Evikon E2660-CO-CO2 User manual

Dual Gas Transmitter E2660-CO-CO2 belongs to the PluraSens® family of
multifunctional measurement instruments.
The device is intended for simultaneous detection of carbon dioxide and carbon
monoxide. It is a convenient solution for underground parkings
The instrument utilizes electrochemical gas sensors with excellent repeatability,
stability and long lifetime
Two analog outputs and RS485 digital interface with industry standard Modbus
RTU protocol can be used to connect the transmitter to safety or building
automation systems.
Safety requirements
Always adhere to the safety provisions applicable in the country of use.
Do not perform any maintenance operation with the power on. Do not let water or
foreign objects inside the device.
Operating conditions
The device should be used in explosion-safe (non ATEX rated) indoor areas, at the
pressure 0,9...1,1 atm and relative humidity in the range 15...90% without
condensation. (See also Specifications table.)
Avoid strong vibrations, mechanical shock, and the sources of strong
electromagnetic interference.
For best stability the gas detector should be powered permanently.
Installation guidelines
There are no precise rules to follow when installing the gas detectors. The
geometry of the room, detected gases, environment condition should be taken into
account. The device should be mounted on a wall at a place where it is available
for maintenance and repair. Place the transmitter (or remote sensor probes) not
more than 5 m from a possible leakage source and not very close to ventilation
openings or strong air currents. Avoid the areas without air circulation (corners,
niches) as well. Recommended sensor position is vertical pointing downwards.
Carbon monoxide has practically the same density as air. Carbon dioxide is ca. 1.5
times heavier than air.
Mounting and connection
1. Unscrew four lid screws and detach the lid from the device.
2. Attach the device to the wall using four round holes or two key slots. The
mounting dimensions of the device are shown below. (This step may be done after
the step 3, consider your convenience).
3. Use two M16 cable glands to let in the cables of the power supply and of the
external devices. Attach the power cable to the device without turning it on. Using
the connection diagram below, connect the analog outputs and/or digital interface
terminals to the relevant devices according to your tasks.
OUT1
OUT2
0V
A
B
+U
J3
J1 J2
Fieldbus
Controller
Supply
Power
Control LED
Input 1 4-20 mA / 0-10 V
Input 4-20 mA / 0-10 V2
0V / GND
0V
+24V
J1: OUT1 type (open: 4-20 mA; closed: 0-10 V)
J : OUT type2 2 (open: 4-20 mA; closed: 0-10 V)
J : 3 return to facto ry settings
SENSORS L
N90...265 VAC
not in use
Power s upply unit
90...265 VAC
The screwless quick connect spring terminals on the E2660 series devices are
suitable for a wide range of wires with cross-section 0,2...1,5 mm2. We recommend
to strip the wire end by 8...9 mm and tin it, or to use the wire end sleeves.
To connect the wire, insert the wire end into terminal hole. To disconnect, push the
spring loaded terminal lever, pull the wire out, and release the lever.
Use twisted pair cable, e.g. LiYY TP 2×2×0,5 mm2 or CAT 5, to connect the device
to RS485 network. Use one pair for A and B wires and the second pair for common
0 V and power +U wires to connect the transmitter to Fieldbus network. Respect
polarity. Overall length of all connections via RS485 interface should not exceed
1200 m.
The type of each analog output can be independently changed between 4-20 mA
and 0-10 V with jumpers J1 (OUT1) and J2 (OUT2).
With closed jumper the output is 0-10 V, with open jumper the output is 4-20 mA.
By default both outputs OUT1 and OUT2 are assigned to CO and NO2
concentration respectively.
The output assignments and scales can be changed by Modbus commands (see
Annex 1 for more details).
We recommend to set the difference between the upper and bottom limits of the
output scale not narrower than 20% of detection range (for CO detectors the
scales down to 5% of range are allowed). In any case, do not set the output scale
below the tenfold resolution of the device
Note The outputs are not galvanically isolated from 24 V power supply and share
common 0V. Allowed load resistance limits are stated in Specifications table. To
power the instrument from an external 24 VDC source, connect terminals 0V and +U to
the source. If the integrated mains power supply module is used, connect terminals L
and N to the mains.
3. Turn on the power. The sensor heating up takes ca. 60 seconds after switching
on. A LED placed on the PCB of the device allows to control the connection
process. The LED response to different processes is presented in the table below.
Process LED mode
Sensor absence or malfunction Blinking 0.5 Hz (90% off, 10% on)
Modbus response
The signal is modulated with short
on/off pulses, even single Modbus
cycle is traceable
Normal operating Continuous light
4. Make sure that the transmitter is properly fixed, the external devices connected,
power on and control LED is constantly lit. Make certain that the cable glands are
properly tightened to ensure the conformity to IP65 protection class. Place the lid
back and fix it with the screws. The device is ready to use.
It is recommended to keep the transmitter powered constantly, except for periods
of maintenance and calibration, deplacement etc.
Sensor probe handling
The transmitter is available with remote probe (see drawing for dimensions).
The remote probe is connected to the main unit with shielded cable. Default cable
length is 3 m.
The sensor probes are equipped with a hydrophobic microporous PTFE filter to
protect the sensor from dust, dirt and water drops. The filter may be replaced if it
gets strongly contaminated.
To replace the PTFE filter, unscrew the M25 nut and remove the old filter. Place a
new filter into the nut and tighten it again.
NB! Never stab or press the filter near its center where the sensor is located since
this may damage the sensor.
The recommended orientation of sensor probe is vertical with the sensor tip
pointing downwards. This prevents possible accumulation of condensed water on
the sensor protection filter. The horizontal orientation is also suitable. Avoid upward
position of the sensor tip.
Return to default settings
To reset the device’s Slave ID, baudrate and sbit number to factory settings,
proceed as follows:
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
Maintenance
Do not perform any maintenance operation with the power on.
Clean the device with soft damp cloth. Do not use any abrasive cleaning agents.
Do not immerse the device into water or any cleaning media.
Calibration
E2660 series transmitters have been calibrated by Manufacturer with standard gas
mixtures before delivery. Electrochemical gas sensors require field recalibration
every 6 months. Optical sensor may be calibrated every five years, if used under
moderate conditions without strong temperature fluctuations. Please contact your
dealer for more information.
Delivery set
– Transmitter E2660-CO-CO2
– Mounting accessories:
- 4 screws with plastic dowels
- fixing clamp for remote probe versions
36
77
Ø35...36 Ø50
120°
Ø 65 80
32 7
Ø34 max
Hole
35
115
90 65
~140
130
145
30
55
M16
M25
38

Properties of detected gases
Carbon dioxide
Synonyms: Carbonic acid gas, Carbonic anhydride, Carbon (IV) oxide; Dry ice (in
solid state)
Chemical formula CO2
Molar weight 44
Relative gas density (to air) 1.52
Conversion 1 ppm = 1.80 mg/m3
Boiling point Sublimes
Flammability Nonflammable
Odour Odourless
Hazards Dusts of various metals (Mg, Zr, Ti,
Al, Cr, Mn) are ignitable and explosive
when suspended in carbon dioxide.
In concentrations up to 1% (10 000
ppm), it will make some people feel
drowsy and give the lungs a stuffy
feeling. Concentrations of 7% to 10%
(70 000 to 100 000 ppm) may cause
suffocation, even in the presence of
sufficient oxygen, manifesting as
dizziness, headache, visual and
hearing dysfunction, and
unconsciousness within a few
minutes to an hour.
Exposure limits
(Directive 2006/15/EC)
TWA 9000 mg/m3 /5000 ppm
STEL Not specified
Carbon monoxide
Colourless, odourless, and tasteless gas. Highly toxic.
Synonyms: Carbonous oxide, Carbon(II) oxide, Flue gas, Monoxide
Chemical formula CO
Molar weight 28
Relative gas density (to air) 0.97
Conversion* 1 ppm = 1.15 mg/m3
Boiling point −191.5 °C
Low explosive limit (LEL), % vol in air 12.5
Upper explosive limit (UEL), % vol in air 74
Odour Odourless
Hazards Highly toxic. Mild poisoning causes
lightheadedness, confusion,
headache, dizziness, and flu-like
effects. Larger exposures can lead
to toxicity of the CNS and heart, and
death. After acute poisoning, long-
term problems may occur. CO also
have negative effects on a baby if
exposed during pregnancy. Chronic
exposure to low levels can lead to
depression, confusion, and memory
loss.
Exposure limits
(NIOSH)
TWA 40 mg/m3 /35 ppm
IDLH 1380 mg/m3 /1200 ppm
* Calculated for 25°C and 1 atm.
E2660-CO-CO2_UM_EN Rev 28.11.2019
Specifications
Signal update every 1 second
Power supply options 11...30 VDC or 24 VAC
Power consumption < 2 VA
Analog outputs 2 × 4-20 mA / 0-10 V, user settable
Load resistance RL < (Us - 2 V) / 22 mA for 4-20 mA
RL > 250 kOhm for 0-10 V mode:
Digital interface RS485, Modbus RTU protocol; no galvanic isolation
Cable connections screwless spring loaded terminals
Enclosure grey ABS, wall mount, protection class IP65
Dimensions H90 × W145× D55 mm
CE marking according to 2014/30/EU and EN61326-1 requirements
CO CO2
Sensor type electrochemical optical (NDIR)
Detection range 0...300 ppm 0...10 000 ppm
Resolution/Gas unit 1 ppm 1 ppm
Response time T90 < 30s 2-3 minutes
Sensor lifetime > 6 years ca 10 years
Calibration interval 6months up to 5 years
Outputs assignment OUT1 OUT2
2 gas 1 (CO) 2 gas 2 (CO2)
Outputs scale width
> 10 × resolution
Recommended: 20-100% of the detection range
For CO:down to 5-100% of the range is allowed
Operating conditions
-20...+50 °C 0...+50 °C
15...90 %RH non condensing; pressure 0,9...1,1 atm
non ATEXrated areas, non-aggressive atmosphere
Cross-sensitivity hydrogen, acetylene none
RS485 communication parameters
Parameter Permitted values Default
Supported baudrates 1200, 2400, 4800, 9600, 19200, 38400, 57600 9600
Data bits 8 8
Parity none none
Stop bits 1, 2 1
Protocol Modbus RTU
Modbus functions 03 - read multiple registers; 06 - write single register
Error codes 01 - illegal function; 02 - illegal data address;
03 - illegal data value; 04 - slave device failure
(details of last error 04 can be read from register 0x0008)
Warranty
This product is warranted to be free from defects in material and workmanship for a
period of one year from the date of original sale. During this warranty period
Manufacturer will, at its option, either repair or replace product that proves to be
defective. This warranty 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.
Evikon MCI OÜ Teaduspargi 7/9, Tartu [e-mail]
Tel.: [phone] Estonia www.evikon.eu
PluraSens®
Dual Gas Transmitter
E2660-CO-CO2
User manual

E2660_UM_EN Annex 1
E2660 series Modbus RTU Communication Reference
Modbus holding registers
Register addresses are shown 0-based, Addr in hexadecimal, Reg in decimal format.
Modbus holding register numbers MHR are shown in decimal 1-based format, and may be addressed either from 00001 or 40001 base.
Addr
Reg / MHR
RW
Description
Supported values (dec)
Default
0x0001
1 / 40002
R
Product information
2660
0x0002
2 / 40003
R
-
0x0003
3 / 40004
R
0
0x0004
4 / 40005
RW
Slave ID (net address) *
1...247 **
1
0x0005
5 / 40006
RW
Baudrate *
1200, 2400, 4800, 9600, 19200, 38400, 57600
9600
0x0006
6 / 40007
RW
Response delay, ms
1...255
10
0x0007
7 / 40008
RW
Stop bits *
1 – no parity bit, 1 stop bit (default after factory reset)
2 – no parity bit, 2 stop bits
1
0x0008
8 / 40009
R
Last error code
1...255
-
0x0011
17 / 40018
RW
Restarts counter
write ‘42330’ to restart device (no response will follow)
-
0x00A2 162 / 40163 R
Zero adjustment for temperature
data, °C × 100 -32000...+32000 (-320,00...+320,00 °C) 0
0x00A5
165 / 40166
R
Zero adjustment for 1st gas data, ADC
-32000...+32000 ADC units
0
0x00A6 166 / 40167 R Slope adjustment for 1st gas data 1...65535 512
0x00A7 167 / 40168 R
Change rate limit for 1st gas data,
gas unit / s 1...32000, 0 - no limit 0
0x00A8 168 / 40169 R 1st Integrating filter time constant, s 1...32000 (seconds), 0 - no filter 0
0x00C9
201 / 40202
RW
Parameter tied to analog output 1
0 - none
1 - temperature
2 - 1st gas concentration
3 - 2nd gas concentration
9 - forced Modbus control, value set in MHR / 40204
2
0x00CA
202 / 40203
RW
Parameter tied to analog output 2
0 - none
1 - temperature
2 - 1st gas concentration
3 - 2nd gas concentration
9 - forced Modbus control, value set in MHR / 40205
3
0x00CB 203 / 40204 RW Forced value for analog output 1*** 0...1000 (0,0%...100,0% of output scale) 0
0x00CC
204 / 40205
RW
Forced value for analog output 2***
0...1000 (0,0%...100,0% of output scale)
0
* - The new value is applied after restart.
** - Broadcast slave ID 0 can be used to assign a new ID to device with unknown ID. When addressing by ID 0 the device shall be the
only Modbus instrument in the network. The device will not respond to Master command when addressed by ID 0.
*** - This value is dynamic and not kept in EEPROM after restart
RS485 communication interface
Databits: 8
Parity: none
Stop bits: 1 or 2
Protocol: Modbus RTU
Supported Modbus functions:
03 - read multiple registers
06 - write single register
Communication parameters
Parameter Permitted values Default
Supported
baudrates
1200, 2400, 4800, 9600, 19200,
38400, 57600
9600
Data bits 8 8
Parity none none
Stop bits 1, 2 1
Protocol Modbus RTU
Modbus functions 03 - read multiple registers
06 - write single register
Error codes 01 - illegal function
02 - illegal data address
03 - illegal data value
04 - slave device failure (details of last error 04
can be read from register 0x0008)

E2660 series Modbus holding registers (part 2)
Register addresses are shown 0-based, Addr in hexadecimal, Reg in decimal format.
Modbus holding register numbers MHR are shown in decimal 1-based format, and may be addressed either from 00001 or 40001 base.
Addr
Reg / MHR
RW
Description
Supported values (dec)
Default
0x00FF
255 / 40256
RW
Sensor, analog outputs, LED and buzzer
status
bit[0]=0/1 - sensor present/absent, read-only!
bit[1]=0/1 - analog outputs deactivated/activated,
bit[6]=0/1 - current/voltage output detected on output1, read-only!
bit[7]=0/1 - current/voltage output detected on output2, read-only!
bit[8]=0/1 - LED deactivated/activated,
bit[9]=0/1 - buzzer deactivated/activated
-
0x0100
256 / 40257
R
Raw temperature data, °C×100
signed integer, -4000...+8500 (-40,00...+85,00 °C)
0x0101
257 / 40258
R
Raw 1st gas sensor data
ADC data 0...4095
0x0102
258 / 40259
R
Measured temperature, °C×100
signed integer, -4000...+12500 (-40,00...+125,00 °C)
0x0103
259 / 40260
R
1st gas concentration
signed integer, -32000...+32000 (gas units)
0x0105
261 / 40262
RW
0% value for analog output 1
signed integer, -32000...+32000 (gas units)
0
0x0106
262 / 40263
RW
100% value for analog output 1
signed integer, -32000...+32000 (gas units)
1000
0x0107
263 / 40264
RW
0% value for analog output 2
signed integer, -32000...+32000 (gas units)
0
0x0108
264 / 40265
RW
100% value for analog output 2
signed integer, -32000...+32000 (gas units)
1000
0x016D
365 / 40366
R
Zero adjustment for 2nd gas data, ADC
-32000...+32000 ADC units
0
0x016E 366 / 40367 R Slope adjustment for 2nd gas data 1...65535 512
0x016F 367 / 40368 R
Change rate limit for 2nd gas data,
gas unit / s 1...32000, 0 - no limit 0
0x0170 368 / 40369 R 2nd Integrating filter time constant, s 1...32000 (seconds), 0 - no filter 0
0x01C9
457 / 40458
R
Raw 2nd gas sensor data
ADC data 0...4095
0x01CB 459 / 40460 R 2nd gas concentration signed integer, -32000...+32000 (gas units)