Comelec ECRO RV User manual

Technical manual
Ecro RV
CD 908 13720 BELCODENE
Tél.: [phone] Fax : [phone] [email protected] www.ecro.fr
Digital device for the control and monitoring of fume
hoods in laboratories.
• Air control compliant with the EN14175 standard.
• Compact and low cost device.
• High-speed hot wire probe.
• Closed loop control.
• Air speed digital display in m/s.
• Sash window automation available.
• Suitable for every laboratory applications.

VisioLAB
SUMMARY
2..... General technical information ................................................page 4
3..... Characteristics ........................................................................page 4
3.1 .. Electrical characteristics ........................................................page 4
3.2.. Nominal features .....................................................................page 4
3.3.. Velocity operating mode ..........................................................page 5
3.4.. Electrical wiring........................................................................page 8
3.5.. Dimensions ..............................................................................page 9
4..... User instructions and setup ....................................................page 10
4.1 .. Installation and setting of the probe.......................................page 10
4.2.. Probe functioning principle ....................................................page 10
4.3.. Probe functioning conditions .................................................page 10
4.4.. Controller setup ......................................................................page 13
4.4.1 Menu access............................................................................page 14
4.4.2 Pin code modication ..............................................................page 15
4.5.. Settings ....................................................................................page 15
4.6.. Troubleshooting ...................................................................page 19
5..... Additional information .............................................................page 21
2

VisioLAB
Supply 230 V
Display 12
DELs
12
DELs
12
DELs
LCD
2 lines
LCD
2 lines
LCD
2 lines
LCD
2 lines
LCD
2 lines
LCD
2 lines
Double run command relay
Light relay
Alarm relay
Permanent 0-10V
PID 0-10V signal
High sash contact control
Low sash contact control
Hot wire
Measuring cross
Up/down sash contact
Presence sensor control
Supplementary contact control*
Position sensor control **
Communication version
Potentiometer package Cable
Belt
Motorization package for belt
in Included Optional *See the operating instructions manual
**Potentiometer compulsory, must be chosen according to the fumehood (cable or belt)
Potentiometer package Motorization package
ORIGINE
PROGRESSIVE
EXCLUSIVE
ORIGINE
PROGRESSIVE PROGRESSIVE
EXCLUSIVE EXCLUSIVE
ORIGINE
CHARACTERISTICS
ECRO RS ECRO RV ECRO RD
Fumehood with cable fumehood with belt
3
Gamme ECRO

2. GENERAL TECHNICAL INFORMATION
• Supply 230 VAC- 50Hz included
• Data backup in EEPROM in case of power outage
• Visual and audible alarm for a functioning > 40 cm
(EN14175).
• PID control algorithm integrated
• Response time programmable by HMI.
• Terminals separated for an easy and quick connection
• Bus output for the networking with other products.
• Visual and audible alarm when the thresholds are exceeded.
• Alarm contact available
• Access code to parameters reconfigurable by the user
3. CHARACTERISTICS
Supply ............................................................. 230VAC – 50 HZ
Consumption ......................................................................10 VA
Safety class ..............................II (optional ground connection)
Protection......................................................exchangeable fuse
Fuse intensity ..................................................................500Ma
3.1. Electrical Characteristics
INPUTS
Digital inputs ............................................. 4x 0-5V/25mA TOR
OUTPUTS
Inverter control....................................0-2…10V / 0…10V (PID)
Voltage source.................................. 10V / 500mA permanent
Inverter run command contact............................ 5A / 230 VAC
Alarm contact ................................1A/24VDC – 0.5A/230 VAC
Fume hood light contact........................................ 4A /250VAC
Sash lowering and raising contact........................ 4A /250VAC
COMMUNICATION
Bus CAN ................................................................... 250kbits/s
Protocol...........................................................................COMnet
Access process....................................... Station / Multi-Master
Number of units .................................................................. 256.
Maximum length .............................................................. 300m.
Kind of support .......................................................twisted pair.
SERVOMOTEUR
Operating time........................................................................ 8s.
Shaft size ................................... Ø10 à 20mm / □10 à 16mm.
Noise level during operation.............................................45dB.
Absorbed power..............................................................6 W
3.2. Nominal features
Velocity setpoint ................................................0.1 à 0.99 m/s
Alarm response time...………………………………..5 à 30s. Temps
Hot wire response time............ .................................. < 100ms
Sash lowering ......... ....................................................1 à 250s
Operating temperature ...................................... de 15 à 35°C.
4

3.3. Velocity operating mode
The velocity operating mode regulates the front air velocity
(v=0.1 … 0.5m/s) so as to maintain it constant despite the
sash position.
The exhausted air is either regulated by a servomotor (in
centralised exhaust systems ) or by a fan mounted on a roof
and controlled by a frequency inverter.
AIR EXHAUSTED
AIR INTRODUCED
Figure 1 : Velocity operating mode
Figure 2 : Velocity regulation diagram
Air velocity probe :
Nowadays, 3 different kinds of sensors able to measure
velocity can be found on the market.
- Hot wire - hot body - propellers
- The hot-wire solution is obviously the most professional way
to measure accurately and quickly low speeds from 0 to 1 m/s
- The hot-body solution is economic and resistant. Its disadvan-
tages are its accuracy and its reaction time.
- The systems with propellers are used to measure velocities
above 1 m/s.
With the velocity probe developed by Comelec, the least
change in the sash position begets a uctuation of air which
is translated by the probe into an electrical signal 0.5Vdc.
The technology chosen is the hot-wire type. This gives a very
fast response time to the probe in the measuring scale 0…1m/s
(Tr100ms).
This velocity range is particularly adapted to measure the front
velocity of fume hoods and laboratory hoods.
The hot-wire anemometry consists in a measurement at a xed
point. This technology is little intrusive. Its strength lays in its
excellent spatial and temporal resolution. Thus, it makes it the
best technology to study turbulent uctuations.
The usual hot-wire anemometers are made of a thin wire
of a few millimetres long and a diameter from 1 to 10 µm.
Most of the time, the measurements are made in the air (for
velocities from 0.1 m/s to several dozens of m/s)
The installation of the probe onto the top of the fume hood
permits to measure the air velocity.
If the place has been wisely chosen, the air ow measure
corresponds exactly to the air front entering the fume hood.
Control unit ECRO-RV
Display panel VFC11
Low sash contact
3’-sash >500mm contact
Air velocity probe
PIR presence detector
Fume hood light
Motorised damper
5

Motorized damper :
The quantity of air exhausted is controlled by the servomotor.
The fast servomotor (8s for 90°) is mounted directly on the
damper axis show a 8Nm couple (see picture opposite).
The servomotor is controlled directly by the Ecro, this guarantees
a stability and accuracy. For the fumehoods, we use dampers
with diameters of 200 mm or 250 mm.
Below, the mechanical properties of the plastic part (PVC).
The plastic part :
D L L1 L2 L3 L4 L5 H1 H2 H3
125 200 65 135 30 25 155 93,5 140 90
160 220 80 140 30 25 155 111 160 110
200 250 110 140 40 35 180 131 180 130
250 280 110 170 40 35 180 151 203 153
315 350 150 200 40 35 180 188 238 188
REGISTRE A MOTORISE EN PVC M1
L1
L2
L
H1
16
L4
L5
50
H
3
D
50
L3
H2
The motor part.
The servomotor has been
chosen from the proportional
range of the brand Joventa, its
reference is SM1.2.
Applications: this range of elec-
trical servomotors has been
designed for air dampers in
HVAC applications (Heating, Ventilation and Air-Conditioning).
Joventa’s universal adapter is particularly
convenient. It allows a rotation angle limitation with a position
indicator.
Specifications : command …10V cc or 0…20 mA – Running
time independent from the load – Possibility of having 5
servomotors functioning in parallel- Plug-in screw terminal
blocks – Universal adapter for a cylindrical axis 10 to 20 mm ø,
for a square axis 10 to 16 mm on the side.
The axis must be 48 mm long minimum – turning direction
selectable – rotation angle limitable – manual control possible
by disengaging the push-button – 2 auxiliary adjustable po-
tential-free contacts optional (.S) – End auto-stop (overload
protection) – Energy consumption reduced at the limit.
Characteristics :
M1 PVC Damper to motorize
6

7

FUSE
ECRO - RV
SENSOR DISPLAY
UP DOWN LIGHT ALARM FAN1 FAN2
0V Vs HIGH LOW PIR_IN TOR4
0V I
L N G
sash
opening
contact
sash
lowering
Light
contact
Alarm
contact Inverter run
command contacts
Constant source of
supply (10v-500mA)
0-10V
command
signal
sash>400
mm
contact
low sash
contact
Pir
sensor
Obstacle
sensor
IR Power supply
velocity
probe cable
HMI
cable
3.4. Electrical wiring
8

Supply enclosure front view
HMI enclosure front and side view
3.5. Dimensions
Side view
9

4. USER INSTRUCTIONS AND SETUP
CThis leaet is dedicated to the installer in charge of the setup
of the Ecro-RV, a product for laboratories, developed by the
Company COMELEC.
These few pages explain the different steps for an optimal set-
ting of this control device.
4.1 Installation and setting of the probe
Each fume hood is different from an aeraulic point of view.
The manufacturer must show the installer where the hot-wire
speed probe has to be placed so as to get the face air velocity.
If this emplacement is not respected, the speed measured by
the probe will be wrong.
Once the emplacement is determined, a 16.5 mm diameter has
to be made with a drill. The probe is mounted with its clamping
ring (included in the package).
4.2 Probe functioning principles
The depression (PL-PS) generated by air extraction creates a
way through the probe for the air.
The velocity of the air crossing the probe is identical to the one
at the entry of the fume hood.
The air crossing the probe coldens more or less a filament. This
begets a change of temperature.
This change of temperature permits to find the front air velocity.
4.3 Conditions de fonctionnement de la sonde
CAUTION, for an accurate measure of velocity, apart
from the position of the probe, it is important to make sure that:
- the air crossing the probe comes from the laboratory. For
instance, if the top of the fume hood is completely closed, the
measure will be wrong.
- The laboratory is not in high depression (because of a bad
compensation for example), otherwise the measure of velocity
will be wrong.
- No draught disturbs the probe – otherwise, you must protect it.
PL PS
Sonde à
fil chaud
OUTSIDE
Hot-wire
probe
10

FUSE
ECRO - RV
SENSOR DISPLAY
UP DOWN LIGHT ALARM FAN1 FAN2
0V Vs HIGH LOW PIR_IN TOR4
0V I
L N G
ECRO-RV / IMO Jaguar Cub frequency inverter wiring
RJ12/ 6-point DIN cable
To hot-wire probe
8-point RJ45 cable
to display device
User power supply
Inverter
User power supply
Fume hood lightening
Sash high position contact
Electrical wiring Ecro-RV.
11

FUSE
ECRO - RV
SENSOR DISPLAY
UP DOWN LIGHT ALARM FAN1 FAN2
0V Vs HIGH LOW PIR_IN TOR4
0V I
L N G
2 3 4 5 61 24V Y1
Y2 UCOM
ECRO-RV/ Joventa motorised damper
RJ12/ 6-point DIN cable
To hot-wire probe
8-point RJ45 cable
to display device
Fume hood lightening
User power supply
IMO 24VDC supply
Sash high position contact
12

4.4 Controller setup
Elements included for the rst installation:
• Controller Ecro-Rv.
• HCI VFC11
• Face velocity probe.
• RJ12/DIN cable for probe.
• RJ45/RJ45 connection cable.
• Frequency inverter or motorised damper
Optional :
• PIR presence sensor.
• Photoelectric barrier.
• Sash motorisation.
CAUTION : the electrical wiring must be done in accordance to the installation leaet.
When the device is powered, the IMH VFC11 makes a long bip then the LCD display lits.
First, the display shows the version of software and the reference of the product.
Once the main screen is over, the installer will see, on the following screens, the default setting programmed by the manufacturer
-----COMELEC-----
----------
ECRO RV
VERSION 2012 V9
REACTION
SETPOINT = 50ms
VELOCITY
SETPOINT = 0.50
--NORMAL MODE--
----------
VELOCITY MODE
VC = 0.50....VR = 0.45
ALARM
SETPOINT = 30S
13

ENTER YOUR CODE
--CONFIDENTIAL--
CHANGE CODE ?
YES(+) – NO (-)
YOUR NEW CODE
IS : -----
--CORRECT CODE--
---------
ENTER NEW
CODE : -------
4.4.1 Menu access
In order to protect the device against inadvertent disadjustments, the access to the menu IHM VFC11 is protected by a PIN code.
NB: The default PIN code is 0000 but it is possible to modify it.
To have access to the menu, do as follows:
Press button ENTER, the following screen is displayed :
To enter the rst number, press buttons “+”or “-“ then “ENTER”.
Repeat the process for the 3 following numbers.
Once the correct code is registered, the installer can change the access code.
By pressing “-“ the installer has access to the menu.
Use button “+” our “-“ to browse through the menu
4.4.1.1 PIN code modification
If the installer wants to modify the menu access code, he just has to press button “+” to modify the PIN code.
A screen is displayed asking to enter the new PIN code. As soon as the new code is registered it is taken into account by the device.
14

4.4.2 Settings
Setting the velocity setpoint.
The containment change according to the kind of fumehoods
used.
To obtain a secure containment, and by the way an adequate
face velocity, the installer can easily modify the velocity setpoint.
To do so, proceed as follows:
Enter the menu as explained in part 4.41
Once in the menu, enter the sub-menu “choose velocity” by
pressing button “ENTER”
MENU
CHOOSE VELOCITY
Once in the sub-menu “Choose velocity”, press buttons “+” or
“-“ to select the setpoint chosen.
(default value 0.5m/s)
SETTING THE VELOCITY
SETPOINT =....0.50
When the desired velocity setpoint is reached, validate by
pressing button “ENTER”.
The screen appears, conrming the modication of the value.
VELOCITY SETPOINT
MEMORISING
To come back to the first screen, enter the sub-menu “Nor-
mal mode” pressing buttons “+” and “-“ then, press button
“ENTER”.
Setting range for the velocity setpoint :
Vmin : 0.1 m/s
Vmax : 0.99 m/s
Alarm response time setting.
The alarm response time is the period you accept to stay in
default before informing the user. It can be modied by the
installer.
To do so, proceed as follows:
Reach the menu as explained in part 4.4.1
Once in the menu, enter the sub-menu “Choose alarm” by
pressing button “ENTER”.
MENU
CHOOSE ALARM
Once in the menu “choose alarm”, press buttons “+” and “-“
to select the desired length (default value 30s).
ALARM SETPOINT
SETTING =....80 S.
When the desired setpoint is reached, validate by pressing
button “ENTER”.
A screen appears conrming the modication of the value.
ALARM SETPOINT
MEMORISING
To come back to the first screen, enter the sub-menu “Nor-
mal mode” pressing buttons “+” and “-“ then, press button
“ENTER”.
Setting range for the the alarm response time :
min : 1s.
max : 250s
15

Reaction time setting.
The reaction time is the period taken by the device to detect
a default and apply a correction. It can be modied by the
installer.
To do so, proceed a follows :
Enter the menu as explained in part 4.4.1.
Once in the menu, enter the sub-menu “choose reaction” by
pressing the button “ENTER”
MENU
CHOOSE REACTION
Once in the sub-menu “Choose reaction”, press buttons “+”
or “-“ to select the desired length (default setpoint 50ms).
REACTION TIME
SETTING = 50ms.
When the desired length is reached, validate by pressing the
button “ENTER”.
A screen appears conrming the modication of the value.
REACTION TIME
MEMORISATION
To come back to the first screen, enter the sub-menu “Normal
mode” pressing buttons “+” and “-“ then, press button “ENTER”.
Setting range for the reaction time :
min : 1ms
max : 250ms
Sash closing settings.
The ECRO-RV device can include a command mechanism to
pilot the hung-window, associated to a PIR presence detector
and a photoelectric barrier.
The device can not only regulate the face velocity, it can also
pilot the closing of the sash which depends on the presence or
not of persons or obstacles after a period preset.
The delay can be programmed by the installer. To do so,
proceed as follows:
Once in the menu, enter the sub-menu “sash closing delay”
pressing button “ENTER”.
MENU
DELAY
Once in the sub-menu “sash delay”, press buttons “+” or “-“
to dene the time delay desired.
(default value 1 min)
SASH CLOSING DELAY
SETTING = 2min
When the desired delay is reached, validate by pressing
button “ENTER”.
A screen appears conrming the modication of the value.
SASH CLOSING DELAY
MEMORISATION
To come back to the first screen, enter the sub-menu “Nor-
mal mode” pressing buttons “+” and “-“ then, press button
“ENTER”.
16

Setting range for the closing delay:
min : 1min
max : 250min
Hot-wire probe corrective coefficient setting.
The velocity probe consists of a wire heated at a temperature
higher than the ambient temperature.
Over time and depending on the using conditions, it can be
altered (like a light-bulb lament) and can lose accuracy. To
solve this problem, a corrective coefcient can compensate
the probe deterioration.
It can be modied by the installer.
To do so, proceed as follows : enter the menu as explained in
part 4.4.1.
Once in the menu, enter the sub-menu “probe calibration” by
pressing the button “ENTER”.
MENU
PROBE CALIBRATION
Once in the sub-menu “Probe calibration”, press buttons “+”
or “-“to select the coefcient desired.
(Default value : 128).
PROBE CALIBRATION
COEFF°: 128
When the desired value is reached, validate by pressing
button “ENTER”.
A screen appears conrming the modication of the value
PROBE CALIBRATION
MEMORISATION
To come back to the rst screen, enter the sub-menu “Normal
mode” pressing buttons “+” and “-“ then, press button “ENTER
CAUTION : this value is calibrated by a qualied tech-
nician during the factory’s calibration phase.
Buzzer activation .
When the alarm is activated on the control device, the
buzzer is triggered to inform the user there is a default.
The alarm can be activated or deactivated as explained be-
low.
To do so, proceed as follows: enter the menu as explained
in part 4.4.1
Once in the menu, enter the sub-menu “buzzer activation”
pressing button “ENTER”.
BUZZER
ACTIVATION
Once in the sub-menu “Buzzer activation”, press buttons “+”
or “-“ to activate or deactivate the buzzer.
BUZZER
ACTIF
When the status desired is reached, validate pressing button
“ENTER”.
A screen appears conrming the modication of the value
BUZZER
MEMORISATION
To come back to the rst screen, enter the sub-menu “Normal
mode” pressing buttons “+” and “-“ then, press button “ENTER
17

HMI locking.
To prevent the control device from being put into standby
mode, le button ON/OFF can be locked.
To do so, proceed as follows : enter the menu as explained
in part 4.4.1
Once in the menu, enter the sub-menu “ ENABLE ON/OFF”
by pressing button “ENTER” .
ENABLE
ON / OFF
Once in the sub-menu “Enable ON/OFF”, press buttons “+”
or “-“ to enable or disable the buzzer.
BUTTON ON / OFF
ENABLED
When the status desired is found, conrm by pressing the
button “ENTER”.
A screen appears conrming the change of status.
BUTTON ON / OFF
MEMORISATION
To come back to the rst screen, enter the sub-menu “Nor-
mal mode” pressing buttons “+” and “-“ then, press button
“ENTER
VMin tension setting.
The velocity control device delivers a PID type analog signal
varying between 0 and 10 V. However, for some applications,
a minimum tension threshold is necessary to guarantee a
minimum exhaust ow rate. To do so, proceed as follow :
enter the menu as explained in part 4.41.
Once in the menu, enter the sub-menu “Vmin tension setting”
pressing the button “ENTER”.
VMIN TENSION
SETTING
Once in the sub-menu “Vmin tension setting”, press the
button “+” or “-“ to select the threshold.
VMIN TENSION
= 51
When the value desired is reached, validate by pressing the
button “ENTER”.
A screen appears conrming the change of value.
VMIN TENSION
MEMORISATION
To come back to the rst screen, enter the sub-menu “Normal
mode” pressing buttons “+” and “-“ then, press button “ENTER
Setting range for the tension min.:
Vmin-min : 1
Vmin-max : 255
To nd the equivalence in Volt, use the following calculation:
Tension in volt = setpoint * (10/255)
Example : setpoint : 128 -> 128*(10/255)=5 Volts
18

19
4.5 Troubleshooting.
The table above helps the user to troubleshoot possible connectivity problems linked to the control device when the ECRO-RV
is put into service.
Problem : The VFC11 HMI does not light up and does not emit any bip.
Cause : The device is not powered.
Solution : Check both the connection cable between the HMi and the control device, and the230 vac-50Hz mains voltage on the
control device.
Problem : The face velocity remains at 0.00m/s whereas there is suction.
Cause : The probe is not connected to the regulator.
Solution : Check the connection of the probe’s cable.
Problem : The alarm is triggered as soon as it is powered.
Cause : The sash is open above the high safety stop (entry “HIGH” closed)
Alarm response time too short.
Solution : Check the alarm response time in the menu and the high sash contact.
Problem : The motorised damper does not work.
Cause : The 0-10V signal does not reach the control unit.
The motorised damper is not powered.
Solution : Check the wiring and the regulator’s command signal.
Problem : The inverter does not pilot the fan.
Cause : The run command is not given to the fan
The 0-10 V signal does not reach the control unit.
Solution : Check both the run command cable between the regulator and the frequency inverter, and the control signal.
Problem : The fumehood does not light up.
Cause : No tension
The output relay wiring is faulty.
Solution : Check the output relay wiring and the supply wiring.

20
The table above helps the user to troubleshoot possible aeraulic problems when the ECRO-RV is put into service.
Problem : Low air suction
Cause :
The fan is ill-suited
The fan rotates in the wrong direction
There are problems in the aeraulic network.
Solution :
Select a suited fan
Reverse the direction of rotation
Remove the potential obstacles (eg: mechanical damper/air bump)
Problem : The actual velocity is different from the velocity setpoint.
Cause :
The probe is in a zone of excessively turbulent airow.
The hot-wire probe is misplaced.
Bad environmental conditions for the probe.
Solution :
Remove the turbulence affecting the probe.
Do place the probe as indicated by the manufacturer.
Make sure that the probe takes a measurement between the laboratory and the fumehood; otherwise,
cover the probe to protect it.
BEWARE not closed false ceilings
BEWARE the airtightness between the probe and the laboratory.
Problem : Oscillation phenomenon in the device during the regulation “Pumping”
Cause :
The inverter’s deceleration/acceleration ramps are too slow.
The inverter’s frequency min. is too low.
The regulator’s response time is too short.
Solution :
Reduce the inverter’s ramps.
Increase the inverter’s frequency min.
Increase the regulator’s response time.
Problem : The motorised damper works in the wrong direction.
Cause : The damper’s direction of rotation is reversed.
Solution : Reverse the direction of rotation.