Pixsys ATR244 User manual

ATR244
Controller / Regolatore
Quick start guide - Guida breve all’installazione

Table of contents
1 Safety guide lines......................................................................................................................................................... 5
2 Model Identification.................................................................................................................................................... 5
3 Technical Data.............................................................................................................................................................. 5
3.1 General Features .......................................................................................................................................... 5
3.2 Hardware Features ...................................................................................................................................... 6
3.3 Software Features ........................................................................................................................................ 6
4 Dimensions and Installation..................................................................................................................................... 7
5 Electrical wirings .......................................................................................................................................................... 7
5.1 Wiring diagram............................................................................................................................................. 8
6 Display and Key Functions....................................................................................................................................... 12
6.1 Numeric Indicators (Display)................................................................................................................... 12
6.2 Meaning of Status Lights (Led)................................................................................................................ 12
6.3 Keys................................................................................................................................................................ 12
7 Dual input mode........................................................................................................................................................ 13
7.1 Selection of process value related to the command output and to the alarms.......................... 13
7.2 Remote setpoint by analogue input...................................................................................................... 13
7.3 Remote setpoint by serial input .............................................................................................................. 14
8 Controller Functions.................................................................................................................................................. 14
8.1 Modification of main and alarm setpoint value ................................................................................ 14
8.2 Automatic Tune .......................................................................................................................................... 14
8.3 Manual Tune................................................................................................................................................ 14
8.4 Tuning once ................................................................................................................................................. 15
8.5 Synchronized tuning ................................................................................................................................. 15
8.6 Digital input functions.............................................................................................................................. 15
8.7 Automatic / Manual regulation for % output control....................................................................... 16
8.8 Heater Break Alarm on CT (current transformer - only on ATR244-23xx-T) ................................. 16
8.9 Dual Action (Heating-Cooling)............................................................................................................... 17
8.10 LATCH ON Function ................................................................................................................................... 18
8.11 Soft-Start Function..................................................................................................................................... 19
8.12 Retransmission function on analogue output.................................................................................... 19
9 Serial communication .............................................................................................................................................. 19
10 Reading and configuration through NFC ............................................................................................................ 24
11 Access configuration .................................................................................................................................................25
11.1 Loading default values .............................................................................................................................25
11.2 Parameters list functioning .....................................................................................................................25
12 Table of Configuration Parameters ....................................................................................................................... 26
13 Alarm Intervention Modes....................................................................................................................................... 63
14 Table of Anomaly Signals.........................................................................................................................................65

Indice degli argomenti
1 Norme di sicurezza ....................................................................................................................................................72
2 Identificazione di modello.......................................................................................................................................72
3 Dati tecnici...................................................................................................................................................................72
3.1 Caratteristiche generali ............................................................................................................................72
3.2 Caratteristiche Hardware.........................................................................................................................73
3.3 Caratteristiche software...........................................................................................................................73
4 Dimensioni e installazione ...................................................................................................................................... 74
5 Collegamenti elettrici................................................................................................................................................ 74
5.1 Schema di collegamento.......................................................................................................................... 75
6 Funzione dei visualizzatori e tasti..........................................................................................................................79
6.1 Indicatori numerici (display)....................................................................................................................79
6.2 Significato delle spie di stato (Led).........................................................................................................79
6.3 Tasti................................................................................................................................................................79
7 Modalità doppio ingresso........................................................................................................................................80
7.1 Selezione grandezza correlata al comando e agli allarmi ..............................................................80
7.2 Setpoint remoto da ingresso analogico ...............................................................................................80
7.3 Setpoint remoto da ingresso seriale ...................................................................................................... 81
8 Funzioni del regolatore.............................................................................................................................................81
8.1 Modifica valore setpoint principale e di allarme................................................................................ 81
8.2 Tuning automatico .................................................................................................................................... 81
8.3 Tuning manuale ......................................................................................................................................... 81
8.4 Tuning once .................................................................................................................................................82
8.5 Tuning sincronizzato.................................................................................................................................82
8.6 Funzioni da Ingresso digitale ..................................................................................................................82
8.7 Regolazione automatico / manuale del controllo % uscita ............................................................83
8.8 Heater Break Alarm su CT (Trasformatore Amperometrico - solo ATR244-23xx-T)....................84
8.9 Funzionamento in doppia azione (caldo-freddo)..............................................................................84
8.10 Funzione LATCH ON...................................................................................................................................85
8.11 Funzione Soft-Start ....................................................................................................................................86
8.12 Funzione ritrasmissione su uscita analogica.......................................................................................86
9 Comunicazione Seriale.............................................................................................................................................86
10 Lettura e configurazione via NFC........................................................................................................................... 91
11 Accesso alla configurazione....................................................................................................................................92
11.1 Caricamento valori di default .................................................................................................................93
11.2 Funzionamento della lista parametri....................................................................................................93
12 Tabella parametri di configurazione.....................................................................................................................93
13 Modi d’intervento allarme.....................................................................................................................................129
14 Tabella segnalazioni anomalie ............................................................................................................................ 131
Index des sujets
1 Règles de sécurité.....................................................................................................................................................139
2 Identification du modèle........................................................................................................................................139
3 Données techniques................................................................................................................................................139
3.1 Caractéristiques générales.....................................................................................................................139
3.2 Caractéristiques Hardware ....................................................................................................................140
3.3 Caractéristiques Software......................................................................................................................140
4 Dimensions et Installation..................................................................................................................................... 141
5 Raccordements électriques ................................................................................................................................... 141
5.1 Plan des connexions ................................................................................................................................142

User manual - ATR244 - 5
Introduction
The process controller ATR244 stands out for the bright display which ensures optimal visibility and
increased level of information for the operator beside a scrolling Help function.
ATR244 relies on Pixsys flagship programming mode by NFC/RFID technology with dedicated App
MyPixsys for Android devices (same already used for Pixsys signal converters and STR indicators) not
requiring wirings and power supply, allowing quick set-up/updates on site.
Availability include a model with dual analogue input and dual analogue output for maximum
flexibility of applications. It is possible to achieve two separate heating/cooling PID control loops in
one device or to handle mathematical operations between two process values.
The outputs can be selected as command/multiple alarm modes/analogue retransmission. Serial
communication standard is RS485 with Modbus RTU/Slave protocol. Useful power supply with
extended range 24 to 230VAC / VDC with galvanic insulation of the net for the single loop version,
while the model with double analogue input provides two versions: 115 / 230 VAC or 24 VAC / VDC.
1 Safety guide lines
Read carefully the safety guidelines and programming instructions contained in this manual before
using/connecting the device. Disconnect power supply before proceeding to hardware settings or
electrical wirings. Only qualified personnel should be allowed to use the device and/or service it and
in accordance to technical data and environmental conditions listed in this manual.
Do not dispose electric tools together with household waste material.
In observance European Directive 2002/96/EC on waste electrical and electronic equipment and its
implementation in accordance with national law, electric tools that have reached the end of their life
must be collected separately and returned to an environmentally compatible recycling facility.
2 Model Identification
The ATR244 series includes 4 versions:
Models with power supply 24..230 VAC/VDC ±15% 50/60 Hz – 6 Watt/VA
ATR244-12ABC 1 analogue input + 2 relays 5 A + 2 SSR + 2 D.I. + 1 analogue output V/mA
ATR244-12ABC-T 1 analogue input + 2 relays 5 A + 2 SSR / D.I. + 1 analogue output V/mA + RS485
Model with power supply 24 VAC/VDC ±15% 50/60 Hz – 6 Watt/VA
ATR244-23A-T 2 analogue input + 3 relays 5 A + 2 SSR + 2/4 D.I. + 2 analogue output V/mA +
RS485 + CT
Model with power supply 115..230 VAC ±15% 50/60 Hz – 6 Watt/VA
ATR244-23BC-T 2 analogue input + 3 relays 5 A + 2 SSR + 2/4 D.I. + 2 analogue output V/mA +
RS485 + CT
3 Technical Data
3.1 General Features
Displays 4 display 0,52’’, 5 display 0,30’’
Operating
temperature Temperature: 0-45 °C -Humidity 35..95 uR%
Sealing IP65 front panel (with gasket)
IP20 box and terminals
Material Box and front panel: PC UL94V2 self-extinguishing
Weight Approx. 185 g

6 - ATR244 - User manual
3.2 Hardware Features
Analogue inputs
AI1 – AI2:
Configurable via software.
Input: Thermocouple
type K, S, R, J,T,E,N,B.
Automatic compensation of cold
junction from -25…85 °C.
Thermoresistances: PT100, PT500,
PT1000, Ni100, PTC 1K, NTC 10K (β
3435K)
Input V/mA: 0-1 V, 0-5 V, 0-10 V, 0-20 o
4-20 mA, 0-60 mV.
Pot. Input: 1...150 KΩ.
CT: 50 mA.
Tolerance (25 °C)
+/-0.2% ±1 digit (on F.s.) for thermocou-
ple, thermoresistance and V/mA.
Cold junction accuracy 0.1 °C/°C.
Impedence:
0-10 V: Ri>110 KΩ
0-20 mA: Ri<5 Ω
0-40 mV: Ri>1 MΩ
Relay outputs Configurable as command
and alarm output.
Contacts:
2 A - 250 VAC Resistive load.
SSR output Configurable as command
and alarm output. 12/24 V, 25 mA.
Analogue
outputs
Configurable as command
and alarm output or as retrasmission of
process / setpoints.
Configurable:
0-10 V with 40000 points +/-0.2% (on
F.s.)
4-20 mA con 40000 points +/-0.2% (on
F.s.)
Power-supply
For ATR244-12xxx:
Extended power-supply 24..230 VAC/
VDC ±15% 50/60 Hz
For ATR244-23A-T:
24 VAC/VDC ±15% 50/60 Hz
For ATR244-23BC-T:
115..230 VAC ±15% 50/60 Hz
For ATR244-12xxx:
Consumption: 6 Watt/VA
For ATR244-23xxx:
Consumption: 6 Watt/VA
3.3 Software Features
Regulation
algorithms
ON-OFF with hysteresis.
P, PI, PID, PD with proportional time
Proportional
band 0..9999°C o °F
Integral time 0,0..999,9 sec (0 excludes)
Derivative time 0,0..999,9 sec (0 excludes)
Controller
functions
Manual or automatic Tuning, selectable alarm, protection of command and alarm
setpoints.

User manual - ATR244 - 7
4 Dimensions and Installation
19
20
21
22
23
24
25
26
27
28
FNC SET
ATR244
C1
C2 MAN
TUN REM
A2A1 A3
48 mm 80 mm
8
48 mm
Memory Card USB
(optional)
Cod. 2100.30.013
Spessore suggerito
2 ÷6mm
Suggested thickness / Épaisseur suggérée
USB
Dima di foratura
46 x 46 mm
Frontal panel
cut-out
Trou de panneau
5 Electrical wirings
This controller has been designed and manufactured in conformity to Low Voltage Directive 2006/95/
EC , 2014/35/EU (LVD) and EMC Directive 2004/108/EC, 2014/30/EU (EMC). For installation in industrial
environments please observe following safety guidelines:
• Separate control line from power wires.
• Avoid proximity of remote control switches, electromagnetic contactors, powerful engines.
• Avoid proximity of power groups, especially those with phase control.
• It is strongly recommended to install adequate mains filter on power supply of the machine where
the controller is installed, particularly if supplied 230Vac.
The controller is designed and conceived to be incorporated into other machines, therefore CE
marking on the controller does not exempt the manufacturer of machines from safety and conformity
requirements applying to the machine itself.

8 - ATR244 - User manual
5.1 Wiring diagram
ATR244-12ABC ATR244-12ABC-T
10
9
11
12
13
14
15
16
17
18
19
TC
V/mA
PTC
NTC PT100 NI100
+
–
AO1
V/mA
+V
DO2
(PNP)
DO1
(PNP)
DI2
(PNP)
DI1
(PNP)
(Rear view)
Q1 2A 230V Resistive 1/8HP
SUPPLY
24...230V
AC/DC
Q2 2A 230V Resistive 1/8HP
8
7
6
5
4
2
3
1
–
+
–
+
PTC
NTC PT100 NI100
+
–
+
–
(Rear view)
Q1 2A 230V Resistive 1/8HP
SUPPLY
24...230V
AC/DC
Q2 2A 230V Resistive 1/8HP
8
7
6
5
4
2
3
1
TC
V/mA
–
+
–
+
AO1
V/mA
+V
DI/O2
(PNP)
DI/O1
(PNP)
RS485
10
9
11
12
13
14
15
16
17
18
19
ATR244-23A-T ATR244-23BC-T
PTC
NTC PT100 NI100 PTC NTC PT100 NI100
+
–
+
–
(Rear view)
TC
V/mA
–
+
–
+
TC
V/mA
–
+
–
+
20
19
21
22
23
24
25
26
27
28
9
10
11
12
13
14
15
16
17
18
RS485+
(B)
DI3
(PNP)
DI4
(PNP) CT
+V
RS485-
(A)
AO1
V/mA
AO2
V/mA
+V
AI1 AI2
Q1
2A 230V
Resistive
1/8HP
8
7
6
5
4
2
3
1
SUPPLY
24 VAC/DC
Q2
2A 230V
Resistive
1/8HP
Q3
2A 230V
Resistive
1/8HP
DI/O1
(PNP)
DI/O2
(PNP)
PTC
NTC PT100 NI100 PTC NTC PT100 NI100
+
–
+
–
(Rear view)
TC
V/mA
–
+
–
+
TC
V/mA
–
+
–
+
20
19
21
22
23
24
25
26
27
28
9
10
11
12
13
14
15
16
17
18
RS485+
(B)
DI3
(PNP)
DI4
(PNP) CT
+V
RS485-
(A)
AO1
V/mA
AO2
V/mA
+V
AI1 AI2
Q1
2A 230V
Resistive
1/8HP
8
7
6
5
4
2
3
1
Q2
2A 230V
Resistive
1/8HP
Q3
2A 230V
Resistive
1/8HP
SUPPLY
115...230
VAC
DI/O1
(PNP)
DI/O2
(PNP)
5.1.a Power Supply
SUPPLY
24...230
Vac/dc
1
2
For ATR244-12ABC and ATR244-12ABC-T
Switching power supply 24..230 VAC/VDC ±15% 50/60 Hz - 6 Watt/VA.
Galvanic insulation (on all versions).
SUPPLY
24V
Vac/dc
1
2
For ATR244-23A-T
Switching power supply 24 VAC/VDC ±15% 50/60 Hz - 6 Watt/VA.
Galvanic insulation.
SUPPLY
115...230V
Vac
1
2
For ATR244-23BC-T
Switching power supply 115..230 VAC ±15% 50/60 Hz - 6 Watt/VA.
Galvanic insulation.

User manual - ATR244 - 9
5.1.b Analogue Input AI1
ATR244-12x
For thermocouples K, S, R, J, T, E, N, B.
• Comply with polarity
• For possible extensions, use compensated cable and terminals suitable for
the thermocouples used (compensated).
• When shielded cable is used, it should be grounded at one side only.
AI1 TC
Shield/Schermo
19
18
ATR244-23x
AI1 TC
Shield/Schermo
28
27
ATR244-12x
For thermoresistances PT100, Ni100.
• For the three-wire connection use wires with the same section.
• For the two-wire connection short-circuit terminals 17 and 19 (version
-12x) or 26 and 28.
• When shielded cable is used, it should be grounded at one side only.
RED/ROSSO
RED/ROSSO
WHITE/BIANCO
AI1
PT/NI100
Shield/Schermo
Rosso
Red
Bianco
White
Rosso
Red
19
18
17
ATR244-23x
AI1
PT/NI100
Shield/Schermo
Rosso
Red
Bianco
White
Rosso
Red
28
27
26
ATR244-12x
For thermoresistances NTC, PTC, PT500, PT1000 and linear potentiome-
ters.
When shielded cable is used, it should be grounded at one side only to avoid
ground loop currents.
AI1
Shield/Schermo
PTC/NTC
17
18
ATR244-23x
AI1
Shield/Schermo
PTC/NTC
26
27
ATR244-12x
For linear signals in Volt and mA
• Comply with polarity
• When shielded cable is used, it should be grounded at one side only to
avoid ground loop currents.
AI1 V
mA
+V
Shield/Schermo
18
16
19
ATR244-23x
AI1 V
mA
+V
Shield/Schermo
27
25
28

10 - ATR244 - User manual
5.1.c Analogue Input AI2 (only ATR244-23x)
AI2 TC
Shield/Schermo
18
17
For thermocouples K, S, R, J, T, E, N, B.
• Comply with polarity
• For possible extensions, use compensated cable and terminals suitable for
the thermocouples used (compensated).
• When shielded cable is used, it should be grounded at one side only.
AI2
PT/NI100
Shield/Schermo
Rosso
Red
Bianco
White
Rosso
Red
18
17
16
For thermoresistances PT100, Ni100.
• For the three-wire connection use wires with the same section.
• For the two-wire connection short-circuit terminals 16 and 18.
• When shielded cable is used, it should be grounded at one side only.
RED/ROSSO
RED/ROSSO
WHITE/BIANCO
AI2
Shield/Schermo
PTC/NTC
16
17
For thermoresistances NTC, PTC, PT500, PT1000 and linear potentiome-
ters.
When shielded cable is used, it should be grounded at one side only to avoid
ground loop currents.
AI2 V
mA
+V
Shield/Schermo
17
15
18
For linear signals in Volt and mA
• Comply with polarity
• When shielded cable is used, it should be grounded at one side only to
avoid ground loop currents.
5.1.d CT input (only ATR244-23x)
C.T.
22
23
To enable CT input, modify parameter 287 ct F.
• Input for 50 mA amperometric transformer.
• Sampling time 100 ms.
• Configurable by parameters.
5.1.e Digital inputs
12ABC 12ABC-T 23x
Digital inputs can be enabled by parameters.
Close pin
“DIx” on pin “+V” to enable digital input.
It is possible to put in parallel the digital inputs of different devices joining
togheter the ground pins (15).
13
DI2
(PNP)
14
DI1
(PNP)
15
16
+V
13
DI/O2
(PNP)
14
DI/O1
(PNP)
15
16
+V
20
DI3
(PNP)
DI/O2
(PNP)
DI/O1
(PNP)
DI4
(PNP)
21
22
23
24
25
+V
5.1.f Serial inputs (only ATR244-xxxxx-T)
ATR244-12ABC-T
Modbus RS485 communication.
RTU Slave with galvanic insulation.
It is recommended to use the twisted and shielded cable for communications.
RS485
Shield/Schermo
11
12
(B)
(A)
ATR244-23x
RS485
(B)
(A)
Shield/Schermo
19
9

User manual - ATR244 - 11
5.1.g Digital outputs
12ABC 12ABC-T 23x
SSR output for command or alarm.
Range 12 VDC/25 mA or 24 VDC/15mA selectable by parameter 282 v.out.
11
DO2
(PNP)
12
DO1
(PNP)
15
13
DI/O2
(PNP)
14
DI/O1
(PNP)
15
20
DI/O1
(PNP)
DI/O2
(PNP)
21
24
5.1.h Analogue output AO1
ATR244-12x
Linear output in mA or V(galvanically isolated) configurable as command,
alarm or retransmission of process-setpoint.
The selection mA or Volt for the linear output depends on the parameters
configuration.
AO1
V/mA
9
10
ATR244-23x
AO1
V/mA
10
11
5.1.i Analogue output AO2 (only ATR244-23xx-T)
AO2
V/mA
12
13
Linear output in mA or V(galvanically isolated) configurable as command,
alarm or retransmission of process-setpoint.
The selection mA or Volt for the linear output depends on the parameters
configuration.
5.1.j Relay output Q1
Q1
2A 230V
Resistive
1/8HP
3
4
5
Capacity 2 A / 250 VAC for resistive loads.
See chart below.
5.1.k Relay output Q2 (only ATR244-12x)
Q2
2A 230V
Resistive
1/8HP
7
8
Capacity 2 A / 250 VAC for resistive loads.
See chart below.
5.1.l Relays output Q2 - Q3 (only ATR244-23xx-T)
Q2
Q3
2A 230V
Resistive
1/8HP
6
7
8
Capacity 2 A / 250 VAC for resistive loads.
See chart below.
Electrical endurance Q1, Q2 e Q3:
2 A, 250 VAC, resistive loads, 105operations.
20/2 A, 250 VAC, cosφ = 0.3, 105operations.

12 - ATR244 - User manual
6 Display and Key Functions
FNC SET
ATR244
C1
C2
MAN
TUN REM
A2A1 A3
3
15
4
2 1
5
6
11 12 13 14
7
8
9
10
6.1 Numeric Indicators (Display)
1123.4 Normally displays the process. During the configuration phase, it displays the
parameter being inserted.
2PRo b e Normally displays the setpoint. During the configuration phase, it displays the
parameter value being inserted.
6.2 Meaning of Status Lights (Led)
3C1 ON when the command output 1 is active. In case of motorized valve control it is ON
during valve opening and flashes during valve closing.
4C2 ON when the command output 2 is active. n case of motorized valve control it is ON
during valve opening and flashes during valve closing.
5A1 ON when alarm 1 is active.
6A2 ON when alarm 2 is active.
7A3 AON when alarm 1 is active.
8TUN ON when the controller is executing an auto-tuning cycle.
9MAN ON when "Manual" function is active.
10 REM ON when the controller communicates through serial. Flashes when the remote setpoint
is enabled.
6.3 Keys
11

• Increases the main setpoint.
• During configuration allows to scroll the parameters or the groups of parameters.
• Increases the setpoints.
12

• Decreases the main setpoint.
• During configuration allows to scroll the parameters or the groups of parameters.
• Decreases the setpoints.
13 SET
• Allows to visualize command and alarm setpoints.
• During configuration allows to enter the parameter to be modified and confirms the
variation.
14 FNC • Allows to enter the Tuning launch function, automatic/manual selection.
• During configuration works as exit key (ESCAPE).
15
c
• ON during the rising phase of the pre-programmed cycle;
d
• ON during the falling phase of the pre-programmed cycle;
c
d
• Both ON during parameter modification, when this is not a default value.

User manual - ATR244 - 13
7 Dual input mode
Each ATR401 model is provided with two analogue inputs: it is possible to do mathematic operations
between 2 measured process values, correlating obtained result to the command or alarm outputs, or
to give a process value as remote setpoint. It is also possible to use the controller for 2 independent
control loops.
7.1 Selection of process value related to the command
output and to the alarms
When second analogue input is enabled (par.18 sen.2 other than di sA b .) it is possible to choose the
process value to be related to command output, to alarms and to retransmission.
Following options are available:
• A . i n .1 : Value read by input AI1;
• A.i n . 2: Value read by input AI2;
• mean: Mean between inputs AI1 and AI2;
• di ff.: Difference between inputs: AI1-AI2;
• a b . di F: Difference between inputs as absolute value: AI1-AI2;
• Command 1 process must be selected on parameter 36 c . P r.1
• Command 2 process must be selected on parameter 55 c.Pr.2
• The process related to the alarms must be selected on par. 124 a .1 . p r. for the alarm 1, on par. 142
a .2. p r. for the alarm 2, on par. 160 a .3. p r. for the alarm 3, and on par. 178 a .4. p r. for the alarm 4, on par.
196 a .5. p r. for the alarm 5 and on par. 214 a . 6. p r. for the alarm 6.
• The value to be retransmitted must be selected on par. 299 r t m .1 and/or on par. 308 rt m .2.
It is possible to choose what to visualize on display 2 selecting par. 278 ui . d .2.
7. 2 Remote setpoint by analogue input
It is possible to enable remote setpoint function setting enab. or en. ts t. on par. 56 rem .s.
4...20mA
0...10V
Remote
Setpoint
ATR244
ATR244
PL500 PLE500-6AD
PLC OUTPUT Probe
AI1
Control loop
OUT
OUT
Probe
AI1
AI2
Remote
Setpoint
AI2
FNC SET
ATR244
C1
C2
MAN
TUN REM
A2A1 A3
FNC SET
ATR244
C1
C2
MAN
TUN REM
A2A1 A3
Control loop
DP1
CN3
USB1
CN1
CN2
.4 .5
.6
.7
.3
.2
.1
.0
.4
.5 .6
.7
.3
.2
.1
.0
+0
+1
1 2 34567 8 9 10 12
QI.0
QI.1
QI.2
QI.3
QI.4
QI.5
QI.6
QI.7
13 14 15 16 17 18 19 20 21 22 23 24
AGND
(0V)
AI0
L+0
AI1
QI.0
QI.1
QI.2
QI.3
QI.4
QI.5
QI.6
QI.7
L+1
AQ.0 AQ.1
AGND
(0V)
In this example the command setpoint is the value read on second analogue input AI2: on par. 55 c. p r. 2
it is selected the input that determines the setpoint.
The Remote Setpoint function is active only selecting A . i n .1 or A.i n . 2 on par. 55 c. p r.2.
Selecting en . ts t. on par. 56 rem .s. it is possible to switch from remote to local setpoint pressing SET for
1 second. The selection is stored even after the subsequent device restarts.
In remote setpoint mode the led REM is ON, it flashes when switching to local setpoint mode.
The decimal point setting parameter for the image input (or remote setpoint) is locked and modifies
automatically when the command input decimal point is changed.

14 - ATR244 - User manual
7. 3 Remote setpoint by serial input
It is possible to enable remote setpoint function selecting en.ser. or en .s e. t. on par. 56 rem.s. The
remote setpoint must be written on the word modbus 1249 for the command 1 and 1250 for the
command 2 (with tenth of degree if the command process is a temperature sensor).
It is possible to switch from remote to local sepoint pressing SET for 1 second. In remote setpoint mode
the led REM is ON (if there is serial communication), it flashes when switching to local setpoint mode.
At restarting the controller keeps set in remote setpoint mode (the setpoint value is initialized to 0).
8 Controller Functions
8.1 Modification of main and alarm setpoint value
Setpoint value can be modified from keyboard as follows:
Press Display Do
1


Value on display 2 changes. Increases or decreases the main setpoint
value.
2SET Visualizes the other setpoints on display 1.
Display 2 shows the setpoint type.
3


Value on display 1 changes. Increases or decreases the alarm setpoint
value.
8.2 Automatic Tune
Automatic tuning procedure allows a precise regulation without delving into the PID regulation
algorithm. Selecting Auto on par. 73 t u n .1 (for the regulation loop 1), or on par. 98 tu n.2 (for the
regulation loop 2), the controller analyzes the proces oscillations and optimizes the PID parameters.
Led TUN flashes.
If the PID parameters are not yet selected, at the device switch-on, it is automatically launched the
manual Tuning procedure described into the next paragraph.
8.3 Manual Tune
Manual procedure allows the user greater flexibility to decide when to update
PID algorithm parameters. During the manual tuning, the device generates a step to analyze the
system inertia to be regulated and, according to the collected data, modifies PID parameters.
After selecting Manu. on par. 73 t u n .1 , or on par. 98 tun.2, the procedure can be activated in three ways:
• Running Tuning by keyboard:
Press FNC until display 2 shows tunE with display 1 on dis. and then press SET: display 1 shows Enab.
Led TUN switches ON and the procedure starts.
• Running Tuning by digital input:
Select tunE on par. 231 d . i .1 . F. (or on par. 239 d.i .2.F., par. 247 d . i . 3 . F. , par. 255 d .i .4. F.). At first activation
of digital input (commutation on front panel) led TUN led switches on and at second activation
switches off.
• Running Tuning by serial input:
Write 1 on word modbus 1216 (command 1) or 1217 (command 2): led TUN switches ON and the
procedure starts. Write 0 to stop the tuning.
To avoid an overshoot, the treshold where the controller calculates new PID parameters is determined
by this operation:
Tune threshold = Setpoint -
“Set Deviation Tune” (par. 74 s.d.t.1 or par. 99 s.d.t.2)
Ex.: if the sepoint is 100.0∞C and the Par.32 s.d.t.1 is 20.0∞C the threshold to calculate PID parameters
is (100.0 - 20.0) = 80.0∞C.
For a greater precision on PID parameters calculation it is suggested to start the manual tuning
procedure when the process deviates from the setpoint.

User manual - ATR244 - 15
8.4 Tuning once
Set once on parameter 73 t u n .1 , or on parameter 98 tu n .2.
Autotuning procedure is executed only once at next ATR244 restart. If the procedure doesn’t work, will
be executed at next restart.
8.5 Synchronized tuning
Set sYNch . on parameter 73 t u n .1 or on parameter 98 tun.2.
This procedure has been conceived to calculate correct PID values on multi-zone systems, where each
temperature is influenced by the adjacent zones.
Writing on word modbus 1216 (for regulation loop 1) or 1217 (for regulation loop 2) the controller
works as follows:
Word value Action
0Tune off
1 Command output OFF
2 Command output ON
3Tune active
4Tune completed: command output OFF (read only)
5Tune not available: softstart function enabled (only reading)
Here below the functioning for regulation loop 1: the master switches-off or turns-on all zones (value
1 or 2 on word 1216) for a time long enough to create inertia on the system.
At this point the autotuning is launched (value 3 on word 1216). The controller executes the procedure
for the calculation of the new PID values. When the procedure ends, the controller switches off the
command output and selects the value 4 on word 1216. The master, who will always read the word
1216, will control the various zones and when all will have finished, will bring to 0 the value of word
1216: the various devices will regulate the temperature independently, with the new calculated values.
N.B.Themaster must read theIndex0x400E atleastevery 10seconds orthe controller will automatically
exit the autotuning procedure.
8.6 Digital input functions
The ATR244 functions related to digital inputs, can be enabled by parameters 231 d .i .1 . F. , 239 d.i.2.F., 247
d . i . 3 . F. and 255 d .i .4 . F. .
• 2t.Sw .: Two threshold setpoint modification: with digital input active the ATR244 regulates on SET2,
otherwise reulates on SET1;
• 2t.S w .i .: Modification of 2 setpoints by digital input with impulse command;
• 3 t .S w .i .: Modification of 3 setpoints by digital input with impulse command,
• 4 t .S w .i .: Modification of 4 setpoints by digital input with impulse command,
• st. /St.: Start / Stop of the controller by digital input with impulse command,
• ru n .: The regulation is enabled only with digital input active,
• HoLd: With digital input active the conversion is locked (visualization maintenance function);
• tune: Enables/disables the Tuning if par. 73 t u n .1 or par. 98 tu n .2 is selected as manu.;
• au.ma.i.: If par. 48 a.ma.1. or par. 67 a.ma.2. is selected as enab. or en.sto. , with impulse command on
digital input, the ATR244 switches the related regulation loop, from automatic to manual and vice
versa.
• au.ma.c.: If par. 48 a.ma.1. or par. 67 a.ma.2. is selected as enab. or en.sto. the ATR244 switches to manual
the related regulation loop, with digital input active, otherwise the regulation is automatic.
• Act. ty .: On the regulation loop selected for this function (par. 234 d . i .1 . r . or 242 d .i . 2. r. or 250 d .i .3. r.
or 258 d .i .4. r.), the ATR244 execute a cooling type regulation with digital input active, otherwise the
regulation is of heating type;
• A.i . 0: Zero tare function: brings the related analogue input to 0. The analogue input is selected on
par. 233 d .i .1 . p . or 241 d .i .2. p. or 249 d .i .3. p. or 257 d .i .4. p .
• M. reS.: Allows the reset of the output if manual reset is active for the alarms and for the command
outputs selected on par. 234 d . i .1 . r. or 242 d .i . 2. r. or 250 d .i .3. r. or 258 d .i .4 . r. ;
• t.1.run: If timer 1 is enabled (par. 328 t m r.1 different from di s a b .), with digital input active, the timer is

16 - ATR244 - User manual
switched to RUN, otherwise is kept in STOP;
• t .1 . s . e . : If timer 1 is enabled (par. 328 t m r .1 different from di s a b .), acting on the digital input, the status
of the timer switches from STOP to RUN e vice versa;• t .1 . s t a . : If il timer 1 is enabled (par. 328 t m r.1
differnet from di s a b .), acting on the digital input, the timer is switched to RUN;
• t .1 . e n d . : If il timer 1 is enabled (par. 328 t m r.1 differnet from di s a b .), acting on the digital input, the
timer is switched to STOP;
• t.2.run: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), with digital input active, the timer
is switched to RUN, otherwise is kept in STOP;
• t. 2. s . e .: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), acting on the digital input, the
status of the timer switches from STOP to RUN e vice versa;
• t. 2. s t a .: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), acting on the digital input, the
timer is switched to RUN;
• t .2. e n d .: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), acting on the digital input, the
timer is switched to STOP;
• Lo . cfG.: With digital input active, the access to setpoint configuration/modification is locked;
• reM.s . e.: If on par. 56 rem .s. it is selected enab. or en.ser.), with digital input active the remote setpoint
is enabled, otherwise the setpoint is local. On par. 234 d .i .1 . r. or 242 d .i .2. r. or 250 d .i .3. r. or 258 d .i .4. r.
it is necessary to select the reference regulation loop.
8.7 Automatic / Manual regulation for % output control
This function allows to switch from automatic functioning to manual command of the output
percentage.
With par. 48 A . m a .1 . (for regulation loop 1) or par. 67 A. m a .2. (for regulation loop 2) it is possible to select
two modes.
1 First selection (enab.) allows to eneble with FNC the writing p.--- on display 1, while on display 2 is
showed autom.
Press SET to visualize manu.; it’s now possible, during the process visualization, modify through the
keys
c
and
d
the output percentage. To back to automatic, with the same procedure, select autom.
on display 2: immediately led MAN switches off and functioning backs to automatic.
2 Second selection (en.sto.) enables the same functioning but with two important variants:
• If there is a temporary power failure or after switch-off, the manual functioning as well as the
previous output percentage value will be maintained at restarting.
• If the sensor breaks during automatic functioning, the controller switches to manual mode while
maintaining the output percentage command unchanged as generated by the PID immediately
before breakage.
Ex: on an extruder the command in percentage of the resistance (load) is maintained also in case of
input sensor failure.
8.8 Heater Break Alarm on CT (current transformer - only
on ATR244-23xx-T)
This function allows to measure load current to manage an alarm during a malfunctioning with power
in short circuit, always open or partial break of the charge. To enable this function set 50 Hz or 60 Hz on
par. 287 ct F. and the value of the connected transfomer, on par. 288 ct v..
• Seletct on par. 289 H.b.a.r. the regulation loop referred to the current measure and the Heater Break
Alarm intervention.
• Select on par. 290 H.b.a.t. the Heater Break Alarm intervention threshold in Ampere.
• Select on par. 291 o cu.t. the intervention threshold in Ampere to control the overcurrent.
• Select on par. 292 H.b.a.d. the delay time in seconds for the Heater Break Alarm intervention.
• It is possible to associate an alarm, selecting H.b.a. on par. 123 a L .1 . F . on par. 141 a L.2. F. or par. 159 a L . 3 . F.
or par. 177 a L.4. F. or par. 195 a L . 5 . F. or par. 213 aL.6.F.
It is possible to visualize on display 2 the average current, selecting AMPEr. on par. 278 vi . d .2.
Selecting 0 on par. 290 H. b .A. t. it is possible to visualize the current consumption without generating
an Heater Break Alarm.

User manual - ATR244 - 17
8.9 Dual Action (Heating-Cooling)
ATR244 is suitable also for systems requiring a combined heating-cooling action.
The command output has to be configured as PID for Heating (Par. 38 a c . t .1 or Par. 57 a c. t.2 = Heat and
P. b . 1 or P. b . 2 greater than 0), and one of the alarms (A L .1 . F . , AL.2. f., AL.3. f. , A L.4. f . , AL.5. f. or A L. 5 . F. ) has to be
configured as c o o L.
The command output must be connected to the actuator responsible for heating, while the alarm will
control cooling action.
Parameters to be configured for the heating PID are:
a c . t .1 or a c. t.2 = Heat Command output action type (Heating);
P. b . 1 or p. b . 2: Heating proportional band;
i . t. 1 or i . t. 2: Integral time of heating and cooling;
d . t. 1 or d . t. 2: Derivative time of heating and cooling;
c. t. 1 or c. t. 2: Heating time cycle.
Parameters to be configured for the cooling PID related to regulation loop 1 and alarm 1 are:
A L .1 . F. = c o o L. Alarm 1 selection (Cooling);
p.b.m.1: Proportional band multiplier;
o.d.b.1: Overlapping / Dead band;
c. c. t.1: Cooling time cycle.
Par. p.b.m.1 (that renges from 1.00 to 5.00) determines the proportional band of
cooling action basing on the formula:
Proportional band for cooling action = p. b . 1 x p.b.m.1.
This gives a proportional band for cooling which will be the same as heating band if p.b.m.1 = 1.00, or 5
times greater if p.b.m.1 = 5.00.
Integral and derivative time are the same for both actions.
Par. o.d.b.1 determines the percentage overlapping between the two actions. For systems in which
the heating output and cooling output must never be simultaneously active a Dead Band (o.d.b.1 ≤ 0),
must be configured, vice versa you can configure an overlapping (o.d.b.1 > 0).
The following figure shows an example of dual action PID (heating-cooling) with i. t. 1 = 0 e d. t. 1 = 0.
1
ACTIVE
ACTIVE
SPV
PV
 x  = COOL
 x  = COOL
 x  = COOL
 < 0
 = 0
 > 0
 (HEAT)
 (HEAT)
 (HEAT)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
SPV
PV
ACTIVE
ACTIVE
SPV
PV
ACTIVE
ACTIVE
2
ACTIVE
ACTIVE
SPV
PV
 x  = COOL
 x  = COOL
 x  = COOL
 < 0
 = 0
 > 0
 (HEAT)
 (HEAT)
 (HEAT)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
SPV
PV
ACTIVE
ACTIVE
SPV
PV
ACTIVE
ACTIVE

18 - ATR244 - User manual
3
ACTIVE
ACTIVE
SPV
PV
 x  = COOL
 x  = COOL
 x  = COOL
 < 0
 = 0
 > 0
 (HEAT)
 (HEAT)
 (HEAT)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
SPV
PV
ACTIVE
ACTIVE
SPV
PV
ACTIVE
ACTIVE
Parameter c. c.T.1 has the same meaning of cycle time for heating action c. t. 1.
Parameter c o . f .1 (Cooling Fluid) pre-selects the proportional band multiplier p.b.m.1and the cooling PID
cycle time c. c.T.1 according to cooling fluid type:
c o . f .1
Cooling fluid type
p.b.m.1 c. c. t.1
Ai r Air 1.00 10
oi L Oil 1.25 4
H2o Water 2.50 2
Once parameter c o . f .1 has been selected, the parameters p.b.m.1, o.d.b.1 and c. c.T.1 can be however
modified.
8.10 LATCH ON Function
For use with input pot. and with linear input (0..10 V, 0..40 mV, 0/4..20 mA) t is possible to associate start
value of the scale (par. 4 L.L.i .1 or par. 21 L.L.i .2) to the minimum position of the sensor and value of the
scale end (par. 5 u.L.i.1 or par. 22 u.L.i.2) to the maximum position of the sensor (par. 10 L t c .1 or par. 27
Lt c.2 configured as stndr).
It is also possible to fi x the point in which the controller will display 0 (however
keeping the scale range between L. L.i .1 / L.L.i .2 and u.L.i. 1/ u .L.i.2) using the
“virtual zero” option by
selectin u.0.sto. or u.0.t.on. on par. 10 L t c .1 or 27 Lt c.2. Selecting u.0.t.on. the virtual zero must be reset at
each switching on; selecting u.0.sto.the virtual zero will remain fixed once calibrated. To use the LATCH
ON function, configure the par. L t c .1 or27 Lt c. 2.1
Then refer to the following table for the calibration procedure:
Press Display Do
1FNC Exit parameters configuration. Display 2
visualizes writing La t c .
Place the sensor on minimum operating
value (corresponding to L.L.i .1 / L.L.i .2)
2

Store value on minimum.
Display shows Lo w .
Place sensor on maximum operating value
(corresponding to u.L.i.1 / u.L.i.2).
3

Store value on max.
Display shows Hi G h .
To exit standard proceeding press SET.
For
“virtual zero” setting, place the sensor to
zero point.
4FNC
Set virtual zero. Display shows zero.
If “Virtual zero at start” is selected, point 4
must be repeated at each starting.
To exit procedure press SET.
1 The tuning procedure starts by exiting the configuration after changing the parameter.

User manual - ATR244 - 19
8.11 Soft-Start Function
ATR244 is provided with two types of softstart selectable on parameter 264 SS. tY. ( “Softstart Type” ).
1 First selection (GrAd .) enables gradient softstart. AAt starting the controller reaches setpoint basing
on the rising gradient set on parameter 266 SS. G r. (
“Softstart Gradient” ) in Unit/hour (ex. °C/h). If
parameter 269 SS . ti . (
“Softstart Time” ) is diff erent to 0, at starting when the time selected on par.
269 is elapsed, the controller stops to follow the gradient and reaches setpoint with the maximum
power.
2 Second selection (PErc.) abilita enables output percentual softstart. On par. 268 SS. tH. it is possible to
set the threshold under which starts the softstart (
“Softstart Threshold” ). On par. 267 SS.PE. ( “Softstart
Percentage”
) an output percentage is selectable (from 0 to 100), which controller keeps until the
process exceeds the threshold set on par. 268 or until the time in minutes set on par. 269 SS . ti .
(
“Softstart Time” word 2084).
If the Sof-Start function is active the automatic/manual Tuning function cannot be activated.
8.12 Retransmission function on analogue output
If not used as command, the analogue output can be used to retransmit process/ setpoint/ current
read by the C.T. input/ output percentage.
Select on parameter 298 r t M .1 (“Retransmission 1”) or on parameter 308 rtM.2 (“Retransmission 2”) the
value to be retransmitted and on parameter 299 r .1 . t Y . (“Retransmission 1 Type”) or on parameter 309
r.2. tY. (“Retransmission 2 Type”) the output type.
It is possible also to select on parameters 300 r.1. L.L. and 301 r.1 . u . L . or 310 r.2.L. L. and 311 r.2. u .L. the input
value rescale limites.
9 Serial communication
ATR244-xxxxx-T is equipped with RS485 and can receive/broadcast data via serial communication
using MODBUS RTU protocol. The device can only be configured as a Slave. This function enables the
control of multiple controllers connected to a supervisory system / SCADA.
Each controller responds to a Master query only if the query contains the same address as parameter
318 sL. a d . (
“Slave Address” ).
The addresses permitted range from 1 to 254 and there must not be controllers with the same address
on the same line.
Address 255 can be used by the Master to communicate with all the connected equipment (broadcast
mode), while with 0 all the devices receive the command, but no response is expected.
The baud rate is selected on parameter 319 bd . rt. (
“Baud Rate” ).
ATR244 can introduce a delay (in milliseconds) of the response to the master request. This delay must
be set on parameter 321 se.d e. (
“Serial Delay” ).
Each parameter modification is saved by the controller in the EEPROM memory (100000 writing cycles),
while the setpoints are saved with a delay of 10 seconds after the last modification.
Changes made to words that are different from those reported in the following table can lead to
malfunction.
Modbus RTU protocol features
Baud-rate
Selectable on parameter 319 bd . rt.
1200bit/s 28800bit/s
2400bit/s 38400bit/s
4800bit/s 57600bit/s
9600bit/s 115200bit/s
19200bit/s
Format
Selectable on parameter 320 s. p. p.
8N1 8N2
8E1 8E2
8O1 8O2

20 - ATR244 - User manual
Modbus RTU protocol features
Supported
functions
WORD READING (max 50 word) (0x03, 0x04)
SINGLE WORD WRITING (0x06)
MULTIPLE WORDS WRITING (max 50 word) (0x10)
Here below a list of all available addresses and supported functions:
RO = Read Only R/W = Read/Write WO = Write Only
Modbus
address Description Read
Write
Reset
value
0Device type RO 47x
1Software version RO Flash
2Boot version RO Flash
3 Slave Address RO Eepr/dip
6Baud rate RO Eepr/dip
50 Slave address automatic learning WO -
51 System code comparison for slave address automatic learning WO -
500 Loading default values (write 9999) RW 0
501 Restart ATR244 (write 9999) RW 0
502 Setpoint storing delay time RW 10
503 Parameters storing delay time RW 1
1000 AI1 value (degrees with tenth) RO -
1001 AI2 value (degrees with tenth) RO -
1002 Average between AI1 and AI2 [(AI1 + AI2) /2] (degrees with tenth) RO 0
1003 Difference between AI1 and AI2 (AI1 - AI2) (degrees with tenth) RO 0
1004 Module of the difference between AI1 and AI2 (|AI1 - AI2|) (degrees with
tenth) RO 0
1005 Sum of AI1 and AI2 (AI1 + AI2) (degrees with tenth) RO 0
1006 Real setpoint (gradient) of the regulation loop 1 RO 0
1007 Real setpoint (gradient) of the regulation loop 2 RO 0
1008
Alarms status (0=absent, 1=present)
Bit0 = Alarm 1 Bit3 = Alarm 4
Bit1 = Alarm 2 Bit4 = Alarm 5
Bit2 = Alarm 3 Bit5 = Alarm 6
RO 0
1009
Error flags 1
Bit0 = AI1 process error (sensor 1)
Bit1 = AI2 process error (sensor 2)
Bit2 = Cold junction error
Bit3 = Safety error
Bit4 = Generic error
Bit5 = Hardware error
Bit6 = Error H.B.A. (partial ropture of the load)
Bit7 = Error H.B.A. (SSR in short circuit)
Bit8 = Overcurrent error
Bit9 = Parameters out of range error
Bit10= CPU eeprom writing error
Bit11= RFid eeprom writing error
Bit12= CPU eeprom reading error
Bit13= RFid eeprom reading error
Bit14= Eeprom calibrations bench corrupted
Bit15= Eeprom constants bench corrupted
RO 0