Evikon E2658-CO User manual

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
Conversion of ppm to mg/m3 is calculated for 25°C and 1 atm.
Installation guidelines
(See Installation and connections section for general information.)
Carbon monoxide has practically the same density as air and spreads evenly in the
room. Install the sensor in a proximity to possible leakage or generation source, taking
into consideration the temperature of the gas, the air currents in the room etc.
Calibration
E2658-CO detector-transmitters have been calibrated by Manufacturer with
standard gas mixtures before delivery. Provided that the sensor is used under
moderate conditions, field recalibration is recommended every 6 months. Please
contact your dealer for more information.
E2658-CO_UM_EN Rev 04.07.2019
Specifications
Sensor type electrochemical cell
Sampling method diffusion
Detection range 0...1000 ppm
Maximum overload 2000 ppm
Resolution / digital unit 1 ppm
Response time T90 < 30 s
Repeatability < ± 5%
Sensor lifetime < 6 years
Calibration interval 6 months
Signal update every 1 second
Power supply options 11...30 VDC, 24 VAC
or 90...265 VAC (with mains power unit)
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
Outputs assignment OUT1 2 gas; OUT2 2 gas
Enclosure Grey die-cast aluminium, wall mount, IP66
Cable glands M25 for SWA cable or steel conduit Ø10...17 mm
Dimensions H120 × W125 × D57 mm
Protection flameproof, ATEX: II 2 GD, Ex ed IIC T4 Gb
ATEX Approvals
Enclosure:
ATEX / IECEx DEMKO 13 ATEX 1327771U
II 2 G Ex c IIC Gb II 2 D Ex tb IIIC Db IP66
Glands:
ATEX / IECEx II2G Ex e II IP68
IBExU08ATEX 1063 X Ex II 1D Ex tD A20 IP 6x Ex
CE marking
Flameproofepd to IEC EN 60079-1
Increased safety to IEC EN 60079-7
EMC Emissions to EN 61000-6-3, EN 61326-1
EMC Immunity to EN 61000-6-1, EN 61000-6-2
Operating conditions
-20...+50 °C, 0...90 %RH, atmospheric pressure ±10%
Explosion-safe zones and ATEX Zones 2 and 22,
non-aggressive atmosphere
NOTE The sensor exhibits considerable sensitivity to
acetylene, etylene, hydrogen and nitric oxide
Relay option
Output relays 2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
Default alarm set-points RE1 (LOW): set 25; release 20 ppm
RE2 (HIGH): set 35; release 28 ppm
Evikon MCI OÜ Teaduspargi 7, Tartu [e-mail]
Tel. [phone] Estonia www.evikon.eu
PluraSens®
Flame Proof
Carbon Monoxide Detector-Transmitter
E2658-CO
User Manual

E2658 is a series of flame proof gas detectors-transmitters intended for operation in
safe zones and ATEX Zones 2 and 22.
E2658 series devices are based on PluraSens® multifunctional platform and provide all
its features.
E2658 series has two independent analog outputs UT1 and UT2, user-selectable to
4-20 mA or 0-10 V, proportional either to gas concentration or temperature. RS485
Modbus RTU digital communication interface allows easy instrument configuration and
integration into various automation systems.
An option with relay outputs is available. Two relays RE1 and RE2 with closing contacts
can be used to switch 24 V or 230 V powered alarm sirens, ventilation fans, shut-off
valves or other actuators.
The instruments utilise gas sensors of various types with excellent repeatability, stability
and long lifetime
Please read this manual carefully before operating
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.
Make sure that installation and maintenance are performed in the explosion safe
atmosphere.
The device should be properly earthed
It is crucial to tighten properly all the thread connections (screws, cable glands)
Use ATEX certified armoured cables or cable conduits
Avoid strong vibration and mechanical shock
Avoid direct sunlight
Avoid sources of strong electromagnetic interference
Do not use the device in the carbon disulfide atmosphere, since it may damage the
sealing gasket
Although E2658 series devises are suitable for use in the presence of flammable
dust, special precautions should be taken when operating in a dusty environment.
Dust may block the porous filter of the sensor and compromise results of
measurement. The detector should be inspected regularly if used in a dusty
atmosphere.
Choosing location
There are no precise rules or standards to follow when installing the gas detectors. The
following points must be taken into account:
safety: see Safety requirements section,
application (air quality control or leakage detection),
properties of the space under investigation (room geometry, direction and velocity of
air flows etc),
detected gas (relative density to air, whether the gas is flammable, or toxiс, or oxygen
displacing),
safety: strong vibrations, mechanical shock, and the sources of strong
electromagnetic interference should be avoided,
the device should be accessible for maintenance and repair.
For early leakage detection install the sensor as close as possible to the potential
leakage sources (flanges, valves, pressure reducers, pumps, etc), taking into
consideration other points listed above. For general area monitoring without definite
leakage sources, the detectors should be distributed evenly in the room. For personal
safety control the detectors are installed in the breathing zone (at the height of the head
of people or animals). Recommended sensor position is vertical, pointing downwards.
See Installation guidelines section for more information.
Installation and connections
Never perform installation or maintenance in explosive atmosphere
The device is fixed on the wall using two holes located outside the sealed area of the
device (see dimensional drawing below).
M25 (sensor)
M25 (cable entry)
125
8
0
fixing hole (Ø 5mm)
fixing hole (Ø 5mm)
1. Unscrew four lid screws and detach the lid from the detector.
2. Fix the detector on the wall and earth the enclosure using earthing terminal on the
side of the device. (This step may be done after the step 3, consider your convenience).
3. Use M25 cable glands to pass the cables of the power supply and of the external
devices. Plug the power cable and connect the analog/relay outputs and/or digital
interface terminals to the relevant devices according to the relevant connection
diagram.
Use ATEX certified armoured cables or cable conduits
The screwless quick connect spring terminals on the E2658 series devices are
suitable for a wide range of wires with cross-section 0,5...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. verall 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 ( UT1) and J2 ( UT2).
With closed jumper the output is 0-10 V, with open jumper the output is 4-20 mA.
By default both outputs UT1 and UT2 are assigned to gas concentration. The
device has built-in temperature sensor which may be tied to any of the outputs.
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.
Note Actuator short-circuits should be avoided, to protect the instrument relays use
external fuses or safety switches.
The output assignments and scales can be changed by Modbus commands. (See
Annex 1 for more information.)
We recommend to set the difference between the upper and bottom limits of the
output scale not narrower than 20% of detection range (for C 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.
4. Turn on the power. The sensor heating up may take up to five minutes 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 heating period Blinking 0.5 Hz (50% on, 50% off)
Sensor absence or malfunction Blinking 0.5 Hz (90% off, 10% on)
Relay1 turned on Blinking 1 Hz (50% on, 50% off)
Relay2 turned on Blinking 2 Hz (50% on, 50% off)
Modbus response The signal is modulated with short on-off pulses,
even single Modbus cycle is traceable*
Normal measurement Continuous light
5. Make sure that the detector is properly fixed, the external devices connected,
power on and control LED is constantly lit. Place the lid back and fix it with the
screws.
Make certain that the cable gland and the screws fixing the front lid are
properly tightened to ensure the conformity to IP66 protection class. and
ATEX requirements
Make certain than the device is properly earthed.
The device is ready to use.
It is recommended to keep the device powered constantly, except for periods of
maintenance and calibration, deplacement etc.
4-20 mA / 0 -10
4-20 mA / 0 -10
0 / GN D
OUT1
OUT2
0
A
BRS485
+U = 11...30 D C
RE 1
RE2
Fieldb us
24 DC
S
N
L90...265 AC
J 3
Control LED
J1 J 2
J1: OUT1 type (open: 4-20 mA; closed: 0-10 )
J : OUT type2 2 (open: 4-20 mA; closed: 0-10 )
J : 3 return to fact ory settings
E2658 version with relays
OUT1
OUT2
0
A
B
+U
J3
J1 J2
Fieldbus
Controller
Supply
Power
Control LED
Input 1 4-20 mA / 0-10
Input 4-20 mA / 0-10 2
0 / GND
0
+24
SENSOR
E2658 basic version

Configuring
Detectors-transmitters E2658 share 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 with 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 two relays to chosen parameter
- several relay control logic modes (HI or L with hysteresis, U or П)
- switch delays and minimum on/off state durations for each relay
- Modbus controlled forced state option for analog outputs and relays.
E2658 can be configured through its RS485 interface by Modbus RTU commands. A
standard configuration kit includes a USB-EIA485 converter and a software pack.
Please contact your Seller or the Manufacturer for more information.
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
RS485 communication interface
See Annex 1
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.
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 unauthorised modification.
NOTES

E2658_UM_EN. Annex 1. E2658 series Modbus RTU Communication Reference
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- illegaldatavalue
04 - slave device failure (details of last error04
can beread fromregister 0x0008)
E2658 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 Holding register RW Description Supported values (dec) Default
0x0001 1 R Hardware version -
0x0002 2 R Software version -
0x0003 3 R Product serial number 1...65535 -
0x0004 4 RW Slave ID (net address) * 1...247 ** 1
0x0005 5 RW Baudrate * 1200, 2400, 4800, 9600, 19200, 38400, 57600 9600
0x0006 6 RW Response delay, ms 1...255 10
0x0007 7 RW Stop bits *
1: no parity bit, 1 stop bit (default after factory reset)
2: no parity bit, 2 stop bits
3: odd parity, 1 stop bit
4: even parity, 1 stop bit
NOTE: 3 and 4 are available starting from the Sofrware version 0x218 (dec. 536) 1
0x0008 8 R Last error code 1...255 -
0x0011 17 RW Restarts counter write ‘42330’ to restart device (no response will follow) -
0x0097 151 R Sensor type code 0...65535 0
* - The new value is applied after restart.
** - Broadcast slave ID 0 can be usedto 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 keptin EEPROM after restart

E2658 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 Holding register RW Description Supported values (dec) Default
0x00A2 162 RW Zero adjustment for temperature data, °C × 100 -32000...+32000 (-320,00...+320,00 °C) 0
0x00A5 165 RW Zero adjustment for gas data, ADC -32000...+32000 ADC units 0
0x00A6 166 RW Slope adjustment for gas data 1...65535 512
0x00A7 167 RW Change rate limit for gas data, gas unit / s 1...32000, 0 - no limit 0
0x00A8 168 RW Integrating filter time constant, s 1...32000 (seconds), 0 - no filter 0
0x00C9 201 RW Parameter tied to analog output 1
0-none
1- temperature
2- gas concentration
9- forced Modbus control, value setin MHR / 40204 2
0x00CA 202 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 RW Forced value for analog output 1*** 0...1000 (0,0%...100,0% of outputscale) 0
0x00CC 204 RW Forced value for analog output 2*** 0...1000 (0,0%...100,0%of output scale) 0
0x00D3 211 RW Parameter tied to relay RE1
0-none
1- temperature
2- gas concentration
9- control by Modbus control,state set in MHR / 40214 2
0x00D4 212 RW Parameter tied to relay RE2
0-none
1- temperature
2- gas concentration
9- control by Modbus control,state set in MHR / 40215 2
0x00D5 213 RW Forced state for relay RE1*** 0- off, 1 - on 0
0x00D6 214 RW Forced state for relay RE2*** 0- off, 1 - on 0
0x00D7 215 RW Switching delay for relay RE1 0...1000 (s) 0
0x00D8 216 RW Switching delay for relay RE2 0...1000 (s) 0
0x00D9 217 RW Minimal on/off time forrelay RE1 0...1000 (s) 0
0x00DA 218 RW Minimal on/off time for relay RE2 0...1000 (s) 0
* - The new value is applied after restart.
** - Broadcast slave ID 0 can be usedto 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 keptin EEPROM after restart

E2658 series Modbus holding registers (part 3)
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 Holding register RW Description Supported values (dec) Default
0x00DB 219 RW Control logic for relay RE1
0- none
1- relay on at high values
2- relay on at low values
3- relay on at values within the range
4- relay on for the values outside rthe range 0
0x00DC 220 RW Control logic for relay RE2
0- none
1- relay on at high values
2- relay on at low values
3- relay on at values within the range
4- relay on for the values outside rthe range 0
0x00DD 221 RW LOW setpoint for relay RE1 0...65535 (gas units) see
Specifications
0x00DE 222 RW HIGH setpoint for relay RE1 0...65535 (gas units) see
Specifications
0x00DF 223 RW LOW setpoint for relay RE2 0...65535 (gas units) see
Specifications
0x00E0 224 RW HIGH setpoint for relay RE2 0...65535 (gas units) see
Specifications
0x00FF 255 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[2]= 0/1 - in case the sensor is absent, turn signaling off/on analog output1,
bit[3]=0/1 - in case the sensor is 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
bit[10]=0/1 - LED is on/off in normal condition
bit[11]=0/1 - LED and buzzer syncing off/on with RE1
bit[12]=0/1 - LED and buzzer syncing off/on with RE2 user defined
0x0100 256 R Raw temperature data, °C×100 signed integer, -4000...+8500 (-40,00...+85,00 °C)
0x0101 257 R Raw gas sensor data ADC data 0...4095
0x0102 258 R Measured temperature, °C×100 signed integer, -4000...+12500 (-40,00...+125,00 °C)
0x0103 259 R Gas concentration, gas units signed integer, -32000...+32000 (gas units)
0x0105 261 RW 0% value for analog output 1 signed integer, -32000...+32000 (ppm / ‰) 0
0x0106 262 RW 100% value for analog output 1 signed integer, -32000...+32000 (ppm / ‰) 1000
0x0107 263 RW 0% value for analog output 2 signed integer, -32000...+32000 (ppm / ‰) 0
0x0108 264 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 usedto 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 keptin EEPROM after restart
L
12
34
LHL
LH
H
H
L
12
34
LHL
LH
H
H