COMECO RT284U Panduan Pengoperasian

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Specifications

Case

Input

Outputs:

Electromechanical relay

SSR

MOS gate

Output for external SSR

- K1

- K2

Serial Interface

Power Supply

Excitation Voltage (Vaux)

Consumption

Measurement Error

Temperature Drift

RTD Line Error

Cold-junction Error

Operating Temperature / Humidity

Protection Class: front / terminals

Warranty and Support

...............................

serial number

...............................

manufacturing date

QC check mark .............(passed)

(stamp)

88 Slavyanska Str.

P.O.Box 378

Plovdiv 4000, BULGARIA

tel: +359 32 646523, 646524

fax: +359 32 634089, 646517

e-mail: [email protected]

QD-8.2.4-WC

Wiring

Important notes:

♦

Strictly observe the requirements

for RS485 network building!

♦

With DC power supply,

the polarity does not matter.

♦

In case of 90...250 VAC/DC power supply,

grounding the device via separate wire

is mandatory for covering safety standards.

'B',

'H',

'V',

'Q',

'L',

'R1',

'R2'

programmable

up to 2

5A/250VAC with NO/NC or NO contact

1A/250VAC,

0.2A/250VAC

0.1A/60V, optically isolated

5...24 VDC, 30 mA

relay,

SSR,

MOS gate,

for ext. SSR

relay,

SSR,

MOS gate,

for ext. SSR

RS485, isolated,

RS485 for "PolyMonitor", isolated

230 VAC,

90...250 VAC/DC,

24 VDC,

12...24 VAC/DC,

...................................

10...30 V, 30 mA,

........................

less than 3 VA

≤ ± 0.3% from span

≤ 0.02% from span for 1 °C

≤ ± 0.001%/Ω at R

≤ 50 Ω

lin

≤ ± 1 °C at air temperature -10...80 °C

-10...65 °C / 0...85% RH

IP65,

IP54 / IP20

Warranty

COMECO warrants this product

to be free from defects in materials

and workmanship for 2 years. If your unit

is found to be defective within that time,

we will promptly repair or replace it.

This warranty does not cover accidental

damage, wear or tear, or consequential

or incidental loss. This warranty

does not cover any defects caused

by wrong transportation, storage, installation,

or operating (see 'Specifications').

Technical support

In the unlikely event that you encounter

a problem with your COMECO device,

please call your local dealer or contact

directly our support team.

Input signal wiring

Connect the input

with regard to its type

through the respective and

depending on the case type

(see 'Specifications')

terminals on the device

back.

3-wire current

transmitters can be

supplied from Vaux.

Voltage transmitters must

be supplied externally!

Output wiring

Connect the outputs

with regard to their types

(see 'Specifications')

via the respective terminals.

RS485 wiring

Connect the unit

to RS485 network line

via the respective

terminals (connector).

Power supply wiring

Connect the right

power supply voltage

for your device

(see 'Specifications').

More detailed

wiring diagrams

are available at

comecogroup.com under

'Support' tab.

'S',

COMECO Inc., P.O.Box 378, Plovdiv 4000, BULGARIA, tel: +359 32 646523, 646524, fax: 634089

e-mail: [email protected], WWW.COMECOGROUP.COM

PROGRAMMABLE CONTROLLER

Please read this Operation Manual before mounting and operating!

Communication Protocol

Parameter Symbol

Input Type

inp

Unit

unit

Point Position

pnt

Input Low

i.hi

Input High

i.lo

Input Correction i.cor -1999...9999

Address

addr

Baud Rate

baud

Gradient

grad

Filter Time

f.t

Filter Band

f.b

Input Value

p.v

Error Info

error **

* Input Value (read-only)

numerical value with ISU - measured input value

sat.lo - ADC under-range

sat.hi - ADC over-range

inp.br - sensor break

break - device failure

noise - noisy measurement

** Error Info

0 - initializes non-volatile memory

-1 - error FAiL (read-only)

1...29 - errors ER01... ER29 (read-only)

RT284U

with keyboard

O PERA T ION MANUAL

Save the Manual for future references!

Table 2

Protocol architecture

♦

The protocol is based

Value

on UART protocol with:

pt100, pt1000,

ptc1, ptc2,

r.0.1k,

t.c.b, t.c.j,

t.c.k, t.c.r,

t.c.s, t.c.t,

♦

ASCII protocol is used

u, u.0.10,

for communicating,

i.0.20, i.4.20

and the information

is exchanged in frames.

c, f

♦

Each frame consists of 1,

0, 1, 2, 3

or 2 words separated

-1999...9999

by byte 32 (SPACE),

-1999...9999

and ends with bytes 13 (CR)

and 10 (LF). The first word

in the frame denotes

1...254

a parameter 'Symbol'

1200, 2400,

as taken from Table 2 and

4800, 9600

the second word (if needed)

0...9999

is the parameter 'Value',

both spelled with only

0...9999

small Latin letters, digits,

0...M

dots, and/or the '-' sign.

Device activating

♦

To respond to commands,

the device should be active.

♦

For a device to be activated,

it must receive a

command, where 'х' is

the value of the parameter

Address or the value '255' (if

device address is unknown),

and respond to it with ok..

♦

If a device does not respond

even to

the UART protocol settings,

chiefly Baud Rate value.

Baud Rate - as defined

by parameter Baud Rate;

Data bits - 8;

Parity Control - Even;

Stop bit - 1.

255, check