COMECO TC67U User manual

Specifications
16
Input
Outputs:
Electromechanical relay
SSR
MOS gate
Output for external SSR
- REL1
- REL2
Serial Interface
Po er Supply
Auxiliary Supply Output
Consumption
Measurement Error
Temperature Drift
RTD Line Error
Cold-junction Error
Operating Temperature / Humidity
Protection Class: front / terminals
programmable
up to 2
5A/250VAC ith NO/NC contact
1A/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,
 .............................................
 ≤ Up (DC); ≤1.2*Up (AC),  24 VDC, 30 mA
less than 3 VA
≤ ± 0.3% from span
≤ 0.02% from span for 1 °C
≤ ± 0.001%/Ω at R
lin . ≤ 50 Ω
≤ ± 1 °C at air temperature -10…80 °C
-10…65 °C / 0…85% RH
IP54 / IP20
Warranty and Support
………………………….
serial number
………………………….
manufacturing date
QC check mark …….……(passed)
(stamp)
88 Slavyanska Str.
P.O.Box 378
Plovdiv 4000, BULGARIA
tel: [phone], 646524
fax: [phone], 646517
e-mail: [e-mail]
QD-8.2.4-WC
Warranty
COMECO arrants this product
to be free from defects in materials
and orkmanship for 2 years. If your unit
is found to be defective ithin that time,
e ill promptly repair or replace it.
This arranty does not cover accidental
damage, ear or tear, or consequential
or incidental loss. This arranty
does not cover any defects caused
by rong transportation, storage, installation,
or operating (see 'Specifications').
Technical support
In the unlikely event that you encounter
a problem ith your COMECO device,
please call your local dealer or contact
directly our support team.
COMECO Inc., P.O.Box 378, Plovdiv 4000, BULGARIA, tel: [phone], 646524, fax: 634089
e-mail: [e-mail], WWW.COMECOGROUP.COM
TC67U
OPERATION MANUAL
Please read this Operation Manual before mounting and operating!
Save the Manual for future references!
Wiring
4
Input signal wiring
Connect the input
ith regard to its type
through the respective terminals
on the device back.
3- ire voltage transmitters must
be supplied externally!
Output wiring
Connect the outputs
ith regard to their types
(see 'Specifications')
via the respective terminals.
RS485 wiring
Connect the unit
to RS485 net ork line
via the respective terminals.
Power supply wiring
Connect the right po er
supply voltage for your device
(see 'Specifications').
More detailed
wiring diagrams are available at
comecogroup.com under
'Support' tab.
Communication Protocol
13
Table 2
Para eter Sy bol Value
Input Type inp
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,
u, u.0.10,
i.0.20, i.4.20
Unit unit c, f
Point Position pnt 0, 1, 2
Input Low i.hi -199...999
Input igh i.lo -199...999
Input Correction
i.cor
-199...999
Address addr 1...254
Baud Rate baud 1200, 2400,
4800, 9600
Gradient grad 0...999
Filter Time f.t 0...999
Filter Band f.b 0...M
Input Value p.v *
Error Info rror
**
* 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
br ak
- device failure
nois
- noisy measurement
** Error Info
0
- initializes non-volatile memory
-1
- error FAL (read-only)
1...29
- errors W01... W29 (read-only)
Protocol architecture
♦ The protocol is based
on UART protocol ith:
 Baud Rate - as defined
by parameter Baud Rate;
 Data bits - 8;
 Parity Control - Even;
 Stop bit - 1.
♦ ASCII protocol is used
for communicating,
and the information
is exchanged in frames.
♦ Each frame consists of 1,
or 2 ords separated
by byte 32 (SPACE),
and ends ith bytes 13 (CR)
and 10 (LF). The first ord
in the frame denotes
a parameter 'Symbol'
as taken from Table 2 and
the second ord (if needed)
is the parameter 'Value',
both spelled ith only
small Latin letters, digits,
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 U х
command, here 'х' is
the value of the parameter
Address or the value '255' (if
device address is unkno n),
and respond to it ith ok..
♦ If a device does not respond
even to U 255, check
the UART protocol settings,
chiefly Baud Rate value.
PROGRAMMABLE PROCESS I DICATOR
v1
5-05.12
I portant notes:
♦ Strictly observe
the requirements for
RS485 networ building!
♦ With DC power supply,
the polarity
does not matter.
♦ In case of 90...250 VAC/DC
power supply,
grounding the device
through terminal 2
is mandatory for covering
safety standards.

Overview
2
TC67U is a lo -cost multifunctional
programmable process indicator.
Its universal input accepts the most
common RTDs, thermocouples,
and linear signals. The device can be
equipped ith up to 2 alarm outputs,
hich can control various actuators
using ON/OFF control algorithm,
and the optional RS485 interface
enables net orking.
The TC67U indicator allo s
adjusting of the built-in digital filters
and the programmable output delay,
resulting in increased operation reliability
in case of industrial interferences.
Controls
♦ Remove the front frame and panel
to reach the 3 hidden keys
next to the display.
♦ The key symbols , , and
are used further in this manual.
Input Setting
J1 J2
Input type short out
0...10 V J2
all the rest J1
♦ Open the case to reach
the configuration jumpers J1 and J2,
located on the main board.
♦ To set the desired input type,
short out the respective
configuration jumper.
Declaration of Conformity
15
The undersigned hereby declares,
on behalf of COMECO Inc.,
that this device has been manufactured
in compliance ith standards
EN 61000 and EN 61010,
and meets the requirements
of Directives 73/23/EEC and 89/336/EEC.
Vladimir Sakaliyski
CEO
COMECO Inc.
Waste Disposal
Do not dispose of
electronic devices
together with
household waste
material!
If disposed of ithin European Union,
this product should be treated
and recycled in accordance ith the la s
of your jurisdiction implementing
the WEEE Directive 2002/96
on the Waste Electrical and Electronic
Equipment.
Communication Protocol
14
Notes:
♦ TC67U adds 3 spaces
in the beginning of the response.
♦ TC67U returns decimal point
even when the value is integer.
♦ #13 (CR) is byte 0x0D;
#10 (LF) is byte 0x0A.
♦ The U 255 command should be used
only in case just one slave is presented.
Protocol exa ples:
PC or other device: TC67U response:
activating device number 10
U10#13#10 ok.#13#10
reading filter time
f.t#13#10 f.t 0015.#13#10
riting filter time of 30
f.t 30#13#10 f.t 0030.#13#10
reading input value of 27.5
p.v#13#10 p.v 027.5#13#10
invalid command.
command not recognized
parity rror. parity error detected
not a numb r. attempt to write symbols
for numerical parameter
point rror. value resolution greater
than parameter’s one
out of rang . value out of range
unit is busy. writing is allowed only
to device at Basic level
r ad only. parameter is read-only
can't sav . problem with writing
in non-volatile memory
♦ The device remains active
until it receives another U х
command, but ith different
device address, a FAL
error, or ith reset.
♦ Any Baud Rate value change
through the communication
interface also deactivates
the device.
Reading fro a device
♦ If the frame consists of only
one ord, it is recognized
as a command for reading.
♦ The device responds to it by
returning the same ord and
its value, according to Table 2.
Writing in a device
♦ If the frame consists of
t o ords, it is recognized
as a command for riting.
♦ With riting, transferred
are the same t o ords
that ould have been
received at the respective
command for reading
from the device.
♦ After successful riting,
the device responds ith
the respective command
for reading, except for
the baud command.
Other device responses
♦ When Error Info value is -1,
the device substitutes any
command for rror reading.
♦ TC67U responses in case
of incorrect protocol use
are given on the left.
Reset
To reset the device,
send command r s t.
Mounting
3
♦ Place TC67U into a 136x66 mm
panel cut-out.
♦ Tighten it into place using
the enclosed mounting brackets.
Electro-Magnetic Interference (EMI) Issues
♦ All signal ires must be shielded.
They must not be packaged together
ith po er cables!
♦ Never lay the signal ires close
to inductive or capacitive noise
sources, such as relays, contactors,
motors, etc.!
♦ All shields have to be grounded ONLY
at one end, as closer as possible
to the indicator terminals!
♦ Avoid sharing supply lines
ith po erful consumers,
especially ith inductive loads,
s itched on and off.
♦ To stop un elcome interference
signals entering through the po er
supply lines, use shielded 1:1
isolation transformer!
♦ Shunt all s itched (not only those
s itched by the indicator) inductive
consumers ith special suppression
net orks: RC group and varistor -
for AC loads, or diode - for DC loads.
♦ If the indicator operates in a very
po erful EMI area, it has to be
mounted inside a grounded metal
shielding box!
♦ To protect the interface from electro-
magnetic disturbances, follo
the RS485 standard guidelines.

Para eter Sy bol Description
Configuration Parameters (These parameters are part of Configuration level)
Input Type inP Type of signal that can be connected to the device input
Unit Uni Temperature measurement unit
Point Position 
Pnt
Display decimal point position
Input Low ILo Display value at low limit of the linear input range
Input igh IHi Display value at high limit of the linear input range
Input Correction
ICr
Constant to be added to the measured input value
Address Adr Device address
Baud Rate bAu Serial interface rate
Gradient Grd Maximum input signal change during the sampling period (120 ms)
Filter Time \t Relative time constant of the input filter
Filter Band \b Zone around the measured value, within which the filter is active
SP limit Low %[L Set-point Low limit
SP limit igh %[H Set-point igh limit
Direction 1 dR1 Control action direction of output REL1
Direction 2 dR2 Control action direction of output REL2
Parameters of the control algorithm
(These parameters are part of Parametric level)
+ Differential 1 [e1 Positive Differential of output REL1
- Differential 1 me1 Negative Differential of output K1
Time On 1 ym1 ON duration of output REL1
Time Off 1 y\1 OFF duration of output REL1
old 1 Hl1 olds the output reaction of output REL1
The same 5 parameters, but with index 2 - for output REL2
Parameters of Basic (operating level
Set Point 1 %[1 Set-point value of output REL1
Set Point 2 %[2 Set-point value of output REL2
Input Filtration
11
Peak filter
This filter is intended for eliminating
pulse spikes (peaks), hich can appear
in the input signal, in the follo ing ay:
♦ TC67U measures the input signal value
every 120 ms (sample time).
♦ The measured values are compared
subsequently. The filter checks
the difference bet een the last
t o samples. If it does not exceed
Gradient value, the device accepts
the signal as normal.
♦ If the last measured value differs
from the previous one by more than
the Gradient value, the filter output is held
until the device determines a presence
of a normal signal. It is possible only
if the input signal has not been changed
ith more than the Gradient value
for four subsequent samples.
♦ If the device has not determined
a normal signal for 20 subsequent
samples, noi appears on the display
(see 'Basic level').
Low-pass filter
This first-order filter acts ONLY ithin
a certain band around filter output value.
This has been designed to cut periodic
noises outside the communication signal
spectrum.
♦ Filter operation is defined by t o
parameters:
Filter Time (defines filter time constant) and
Filter Band (defines filter active band
around filter output value).
♦ If the ne ly measured value differs
from the filter output by more than
Filter Band, the filter resets
ith a ne initial output value
(ne ly measured value).
Output Control
10
Alar output operation
♦ The alarm outputs
operate according
to the control algorithm
parameters.
♦ The outputs deactivate
ith the value change
of one of the follo ing
configuration
parameters - Point
Position, Input Low, Input
High, and Input Correction
- and remain inactive till
Basic level is entered.
♦ The outputs deactivate
also hen an error
has been detected
(see 'Error essaging').
ON/OFF control algorith
The static characteristic
of an alarm relay controlled
by an ON/OFF algorithm
is sho n on the left dra ing.
Output hold
For eliminating undesirable
s itches of the alarm output,
additional parameter (Hold)
is assigned to hold
the output reaction
for certain period of time.
Output pulse ode
When a relay is forced
to ON by the control
algorithm, it can either
stay ON or pulse
depending on Time On and
Time Off parameter values.
Setting any of these
parameters to '0'
disables the Pulse mode.
Table 1
Value Unit Notes
Py or Pyt - Pt100: -100…850 °C or Pt1000: -100…600 °C
Ptx1 or Ptx2 - PTC 1k or 2k: -50...150 °C
R)1
- resistive linear: 0…1 kΩ
ycb
- T/C "B": 200...1000 °C
ycJ
- T/C "J": -20...1000 °C
yc" - T/C "K": -20...1000 °C
ycr
- T/C "R": 0...1000 °C
ycS
- T/C "S": 0...1000 °C
yct
- T/C "T": -40...400 °C
u - voltage linear: 0…100 mV
I0 or I4 - current linear: 0…20 mA or 4…20 mA
w10 - voltage linear: 0…10 V
.C, .F - °C or °F
x1, x0.1, x0.01 - when indicating values with the input-signal measurement unit (ISU)
-199 ... 999 ISU These parameters make sense ONLY in case of a linear input signal!
-199 ... 999 ISU OFFSET
1…254 -
!2, @4, $8, (6 bps 1200, 2400, 4800 (factory-set), or 9600 bps
0 … 999 ISU used for input peak filtration; Value '0' cancels the filtration.
0 … 999 - This parameter and the following one define a low-pass input filter.
0 … M ISU temperature: whole part of M ≤ 100; linear: M = 25% of input range
within input range ISU These parameters keep the Set-point in safe limits,
preserving it from random changes.
coo, EA - ('cooling' , 'heating')
These parameters are accessible in the presence of the corresponding relay.
0 ... 999 ISU lower than ( igh input range - Set Point 1)!
0 ... 999 ISU lower than (Set Point 1- Low input range)!
0 ... 999 sec. Value '0' disables Pulse mode.
0 ... 999 sec.
These parameters are accessible in the presence of the corresponding relay.
within input range ISU

Error Messaging
12
Message Para eters Error type
FAL all Incorrect
memory
br" - Service
required!
W01 Grd Out of range
W02 \t Out of range
W03 \b Out of range
W04 %[L Out of range
W05 %[H Out of range
W06 %[L, %[H %[L> %[H
W11, W21 ym1, ym2 Out of range
W12, W22 y\1, y\2 Out of range
W13, W23 Hl1, Hl2 Out of range
W14, W24 [e1, [e2 Out of range
W15, W25 me1, me2 Out of range
W16, W26 %[1, %[2 Out of range
(%[L… %[H)
W17, W27 %[x - me x
Lo er than
Input
Lo Range
Limit
W18, W28 %[ x
+ [e x
Exceeds
Input
High Range
Limit
W29 Adr Out of range
♦ In some cases,
TC67U finds
non-conformities
in parameter values
that must be corrected
before operating
at Basic level.
♦ The device indicates
such kind of problems
by displaying
error messages
as given on the left.
♦ If FAL appears
on the display,
try debugging
by turning
the po er off/on.
♦ If the problem persists,
press and hold or
send command rror 0
via the communication
interface to restore
the default (factory)
settings.
Parameter Programming
5



- Changing
Point Position value
reflects the real value
of all parameters
with ISU!
E.g.: changing
Point Position value
from (х1) to (х0.1)
would change
a Set-point value
of 100 to 10.0!!!
Indicator para eters
TC67U is a programmable device hose
service behavior is determined by a set
of parameters. All the parameters, along
ith their names, symbols, and value ranges,
are given in Table 1.
Setting nu erical para eter value
♦ Enter parameter value adjustment mode
(see 'Progra Levels').
♦ The hole part of the value together ith
the left zeroes appears on the display,
and the rightmost digit blinks.
♦ To select another digit, press .
♦ The 2 rightmost digits can accept values
from 0
00
0 to 9
99
9, and the leftmost digit
can also accept the values -
--
- and `
``
`.
♦ To increase or decrease the blinking digit
value, use respectively or .
♦ Confirm the adjusted value by pressing
simultaneously + or + .
♦ If the ne value has not been confirmed
and no key has been pressed for a certain
period of time, value adjustment
automatically ceases, and the parameter
retains its initial value.
Setting sy bolic para eter value
♦ Enter parameter value adjustment mode
(see 'Progra Levels').
♦ Read the blinking parameter value.
♦ To change the value, use or ,
and to confirm, press +
or + .
♦ If the ne value has not been confirmed
and no key has been pressed for a certain
period of time, value adjustment
automatically ceases, and the parameter
retains its initial value.
Program Levels
8
Basic level
At Basic level, TC67U indicates
the measured input value (PV)
ith a resolution, according to
the Point Position parameter.
♦ If the hole part of PV cannot be
entirely displayed, the unit
generates blinking 'overflo '
messages (oL or -oL,
depending on PV sign).
♦ If PV is out of its operating range
(the input range according
to Table 1, extended by 5%
on both sides), the device displays
blinking symbolic messages:
<_> (under-range) or
{+} (over-range).
When PV is out of physical range,
the unit displays ---.
♦ Upon entering Basic level,
TC67U may display
the ini message,
indicating that some time
is necessary for filter initialization.
♦ The noi message may appear
as a result of the peak filter
operation (see 'Input filtration').
♦ To enter parameter value
adjustment mode for Set Point 1,
press and hold until %[1
appears on the display.
To vie the Set-point value,
release the key.
♦ To enter parameter value
adjustment mode for Set Point 2,
follo the same procedure,
but start ith the key.
Program Levels
9
Para etric level
This level contains the control
algorithm parameters. If no alarm output
is installed, this level does not sho up.
♦ Enter from Basic level by pressing
and holding until PAr appears
on the display. Release the key.
If the key is not released on time,
TC67U enters Configuration level.
♦ Choose a parameter
using and .
♦ To enter parameter value
adjustment mode, press .
♦ If no key has been pressed
for a hile, the device automatically
returns to Basic level, storing all
confirmed changes.
♦ For quick exiting and saving,
use key combination + .
Configuration level
This level contains the configuration
parameters of the device.
♦ Enter from Basic level by pressing
and holding until C0n
appears on the display.
♦ To access and adjust
the configuration parameters,
follo the algorithm described
in 'Parametric level'.