Evikon E2611-LEL User manual

Combustible Gases Detector-Transmitter E2611-LEL is fintended for early
detection of leakages or accumulation of light hydrocarbon gases (acetylene,
methane, propane, butane) and hydrogen.
The instrument is based on fully calibrated and temperature compensated
semiconductor metal-oxide (MOS) gas sensor ith high repeatability, stability and
long lifetime. Pellistor (catalytic bead) sensor is available as an option.
E2611 series devices provide t o independent analog outputs OUT1 and OUT2,
user-selectable to 4-20 mA or 0-10 V, proportional either to gas concentration or
temperature. RS485 Modbus RTU digital communication interface allo s easy
instrument configuration and integration into various automation systems. T o
relays RE1 and RE2 ith closing contacts can be used to s itch 24 V or 230 V
po ered alarm sirens, ventilation fans, shut-off valves or other actuators.
Safety requirements
Al ays adhere to the safety provisions applicable in the country of use. Do not
perform any maintenance operation ith the po er on. Do not let ater or foreign
objects inside the device.
Operating con itions
•The device should be used in explosion-safe (non ATEX -rated) indoor areas at
the atmospheric pressure ±10%, <95 %RH, ithout condensation, and temperature
ithin the range -30...+70 °C for MOS-type devices / -20...+60 °C for pellistor type.
•Metal-oxide and pellistor sensors cannot properly operate in a zero or lo oxygen
content atmosphere. Normal ambient oxygen concentration is recommended.
•Avoid exposure to highly corrosive gases (H2S, SO2, HCl, Cl2 etc), and volatile
silicone containing materials.
•Avoid mechanical shock or strong vibrations.
•Avoid sources of electromagnetic interference
Installation an connections
The gas detector should be mounted on a all at a place locatedas close as
possible to a possible gas leakage source and not very close to ventilation
openings, ith the sensor pointing do n ards. Avoid the areas ithout air
circulation (corners, niches) as ell. To detect gases lighter than air (methane,
hydrogen), install the sensor higher than potential leakage/generation source or
near the ceiling. To detect propane and butane (1.55 and 2.0 of air density
respectively), it is recommended to place the sensor lo er than potential gas
sourse. Take into consideraton the temperature of the detected gas, the geometry
of the room under investigation, the direction and speed of air currentsThe device
should be available for maintenance and repair.
To install and connect the device, proceed as follo s:
1. Detach the base of the enclosure by gently pulling along four guiding pins.
2. Attach the base to the all ith t o scre s. (see dimensional dra ing belo ).
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3. Connect po er supply and external devices to the terminal blocks on the PCB
according to the connection diagram belo .
Input 1 4-20 mA / 0-10 V
Input 2 4-20 mA / 0-10 V
0V / GND
Controller OUT1
OUT2
0V
A
RS485
+U = 11...30 VDC
L
N90...265 VAC
RE1
RE2
Fieldbus
S
PSU 24 VDC
+
-
J1 J2
230 VAC
J3
Control LED
To po er the instrument from an external 24 VDC source, connect terminals 0 V
and +U to the source. If an integrated mains po er supply module is used, connect
terminals L and N to the mains.
NB! If the instrument is po ered from mains, connect to 0 V and +U terminals only
light external loads, hich consume less than 30 mA in total, as the integrated
mains supply module capacity is limited.
To use analog outputs, connect the terminals OUT1 and/or OUT2 and 0 V to the
input of the secondary instrument (indicator or controller).
NB! The outputs are not galvanically isolated from 24 V po er supply and share
common 0 V. Allo ed load resistance limits are stated in Specifications table.
The type of each analog output can be independently changed bet een 4-20 mA
and 0-10 V ith jumpers J1 (OUT1) and J2 (OUT2).
With closed jumper the output is 0-10 V, ith open jumper the output is 4-20 mA. By
default both outputs OUT1 and OUT2 are assigned to gas concentration. The
device has built-in temperature sensor hich may be tied to any of the outputs. The
output assignments and scales can be changed by Modbus commands.
We recommend to set the difference bet een the upper and bottom limits of the
output scale not narro er than 20% of detection range. In any case, do not set the
output scale belo the tenfold resolution of the device.
To use relay outputs, connect the chosen actuators to the relay terminals RE1
and/or RE2.
NB! Actuator short-circuits shall be avoided, to protect the instrument relays use
external fuses or safety s itches.
4. Turn on the po er. It may take up to five minutes after s itching on for the
sensor to stabilize. During this period relays, analog outputs and Modbus interface
are off. A LED placed on the PCB of the device allo s to control the connection
process. The LED response to different processes is presented in the table belo .
Process LED mo e
Sensor heating period Blinking 0.5 Hz (50% on, 50% off)
Sensor absence or malfunction Blinking 0.5Hz (90% off, 10% on)
Relay 1 turned on Blinking 1 Hz (50% on, 50% off)
Relay 2 turned on Blinking 2 Hz (50% on, 50% off)
Modbus response The signal is modulated ith short onoff
pulses, even single Modbus cycle is
traceable*
Normal measurement Continuous light
* Pulse corresponding to Modbus response is visible only hen diode light is on
5. Push the enclosure to the base.
Operation
For best stability the gas detector should be po ered permanently. If the instrument
is left for a long time in unpo ered state, then after initial po er-on the metal-oxide
gas sensor needs some time to heat up and burn adsorbed contaminants. So for
first tens of seconds of fe minutes an alarm activation may be possible. After this
heating-up period the instrument turns into normal mode.
When the concentration of the detected gas reaches the LOW alarm level, the
control LED starts blinking and the buzzer starts beeping ith 1 Hz frequency.
When the HI alarm level is reached, the frequency of blinking/beeping is 2 Hz. The
alarm signal turns off automatically, if gas concentration decreases to 80% of the
alarm setpoint.
Configuring
Gas detector E2611 shares all functionalities of the PluraSens® multifunctional
transmitter platform. The features and options include:
- digital output change rate limiting filter
- digital integrating (averaging) filter
- temperature measurement channel ith internal sensor
- free assignment of each analog output to chosen parameter
- flexible setting of analog output scales for each output
- output shift and slope adjustment for calibration
- free assignment of each of t o relays to chosen parameter
- several relay control logic modes (HI or LO ith hysteresis, U or П)
- s itch delays and minimum on/off state durations for each relay
- Modbus controlled forced state option for analog outputs and relays.
E2611 can be configured through its RS485 interface by Modbus RTU commands.
A standard configuration kit includes Model E1087 USB-RS485 converter and
E26XX Configurator soft are. Please contact your seller or manufacturer for more
information.
Return to efault settings
To reset the device’s Slave ID, baudrate and sbit number to factory settings,
proceed as follo s:
1. De-energize the device 2. Connect the J3 jumper
3. Turn on the device 4. De-energize the device
5. Disconnect the J3 jumper 6. Turn on the device
Calibration
E2611-LPG has been calibrated by Manufacturer ith standard gas mixtures before
delivery. The semiconductor gas sensor exhibits high stability and > 5 years
lifetime. Ho ever, as the gas sensor is directly exposed to environment, the
instrument requires at least annual field recalibration ith a portable calibration kit.
The catalytic sensor is more sensitive to the environment and requires calibration
every 3...6 months.
The calibration should be performed by trained specialist. Please contact your
dealer for more information.
Warranty
This product is arranted to be free from defects in material and orkmanship for a
period of one year from the date of original sale. During this arranty period
Manufacturer ill, at its option, either repair or replace product that proves to be
defective. This arranty is void if the product has been operated in conditions
outside ranges specified by Manufacturer or damaged by customer error or
negligence or if there has been an unauthorized modification.
Delivery set
–Combustible Gases Detector-Transmitter E2611-LEL
– Mounting accessories: 2 scre s and 2 plastic do el plugs

RS485 communication interface
Databits: 8
Parity: none
Stop bits: 1 or 2
Supported Modbus functions:
03 - read multiple registers
06 - rite single register
Modbus registers (0-based, decimal format)
Reg Description Supported values
1 Hard are version read only
2 Soft are version read only
3 Product serial number read only
4 Slave ID (net ork address)* 1...247, default 1
5 Baudrate* 1200...57600 baud, default 9600
6 Response delay, ms 1...255 ms, default 10
7 Stop bits* 1 / 2, default 1
17 Restart rite ‘42330’ for soft restart
162 Temperature shift adjustment -32000...+32000 T units (0,01 °C)
165 Gas channel shift adjustment -32000...+32000 gas units, default 0
166 Gas channel slope adjustment 1...65535, default 512
167 Output change rate limit 1...32000 gas units/s, 0=no limit
168 Integrating filter time constant 1...32000 s, 0=no, integrating filter
201 Parameter assigned to OUT1 0=none, 1=T, 2=gas, 9=forced by 203
202 Parameter assigned to OUT2 0=none, 1=T, 2=gas, 9=forced by 204
203 Forced value for OUT1 0...1000 (0.0...100.0% of full scale)
204 Forced value for OUT2 0...1000 (0.0...100.0% of full scale)
211 Parameter assigned to RE1 0=none, 1=T, 2=gas, 9=forced by 213
212 Parameter assigned to RE2 0=none, 1=T, 2=gas, 9=forced by 214
213 Forced state for RE1 0=off, 1=on (relay control by Modbus)
214 Forced state for RE2 0=off, 1=on (relay control by Modbus)
215 S itch delay for RE1 0...1000 s, default 0
216 S itch delay for RE2 0...1000 s, default 0
217 Min on/off time for RE1 0...1000 s, default 0
218 Min on/off time for RE2 0...1000 s, default 0
219 Control logic for relay RE1 0:_, 1:_↓↑

P, 2:

P↑↓_, 3:_↑

P↓_,
4:

P↓_↑

P
220 Control logic for relay RE2 0:_, 1:_↓↑

P, 2:

P↑↓_, 3:_↑

P↓_,
4:

P↓_↑

P
221 LOW setpoint for relay RE1 -32000...+32000, gas or T units
222 HIGH setpoint for relay RE1 -32000...+32000, gas or T units
223 LOW setpoint for relay RE2 -32000...+32000, gas or T units
224 HIGH setpoint for relay RE2 -32000...+32000, gas or T units
258 Measured temperature -4000...+12500 T units (0,01 °C)
259 Gas concentration 0...65535 gas units
261 0% value of OUT1 -32000...+32000 gas units / integer °C
262 100% value of OUT1 -32000...+32000 gas units / integer °C
263 0% value of OUT2 -32000...+32000 gas units / integer °C
264 100% value of OUT2 -32000...+32000 gas units / integer °C
* - the ne value is applied after restart
Broadcast ID=0 may be used to assign a ne ID to device ith unkno n ID
E2611-LEL_UM_EN Rev 25.07.2019
Specifications
Detected gases Acetylene, Butane, Hydrogen, Methane, Propane
Default calibration Methane CH4
Sampling method Diffusion
Sensor type Metal oxide semiconductor Pellistor (catalytic)
Detection range Up to 100% LEL
Resolution 0,1% LEL 1% LEL
Response time ~ 60 seconds ~ 10 seconds
Sensor lifetime > 5 years > 2 years
Calibration interval 12 months 3...6 months
Operating conditions -30...+70 °C -20...+60°C
<95 %RH, ithout condensation, non-ATEX
Normal ambient oxygen level
Avoid strong mechanical shock, vibrations or EMI
Avoid exposure to corrosive gases or silicone
containing products
Warm-up time up to 1 minute, depending on unpo ered period and
atmosphere
Po er supply 11...30 VDC/24 VAC
ith integrated mains supply module 90...265 VAC
Po er consumption < 2 VA
Analog outputs 2 × 4-20 mA or 0-10 V
Load resistance for 4-20 mA output mode: RL < (Us - 2V) / 22 mA
for 0-10 V output mode: RL > 250 kOhm
Digital interface RS485, Modbus RTU protocol
Relay outputs 2 × SPST, max 5 A, 30 VDC / 250 VAC
Alarm Buzzer 85 dB
Enclosure ABS plastic ith ventilation slots, all-mount, IP20
Dimensions 85 × 85 × 37 mm
Electromagnetic
compatibility
according to 2014/30/EU, 2014/35/EU and EN61321-1
standard requirements
actory settings
Gas unit 0,1 % LEL
OUT1 assignment and scale 2: gas, 0 - 100% LEL
OUT2 assignment and scale 2: gas, 0 - 100% LEL
RE1 assignment and logic 2: gas, 1: on at high values
RE1 HIGH setpoint (set) 20% LEL
RE1 LOW setpoint (release) 16% LEL
RE2 assignment and logic 2: gas, 1: on at high values
RE2 HIGH setpoint (set) 50% LEL
RE2 LOW setpoint (release) 40% LEL
Evikon MCI OÜ Teaduspargi 7, Tartu [e-mail]
Tel. [phone] Estonia .evikon.eu
PluraSens®
Combustible Gases
Detector-Transmitter
E2611-LEL
User Manual