Switch off the supply voltage to the AC motor and fre-
quency inverter control system so long that the internal
condensers become de-energised (approx. 90 seconds).
10.2 EC motor, Modbus
There are three defects that cause the motor control
system to initiate an alarm and stop the power roof venti-
lator.
WRONG SPEED:
The LED on the motor control system alternately flashes
red and green.
The fan speed is not in agreement with the setpoint for
the fan motor.
One possible cause could be that a power monitor has
registered max. limit motor output. The motor control
system then decreases the fan motor’s speed by 100 rpm
causing the speed to deviate from setpoint.
Another possible cause could be that the wrong size has
been preset under Base Setting in the MIRU Control.
UNDER VOLTAGE:
The LED on the motor control system shines red.
Low voltage in the intermediate level/rectifier.
MOTOR FAILURE:
The LED on the motor control system shines red.
Communication failure with Hall sensors (= position sen-
sors).
To reset alarms.
Alarms can be reset in two ways:
1. By pressing the red reset button on the motor control
system (to the side of the LEDs) and holding it pressed in
for 1 – 2 seconds.
2. By interrupting the supply voltage to the motor control
system so long that the internal condensers become de-
energised and the red and green LED is first lit and then is
off.

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10.3 MIRU Control
Seven different alarms can be shown on the display screen
on the control panel of the MIRU Control.
No. 1 FAN TRIPPED
The motor control system of the MIRUVENT fan has
tripped and initiated a group alarm. To reset the alarm, see
Section 10.1 on how to reset alarms.
No. 2. FAN COMM. DEFECTIVE
MIRU Control cannot establish correct communication
with the MIRUVENT fan control system.
Check that power is being supplied to the MIRUVENT fan
and that the green LED on the motor control system is
flashing.
To reset the alarm, isolate the power supply for 2 minutes.
No. 3 FLOW SENSOR DEFECTIVE
MIRU Control cannot establish correct communication
with the pressure sensor for flow measurement.
Check that the pressure sensor is set to Address 0, and
that the communication cable is correctly connected. See
Section 4.2.
When everything is correct; the lower LED on the pressure
sensor should be lit with a steady flow and the upper LED
should be flashing.
No. 4 PRESSURE SENSOR DEFECTIVE
MIRU Control cannot establish correct communication
with the pressure sensor for flow regulation.
Check that the pressure sensor is set to Address 1, and
that the communication cable is correctly connected. See
Section 4.2.
When everything is correct; the lower LED on the pressure
sensor should be lit with a steady flow and the upper LED
should be flashing.
No. 5 TEMPERATURE SENSOR DEFECTIVE
The MIRU Control unit cannot establish correct communi-
cation with the outdoor temperature sensor.
Check that the temperature sensor is correctly connected.
See Section 4.3.
No. 6 FLOW/PRESSURE DEV.
The airflow or duct pressure continuously deviates by
+/-20% from the setpoint.
Check that the tubes to the pressure sensor are correctly
connected. See Section 4.2.
To reset alarms.
If any of the above alarms are displayed on the control
panel, and nothing else is specified on the list of alarms
above, reset the alarm by pressing the button under the
RESET text on the MIRU Control panel.