Evikon PluraSens E2227 Manuale utente

PluraSens®

Humidity & Temperature Transmitter

E2227

User Manual

E2227 Rev 17.05.2021
Table of contents
Speciﬁcations 3
Product description 4
Safety requirements 4
Operating conditions 4
Installation and connection 5
Delivery set 8
Emergency mode 8
Return to default settings 8
Modbus RTU Communication 9
Communication parameters 10
Modbus holding registers 10
Warranty 14
Manufacturer contacts 14
2

E2227 Rev 17.05.2021

Speciﬁcations

Sensor type

Digital combined RH and T sensor

Measurement range

0...95 % RH

-20...+70 °C

Resolution

0,01 %RH

0,01 °C

Accuracy

±2,5 % RH / ±0,5 °C

±1,8 % RH / ±0,3 °C on request

Self-diagnostics

Full functionality check at start-up

Warm-up time

≤ 1 s

Response time

<15 seconds

Power supply

11...30 VDC, nominal 24 VDC

Power consumption

< 1,5 VA

Analog outputs

2 × 4-20 mA / 0-10 V, user settable, freely

conﬁgurable scales

Load resistance

RL < (Us - 2 V) / 22 mA for 4-20 mA

RL > 250 kOhm for 0-10 V mode

RS485 ﬁeldbus interface

Up to 256 units on bus (1/8 unit load)

no galvanic isolation

Modbus RTU protocol support

Cable connections

Screwless spring loaded terminals

Enclosure

White ABS, wall mount, ventilation slots, protection class IP20

Dimensions

H71 × W71 × D27 mm

Weight

<100 g

Operating environment

Residential, business and industrial, indoor spaces

Operating conditions

20...+70 °C, 0...95% RH non-condensing,

no aggressive gases

CE marking

According to 2014/30/EU:

EN 61000-6-3:2020, EN 61326-1:2013(EMC, emissions)

EN 61000-6-1:2019, EN 61000-6-2:2019(EMC, Immunity)

E2227 Rev 17.05.2021

Product description

Humidity and temperature transmitter E2227 is a member of the new PluraSens® family of

multifunctional measurement instruments. The device is intended for the measurement of

relative humidity and temperature in air and non-aggressive gases indoors with high

accuracy and stability. The absolute humidity and dew point values can also be obtained.

Target applications are HVAC and building automation management systems.

The device is equipped with a digital combined RH and T sensor. The sensor is

temperature compensated to avoid transmitter self-heating effects. Compact wall-mount

slotted plastic enclosure provides natural ventilation of the sensor.

Two freely conﬁgurable 4-20 mA / 0-10 V analog outputs can be used to connect the

transmitter to secondary instruments. Each output can be independently assigned either to

temperature, relative humidity or dew point channel. RS485 interface with

industry-standard Modbus RTU protocol support allows direct Fieldbus networking of the

transmitter as a Slave unit.

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, dust or mists in the atmosphere.

Allowable conditions are:

– Temperature in the range of -20...+70 °C;

– Relative humidity in the range of 0...95%, without condensation;

– Atmospheric pressure in the range of 0,9...1,1 atm.

E2227 Rev 17.05.2021

Installation and connection

To ensure representative measurement of temperature and humidity in the room, choose

carefully the transmitter installation place. E2227 should not be located in direct sunlight,

near heat sources or air conditioning units, near doors and windows, in places where air

circulation is limited, or on poorly insulated and cold external walls.

Detach the base from the enclosure by pulling gently along the four guiding pins. You may

need to drill or cut suitable holes in the base for screws and cable. Attach the base to the

wall either with double-sided adhesive tape or with two screws (see drawings below).

E2227 Rev 17.05.2021

PCB without PSU and relays

Jumpers

OUT1 type (open: 4-20 mA; closed 0-10 V)

OUT2 type (open: 4-20 mA; closed 0-10 V)

Reset Modbus network parameters to default

X4 terminals

OUT1

4-20 mA / 0-10 V output

OUT2

4-20 mA / 0-10 V output

0 V / 24 VAC Neutral (optional)

RS485 A / Data +

RS485 B / Data -

+24 VDC / 24 VAC Phase (optional)

E2227 Rev 17.05.2021

Position the transmitter with the ventilation slots upwards and downwards to ensure

proper air convection for faster response and higher accuracy.

Plug the power cable and connect the analog outputs and/or digital interface terminals to

the relevant devices as described below.

E2227 uses screwless quick connect spring terminals 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 the 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 the

RS485 network. Use one pair for A and B wires and the second pair for common 0V and

power +U wires. to connect the transmitter to the Fieldbus network. polarity must be

respected when connecting to an external RS485 network. Overall length of all connections

via RS485 interface should not exceed 1200 m.

Note! The outputs are not galvanically isolated from external power supply and share

common 0V. Allowed load resistance limits are stated in the Speciﬁcations table. To power

the instrument from an external power source, connect terminals 0V and +U to the source

(see connection diagram).

Both analog outputs can be independently changed between 4-20 mA and 0-10 V type

using jumpers J1 (OUT1) and J2 (OUT2). By closing pins on a speciﬁc jumper the related

output is 0-10 V, with an open jumper the output is 4-20 mA. Power restart is required after

changing the position of the jumpers.

By default the output OUT1 is assigned to relative humidity with default scale 0-100 %RH.

By default the output OUT2 is assigned to temperature with default scale 0-100 °C.

After wiring and setting output options attach the enclosure back to the base.

A LED placed on the PCB of the device to control the connection process. The LED

response to different processes is presented in the table below:

Mode

LED mode

During calibration mode or sensor heating

period (if activated)

0.5 Hz (50% on, 50% off)

During Modbus communication cycle

Short on-off pulses

Normal operating/measurement

Continuously on or off

E2227 Rev 17.05.2021

Delivery set

●Humidity and temperature transmitter E2227

●Set of mounting accessories (2 screws with plastic dowels)

Emergency mode

The current outputs of the transmitter may be programmed via Modbus commands to

signal if the connection with the sensor is lost. The signal may be 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, baud rate and stop bit number to factory settings, proceed as

follows:

1. De-energize the device

2. Connect the X6 jumper

3. Turn on the device

4. De-energize the device

5. Disconnect the X6 jumper

6. Turn on the device

E2227 Rev 17.05.2021

Modbus RTU Communication

Modbus main holding registers (00xxx or 40xxx): 0-based, decimal

Reg

Description

hardware version

software version

product serial number

Slave ID [1...247], default 1

baud rate, default 9600

response delay [1...255] ms, default 10

stop bits , parity bit [1,2,3,4], default 1

write ‘42330’ to restart

168

integrating time constant [0...32000] s

201

OUT1 parameter, 0:none, 1:T, 2:RH

202

OUT2 parameter, 0:none, 1:T, 2:RH

258

temperature, °C×100, signed integer

259

humidity, %RH×100, integer

261

OUT1 out 0%, [±1000] °C / %RH

262

OUT1 out 100%, [±1000] °C / %RH

263

OUT2 out 0%, [±1000] °C / %RH

264

OUT2 out 100%, [±1000] °C / %RH

Note! New Slave ID, baud rate and stop bits values apply after restart

Supported Modbus functions: 03 - read multiple registers, 06 - write single register

E2227 Rev 17.05.2021

Communication parameters

Parameter

Permitted values

Default

Supported baud rates

1200, 2400, 4800, 9600, 19200, 38400, 57600

9600

Data bits

Parity

none / odd / even

none

Stop bits

1, 2

Protocol

Modbus RTU

Modbus functions

03 - Read multiple registers

06 - Write a 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)

Modbus holding registers

Registers Reg are shown in hexadecimal 0-based format.

Modbus holding register numbers MHR are shown in decimal 1-based format, and may be

addressed either from 00001 or 40001 base.

Reg

(hex)

MHR (dec)

Description

Supported values (dec)

Default

0x0004

(4)0005

Slave ID (net address) *

1...247 **

0x0005

(4)0006

Baud Rate *

1200, 2400, 4800, 9600, 19200,

38400, 57600

9600

0x0006

(4)0007

Response delay, ms

1...255

0x0007

(4)0008

Stop bits, parity bit *

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 Software

version 0x214 (dec. 532)

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