Pixsys ATR 121 User manual

2
1 - SECTION FOR USERS ...................................................................... 4
2 - DISPLAYS AND KEYS ....................................................................... 4
3 - CHANGE OF SETPOINT VALUE ....................................................... 5
4 - LIST OF ERROR MESSAGES............................................................ 6
5 - SECTION FOR INSTALLERS............................................................. 6
6 - INTRODUCTION ................................................................................ 6
7 - ORDERING CODES........................................................................... 7
8 - TECHNICAL DATA............................................................................. 8
9 - ELECTRICAL WIRINGS..................................................................... 9
10 - WIRING DIAGRAM ATR121 / ATR141.......................................... 10
11 - ALARM INTERVENTION MODES .................................................. 13
12 - MODIFY CONFIGURATION PARAMETERS.................................. 17
13 - CONFIGURATION PARAMETERS................................................. 18
14 - TUNING.......................................................................................... 30
15 - MANUAL START OF TUNING........................................................ 31
16 - AUTOTUNING ................................................................................ 31
17 - FUNCTION LATCH ON .................................................................. 32
18 - FUNCTION NEUTRAL ZONE......................................................... 34
19 - SERIAL COMMUNICATION ........................................................... 35
20 - MEMORY CARD (OPTIONAL) ...................................................... 39
21 - LOADING DEFAULT VALUES........................................................ 41
22 - SUPERVISORY SYSTEM WITH CONTROLLERS ATR121 / 141.. 42
23 - CONFIGURATION MEMORANDUM .............................................. 43
24 - NOTES / UPDATE.......................................................................... 45
Contents

3
25 - SEZIONE UTENTE........................................................................ 46
26 - VISUALIZZATORI E TASTI ............................................................ 46
27 - CAMBIO DEL SETPOINT............................................................... 47
28 - SEGNALAZIONE ANOMALIE......................................................... 48
29 - SEZIONE INSTALLATORE ........................................................... 49
30 - INTRODUZIONE............................................................................. 49
31 - COMPOSIZIONE DELLA SIGLA .................................................... 50
32 - CARATTERISTICHE ...................................................................... 51
33 - COLLEGAMENTI ELETTRICI......................................................... 53
34 - SCHEMA DI COLLEGAMENTO ATR121 / ATR141...................... 53
35 - MODI D’INTERVENTO ALLARME.................................................. 57
36 - MODIFICA PARAMETRI DI CONFIGURAZIONE ........................... 60
37 - TABELLA PARAMETRI DI CONFIGURAZIONE............................. 62
38 - TUNING.......................................................................................... 75
39 - LANCIO DEL TUNING MANUALE.................................................. 76
40 - TECNICA DI TUNING AUTOMATICO ............................................ 77
41 - FUNZIONE LATCH ON................................................................... 77
42 - FUNZIONE BANDA MORTA........................................................... 79
43 - COMUNICAZIONE SERIALE.......................................................... 80
44 - MEMORY CARD (OPZIONALE) ..................................................... 84
45 - CARICAMENTO VALORI DI DEFAULT.......................................... 86
46 - SUPERVISIONE CON ATR121 / 141 ............................................. 87
47 - PROMEMORIA CONFIGURAZIONE.............................................. 88
48 - NOTE / AGGIORNAMENTI............................................................. 90
49 - IDENTIFICATION DU MODÈLE ..................................................... 91
50 - DONNÉES TECHNIQUES.............................................................. 92
51 - RACCORDS ÉLECTRIQUES ......................................................... 94
Sommario

4
1 - SECTION FOR USERS
2 - DISPLAYS AND KEYS
Visualize setpoints (ex. programmed temperature):
press once for SET1 (Led Out1 flashes),
press twice for SET2 (Led Out2 flashes).
In configuration mode press with arrow
keys to modify value of visualized parameter.
Enter configuration of parameters (by password).
Activate special functions.
Flashing when setpoint is vvisualized
on display and can be modified.
ON when output is active.
Display normally shows
process value (ex. measured temperature),
but can also visualize setpoints or value of
entering data
Visualize set, increase set
or scroll parameters
(whith fast advancement)
Visualize set, decrease set,
scroll parameters.
(whith fast advancement)
ON when controller responds
to a Master request over
serial line RS485

5
3 - CHANGE OF SETPOINT VALUE
To modify the setpoint value, press key or one of the
arrow-keys: led OUT1 flashes and it is now possible to
enter/modify setpoint value by pressing the arrow-keys.
Press Display Do
1
or
or
Display
shows
control
setpoint;
Led OUT1
flashes.
Press or
To modify setpoint (fast
advancement available).
Approx. 4 seconds after last
modify, display shows again
process value (value read by
sensor input).
2
Display
shows
alarm
setpoint
and led
OUT2
flashes.
Press or to increase or
decrease setpoint value.
When the keys are released, the
new value is automatically stored
and in a few seconds display
shows again process value.

6
4 - LIST OF ERROR MESSAGES
If the plant does not work properly, the controller stops the
running cycle and shows the anomaly.
For example the controller will notice the failure of a
thermocouple displaying (flashing).
For further error signs check the list below.
Error Cause Do
Programming error
EPROM. Contact technical service
Cold junction failure or
room temperature out of
range
Contact technical service
Wrong configuration data.
Possible lost of calibration
values
Check configuration
parameters
Open thermocouple or
room temperature out of
range
Check sensors connection
and their integrity
Missing calibration data Contact technical service
5 - SECTION FOR INSTALLERS
6 - INTRODUCTION
Thanks for choosing a Pixsys Controllers. Various models with 3-4
digits display make the controller suitable for a wide range of
applications with temperature, humidity, pressure sensors and
linear potentiometers. Output options include two relays and SSR,
but the unit is configurable also as visualizer/indicator for
applications not requiring control or alarm outputs. PID control with
Autotuning function enables to adapt control algorithm to the plant.
For applications with linear potentiometers the function LATCH ON
allows a quick calibration. Memory-card is available to copy
configuration parameters and to keep record of them.
The tables below allow to select the required model.

7
7 - ORDERING CODES
Ordering codes model ATR121
ATR121- xx x
AD 12…24Vac ±10% 50/60Hz
12…35Vdc
A 24 Vac ±10% 50/60 Hz
B 230 Vac ±10% 50/60 Hz
Power
supply
C 115 Vac ±10% 50/60 Hz
Serial
communica
tion
A
AD
T
T
RS485 - protocol Modbus RTU slave.
Relay Q2 not available in this model,
alarm available on SSR output.
Only Code AT: 24Vac +/- 10% 50/60 Hz
Only Code ADT: 12…35Vdc
Ordering codes Model ATR141
ATR141- xx x
AD 12…24Vac ±10% 50/60Hz
12…35Vdc
A 24 Vac ±10% 50/60 Hz
B 230 Vac ±10% 50/60 Hz
Power
supply
C 115 Vac ±10% 50/60 Hz
Serial
communica
tion
A
AD
T
T
RS485 -protocol Modbus RTU slave.
Relay Q2 not available in this model,
alarm available on SSR output.
Only Code AT: 24Vac +/- 10% 50/60 Hz
Only Code ADT: 12…35Vdc

7
7 - ORDERING CODES
Ordering codes model ATR121
ATR121- xx x
AD 12…24Vac ±10% 50/60Hz
12…35Vdc
A 24 Vac ±10% 50/60 Hz
B 230 Vac ±10% 50/60 Hz
Power
supply
C 115 Vac ±10% 50/60 Hz
Serial
communica
tion
A
AD
T
T
RS485 - protocol Modbus RTU slave.
Relay Q2 not available in this model,
alarm available on SSR output.
Only Code AT: 24Vac +/- 10% 50/60 Hz
Only Code ADT: 12…35Vdc
Ordering codes Model ATR141
ATR141- xx x
AD 12…24Vac ±10% 50/60Hz
12…35Vdc
A 24 Vac ±10% 50/60 Hz
B 230 Vac ±10% 50/60 Hz
Power
supply
C 115 Vac ±10% 50/60 Hz
Serial
communica
tion
A
AD
T
T
RS485 -protocol Modbus RTU slave.
Relay Q2 not available in this model,
alarm available on SSR output.
Only Code AT: 24Vac +/- 10% 50/60 Hz
Only Code ADT: 12…35Vdc
8
8 - TECHNICAL DATA
Main features
Displays 3 digits (0,56 inches) on ATR121
4 digits (0,40 inches) on ATR141
+ 3 Leds (Out1 , Out2 , Fnc)
Operating temperature 0-40°C - humidity 35..95uR%
Sealing Front panel IP65 (with gasket) /
Box IP30 / Terminal blocks IP20
Material ABS UL94V2 self- exstinguish
Weight Approx. 100 gr.
Hardware data
Analogu
e input
AN1
Configurable via software
Thermocouples:
Type K, S, R, J.
Thermoresistance:
PT100, PT500, PT1000, Ni100,
PTC1K, NTC10K (β3435K)
Linear:
0-10V (Ri>= 110 KΩ)
0-20, 4-20mA (Ri <=4.7 Ω)
Potentiometers: ≤6KΩ, ≤150KΩ
Tolerance 25°C
0.5 % ± 1 digit for
thermocouples
and RTD
Cold junction
0.2°c/°c of
ambient
temperature
0.2% ± 1 digit for
V, mA
Relay
outputs
2Relays OUT1 :10A resistive on AD codes,
8A resistive with internal transformer
OUT2 : 5A resistive
SSR
output
8 Volt 20mA for version A/B/C
15 Volt 30mA for version AD (alim. 12Vac)
30 Volt 30mA for version AD (alim. 24Vac)
Software data
Control
algorithm
On/OFF with hysteresis or P.I.D. with
Autotuning
Data
protection
Configuration password, quick programming
by Memory card

9
8.1 Sizes and installation
I
6 7
Dima di foratura
28.5 x 70.5 mm
Frontal panel cut-out
Spessore suggerito
2 mm
Suggested thickness
÷8
77 mm
35 mm
53 mm
7
42mm
inserimento
Memory Card
42mm
insert
Memory Card
9 - ELECTRICAL WIRINGS
Although this controller has been designed to resist
the noises in an industrial environment, please
notice the following safety guidelines:
•Separate control lines from the power wires.
•Avoid the proximity of remote control switches,
electromagnetic meters, powerful engines.
•Avoid the proximity of power groups, especially
those with phase control

10
10 - WIRING DIAGRAM ATR121 / ATR141
PIXSYS
10A 230V
Co sf 1
3A 230V
Cosf 0.8
Q1
PT C/ N T C
-
+
Tc
+VDC
S SR
1234
56789
10 11 12
-
+
I
V/I
+
-
PT/NI100/1K
2 wire 4/20mA
Po we r
M emory1
-
+
ATRxxx- xxT
-
+
RS485
SUPPLY
PIXSYS
10A 230V
Co sf 1
3A 230V
Cosf 0.8
Q1
PT C/ N T C
-
+
Tc
+VDC
SSR
1234
56789
10 11 12
-
+
I
V/I
+
-
PT/NI100/1K
2 wire 4/20mA
Po we r
5A 230V
Co sf 1
1A 230V
Cosf 0.8
Q2
M emory
1
ATRxxx- xx
-
+
SUPPLY
10.1 Low tension power supply 12/24 Vac-Vdc
Models: ATR121-AD , ATR141-AD
12…24Vac ±10% 50/60Hz
12…35Vdc
**Code “T” with serial communication
ONLY 12…35Vdc
10.2 Power supply 24/115/230 Vac
Models: ATR121-A-B-C , ATR141-A-B-C
24Vac ±10% 50/60Hz
230Vac ±10% 50/60Hz
115Vac ±10% 50/60Hz
10.3 AN1 analogue input
For thermocouples K, S, R, J
•Comply whit polarity
•When extending thermocouples be
sure to use the correct
extension/compensating cable
Only model AD
To assure optimal operation of the device,
use ground-isolated sensors. Otherwise
use single isolated transformers for each
controller

11
For thermoresistances PT100, NI100
•For a three-wires PT100 use cables
with the same diameter
•For a two-wires PT100 short-circuit
terminals 10 and 12.
10
11
12
RE
D
WHITE
RE
D
For thermoresistances NTC, PTC,
PT500, PT1000 e potentiometers
For linear signals V/mA
•Comply whit polarity
10.4 Examples of connection for linear input
1112
For signals 0…10V
Comply with polarity
Ri>=110KΩ
1112 9
For signals 0/4…20mA with three-wires
sensors
Comply with polarity
A= sensor supply
Check power supply requirements on
technical data sheet of sensor!
Capacity 12…24V / 30mA for models AD
Capacity 8V / 20mA for models A-B-C
B= sensor ground
C= sensor output

12
1112
For signals 0/4…20mA with external
power of sensor
Comply with polarity
B= sensor ground
C= sensor output
12 9
For signals 0/4…20mA with two-wires
sensors
Comply with polarity
A= sensor supply
Check power supply requirements on
technical data sheet of sensor!
Capacity 12…24V / 30mA for models AD
Capacity 8V / 20mA for models A-B-C
C= sensor output
10.5 Relay outputs
76543
•Q1 capacity 8A/250V~ (Models A-B-C)
resistive (manoeuvre 2x105min -
8A/250V~)
•Q1 capacity 10A/250V~ (Model AD)
resistive (manoeuvre 2x105min -10A
/250V~)
•Q2 capacity 5A/250V~ resistive
(manoeuvre 2x105min a 3A /250V~)
10.6 SSR output
98
Capacity 12…24V/30mA on model AD
Capacity 8V/20mA on models A-B-C
Command output if configured as SSR

13
10.7 Serial communication
Models ATR121-xT , ATR141-xT
RS485, protocol MODBUS-RTU
Do not use LT (line termination)
resistors
11 - ALARM INTERVENTION MODES
11.1 Absolute Alarm or Threshold Alarm (
selection)
On On
Off Off
Pv
> 0
Hysteresis
parameter
Time
Alarm
output
A
larm Spv
Absolute alarm with
controller in heating
functioning
(Par.11 selected
) and hysteresis
(absolute value)
On On
Off Off
Pv
> 0
Hysteresis
parameter
Time
Alarm
output
A
larm Spv
Absolute alarm with
controller in cooling
functioning
(Par.11 selected
) and hysteresis
(absolute value)

14
11.2 Absolute Alarm or Threshold Alarm Referring to
Setpoint Command ( selection)
On
Off Off
Comand Spv
> 0
Hysteresis
parameter
Time
Alarm
output
A
larm Spv
Absolute alarm refers to
the command set, with the
controller in heating
functioning
(Par.11 selected
) and hysteresis
(absolute value)
The command set can be
changed by pressing the
arrow keys on front panel
or using serial port RS485
commands.
11.3 Band Alarm ( selection)
On OnOn
Off OffOff
Pv
Time
Alarm
output
Comand Spv > 0
Hysteresis
parameter
Alarm Spv
Alarm Spv
Band alarm with hysteresis
N.B.: hysteresis value can’t
be less than “0”

15
11.4 Upper Deviation Alarm ( selection)
On On
Off Off
Pv
Time
A
larm
output
Comand Spv
> 0
Hysteresis
parameter
A
larm Spv
Upper deviation alarm
value of alarm setpoint
greater than “0” and
hysteresis value greater
than“0” (Par.23 > 0)
N.B.: hysteresis value can’t
be less than “0”
On On
Time
Off Off
A
larm
output
Pv
Comand Spv
> 0
Hysteresis
parameter
A
larm Spv
Upper deviation alarm
value of alarm setpoint
less than “0” and
hysteresis value greater
than“0” (Par.23 > 0)
N.B.: hysteresis value can’t
be less than “0”

15
11.4 Upper Deviation Alarm ( selection)
On On
Off Off
Pv
Time
A
larm
output
Comand Spv
> 0
Hysteresis
parameter
A
larm Spv
Upper deviation alarm
value of alarm setpoint
greater than “0” and
hysteresis value greater
than“0” (Par.23 > 0)
N.B.: hysteresis value can’t
be less than “0”
On On
Time
Off Off
A
larm
output
Pv
Comand Spv
> 0
Hysteresis
parameter
A
larm Spv
Upper deviation alarm
value of alarm setpoint
less than “0” and
hysteresis value greater
than“0” (Par.23 > 0)
N.B.: hysteresis value can’t
be less than “0”
16
11.5 Lower Deviation Alarm ( selection)
OnOn
Time
Off Off
A
larm
output
Pv
Comand Spv
> 0
Hysteresis
parameter
A
larm Spv
Lower deviation alarm
value of alarm setpoint
greater than “0” and
hysteresis value greater
than “0”
(Par.23 > 0).
N.B.: hysteresis value can’t
be less than “0”
On On
Time
Off Off
Comand Spv
Alarm
output
Pv
> 0
Hysteresis
parameter
A
larm Spv
Lower deviation alarm
value of alarm setpoint
less than “0” and
hysteresis value greater
than “0”
(Par.23 > 0).
N.B.: hysteresis value can’t
be less than “0”

17
12 - MODIFY CONFIGURATION PARAMETERS
The configuration menu of the unit is password protected to
prevent unauthorised access to the instrument set-up.
Password cannot be modified.
Press Display Do
1
After 5 seconds display
shows , first digit
on the left is flashing.
on ATR141
2
Increase first digit to “1” Press to reach
following digit and
enter configuration
password “123” for
ATR121
or “1234” for ATR141
3
Display shows first
configuration parameter
for ATR121
for ATR141
4
The arrow-keys allow
the movement through
the configuration table
in both forward and
backward directions.
Select parameter to
modify, press to
visualize it and use
arrow keys to modify
value.

18
13 - CONFIGURATION PARAMETERS
RangeP Display Description
ATR121 ATR141 Description
Control Q1
Alarm Q2 (default)
Control Q1
Alarm SSR
Control SSR
Alarm Q1
Control Q2
Alarm Q1
1
ATR121
ATR141
Select type
of control
output
Open Q1
Close Q2 (SSR
on versions with
RS485)
TC type K
-260…1360 °C
(default)
TC type S
-40…1760°C
TC type R
-40…1760°C
TC type J
-200…1200°C
Pt100-200..600°C
Pt100-200..140°C
Ni100 -60..180°C
Ntc 10KΩ
-40…125°C
Ptc 1KΩ
-50…150°C
2
Select type
of connected
sensor
only for
AD models :
To assure
optimal working
of the unit, use
ground-isolated
sensors.
Otherwise use
single isolated
transformers for
each controller.
Pt500-
100…600°C

19
Pt1000
-100…600°C
0…10V
0…20mA
4…20mA
Potenziometer
≤6KΩ
Potenziometer
≤150KΩ
no decimal point
(default)
1 decimal point
2 decimal points
3
Select
position
decimal point
----------- 3 decimal points
4
Lower limit
selectable for
setpoint
value
-199..
+999
digit
-999..
+9999
digit
Degrees for
temperature
sensors Digits
for linear signals
and
potentiometers
(default 0)
5
Upper limit
selectable for
setpoint
value
-199…
+999
digit
-999…
+9999
digit
Degrees for
temperature
sensor. Digits for
linear signals
and
potentiometers
(default: 999 for
ATR121 and
1750 for
ATR141)

20
6 Lower limit signals V/mA
Example: for
input
4…20mA,
enter on this
parameter the
value
corresponding
to 4mA
-199…
+999
digit
-999…
+9999
digit
(default 0)
7 Upper limit
signals V/mA
Example: for
input
4…20mA,
enter on this
parameter the
value
corresponding
to 20mA
-199…
+999
digit
-999…
+9999
digit
(default 999)
Disabled
(default)
Standard
virtual zero
stored
8
ATR121
ATR141
Function
Latch On
(Automatic
setting of
limits for
potentio-
meters and
linear signals)
virtual zero at
start