Evikon E2618-CO2 User manual

General technical data
Sensor type long-life nondispersive infrared (NDIR) sensor
Detected gase Carbon dioxide CO2
Calibration Carbon dioxide CO2
Sampling method diffusion
Detection range options 400...2000 / 5000 / 10 000 ppm
Accuracy 400...2000 ppm <± (50ppm +2% of measuring value) 400...5000 ppm <± (50ppm +3% of measuring value)
400...10000 ppm <± (100ppm +5% of measuring value)
Resolution 1 ppm
Gas unit ppm
Signal update every 15 seconds
Response time ~60 seconds
Self-diagnostics full functionality check at start-up
Power supply 11...30 VDC,
Power consumption < 2 W
Analog outputs 2 × 4-20 mA / 0-10 V, user settable, freely configurable
Digital interface RS485, Modbus RTU protocol
no galvanic isolation, common-mode voltage -7...+12 V,
Cable connections screwless spring loaded terminals
Enclosure grey ABS, wall mount, protection class IP65
Dimensions H82 × W80 × D55 mm
Operating environment industrial indoor and outdoor locations
Operating conditions -40...+60 °C, 0...95 %RH, 80-120 kPa
Maintenance interval up to 5 years depending on sensor type
Sensor lifetime >15 years
CE markin
g
meets 2014/30/EU and EN61326-1re
q
uirements
E2618-CO2_UM_EN Rev 09.05.2016
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-illegalfunction
02- illegaldata address
03- illegaldata value
04- slave device failure
(details of last error 04 can beread from register 0x0008)
Evikon MCI OÜ Riia 185, Tartu [email protected]
Tel.: [phone] Estonia www.evikon.eu
Carbon dioxide transmitter
E2618-CO2
User manual

Carbon dioxide transmitter E2618-CO2 is a member of new PluraSens® family of
multifunctional measurement instruments. Applications include HVAC and air
quality control in public, office and industrial buildings, greenhouses, underground
parkings, and other confined spaces, where potentially toxic concentration of
carbon dioxide can accumulate.
The instrument utilises digital fully calibrated and temperature compensated optical
(NDIR technology) gas sensor with excellent repeatability, stability and long
lifetime. The transmitteris supplied either in duct-mount or wall-mount version. The
wall mount version of the transmitter is available with remote probe. The remote
probe is connected to the main unit with shielded cable. The connection cable
length options are 2.5 m or 5 m.
Two freely configurable 4-20 mA or 0-10 V analog outputs can be used to connect
the transmitter to secondary instruments. RS485 interface with industry-standard
Modbus RTU protocol allows direct Fieldbusnetworking of the transmitter.
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,
without aggressive gases in the atmosphere. Avoid electrostatic charging of the
transmitter. See Specifications table for moreinformation.
Installation and connection
1. Duct mount version: Connect the sensor probe to the device main unit. Make
sure that the connections are tightened properly.
Cut a 30 mm diameter hole in the air duct at the chosen mounting place. Place the
rubber flange in the hole and fix it with three self-tapping screws. Pass the sensor
probe through the flange and adjust it to the appropriate depth. Unscrew four lid
screws and detach the lid from the instrument.
Wall mount version: Unscrew four lid screws and detach the lid from the
instrument. Fix the transmitter through mounting holes by screws.
The transmitter should be located 60...80 cm from the floor to control leakages or
in the breathing zone (1,2...1.5 m from the floor) for air quality control. Locate your
device away from ventilation holes or dead-air spaces such as corners. The
recommended orientation of sensor probe is vertical with the sensor tip pointing
downwards. Coverage area for each transmitter is 500...1000 m2(12...18 m
radius).
2. Plug the power cable and connectthe analog outputs and/or digital interface
terminals to the relevant devices according to the connection diagram.
Make certain that the cable gland is properly tightened to ensure the conformity to
IP65 protection class.
The screwless quick connect spring terminals on the E2618 series devices are
suitable for a wide range of wires with cross-section 0,2...1,5 mm2. The
recommended wire stripping length is 8...9 mm. Push the spring loaded terminal
lever, insert the wireend into terminal hole and releasethe lever.
Use twisted pair cable, e.g. LiYY TP 2×2×0,5 mm2or 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.
Place the lid back and tighten itwith the four screws.
Note Avoid exposing the sensor to any mechanical stress during installation or
operation sinse this may damage the device and lead to relevant measurement
errors.
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 0-10V, with 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 wich may be connected to any of the
outputs.
The output assignments and scales can bechanged by Modbus commands.
Emergency mode
The current outputs ofthe transmitter may be programmed via Modbus commands
to signal if the connection with the sensor is lost. The signal maybe set to 3,8 mA
or 21,5 mA. See the table of Modbus registers for more information.
Return to default settings
To reset the device’s Slave ID, baudrate andsbit 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
Calibration
Two optical sensor options are available.
Type A double-beam sensor has a built-in reference sample for autocalibration.
Manual calibration by fresh air should beperformed once in 5 years.
Type B sensor performs autocalibration by settling the minimal CO2concentration
to 400 ppm. To use this type it is required that CO2 level decreases to fresh air
level at least once a week. Transmitters with B-type sensors should not be used in
areas with constantly high CO2 level (greenhouses,hospitals etc).
Delivery set
– Carbon dioxide transmitter E2618-CO2 or E2618-CO2-DM
– Mounting accessories:
4 screws with plastic dowels for wall mount version
rubber flange with 3 self-tapping screws for duct mount version.
fixing clamp for remote probe versions
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.
4-20 mA/ 0-10 V
4-20 mA/ 0-10 V
0V / GND
0V
Controller
Power Supply
Input 1
Input 2 OUT1
OUT2
0V
A
BRS485
+U
J1 J2
Fieldbus
Sensor module
+12 V
J3
Dimensions of the E2618-CO2 wall-mount version and the remote probe
Dimensions of the E2618-CO2 duct mount version
Ø28
55
80
152
82
80
Ø28

E2618 series 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 Hardware version -
0x0002 2 / 40003 R Software version -
0x0003 3 / 40004 R Product serial number 1...65535 -
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 10...255 10
0x0007 7 / 40008 RW Stop bits * 1, 2 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) -
0x0091 145 / 40146 RW Heater voltage pulse duration, ms 0...1000 ms 0
0x0092 146 / 40147 RW Sensor voltage pulse delay, ms 0...995 ms (values 0...4 reserved to set sensor type) 0
0x0093 147 / 40148 RW Sensor type specific parameter 0...65535 100
0x0094 148 / 40149 RW Sensor type specific parameter 0...65535 100
0x0095 149 / 40150 RW Sensor type specific parameter -32767...+32767 32000
0x0096 150 / 40151 RW Sensor type specific parameter -32767...+32767 100
0x0097 151 / 40152 R Sensor type code 0...65535 0
0x0098 152 / 40153 R Output units code 0 - ppm, 1 - ‰, 2 - % 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

E2618 series Modbus holding registers (continued)
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.
0x00A2 162 / 40163 RW Zero adjustment for temperature -32000...+32000 (-320,00...+320,00 °C) 0
0x00A5 165 / 40166 RW Zero adjustment for gas data, ADC -32000...+32000 ADC units 0
0x00A6 166 / 40167 RW Slope adjustment for gas data 1...65535 512
0x00A7 167 / 40168 RW Change rate limit for gas data, 1...32000, 0 - no limit 0
0x00A8 168 / 40169 RW Integrating filter time constant, s 1...32000 (seconds), 0 - no filter 0
0x00C9 201 / 40202 RW Parameter tiedto analog output 1
0-none
1- temperature
2- gas concentration
9- forced Modbus control, value setin MHR / 40204
2
0x00CA 202 / 40203 RW Parameter tied to analog output 2
0-none
1- temperature
2- gas concentration
9- forced Modbus control, value setin MHR / 40205
2
0x00CB 203 / 40204 RW Forced value for analog output 1*** 0...1000 (0,0%...100,0% of outputscale) 0
0x00CC 204 / 40205 RW Forced value for analog output 2*** 0...1000 (0,0%...100,0%of output scale) 0
0x00FF 255 / 40256 RW Sensor and analog outputs status
bit[0]=0/1 - sensor present/absent, read-only!
bit[1]=0/1 - analog outputs deactivated/activated,
bit[2]= 0/1 - in case of sensor absent, turn signaling off/on analog output1,
bit[3]=0/1 - in case of sensor absent, turn on signaling with low current/high current
on analog output1; if bit[2]==0 this bit will be ignored,
bit[4]=0/1 - in case of sensor absent, turn signaling off/on analog output2
bit[5]=0/1 - in case of sensor absent, turn on signaling with low current/high current
on analog output2; if bit[4]==0 this bit will be ignored,
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,
Note bits [8] and [9] arealways 0 for E2618 series
62d
0x0100 256 / 40257 R Raw temperature data, °C×100 signed integer, -4000...+8500 (-40,00...+85,00 °C) -
0x0101 257 / 40258 R Raw 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 Gas concentration, ppm / ‰ signed integer, -32000...+32000 (ppm / ‰) -
0x0105 261 / 40262 RW 0% value for analog output 1 signed integer, -32000...+32000 (ppm / ‰) 0
0x0106 262 / 40263 RW 100% value for analog output 1 signed integer, -32000...+32000 (ppm / ‰) 1000
0x0107 263 / 40264 RW 0% value for analog output 2 signed integer, -32000...+32000 (ppm / ‰) 0
0x0108 264 / 40265 RW 100% value for analog output 2 signed integer, -32000...+32000 (ppm / ‰) 1000
* - 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