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