Pixsys DRR 245 User manual

2
Summary
1 Introduction...........................................................................................4
2 Model identification...............................................................................4
3 Technical data......................................................................................4
3.1 General features......................................................................................... 4
3.2 Hardware features...................................................................................... 5
3.3 Software features ....................................................................................... 5
4 Dimensions and installation..................................................................6
5 Electrical wirings...................................................................................7
5.1 Wiring diagram ........................................................................................... 7
6 Displays and keys functions ...............................................................11
6.1 Numeric Indicators (Displays) .................................................................. 11
6.2 Meaning of Status Lights (Led) ................................................................12
6.3 Keys.......................................................................................................... 12
7 Controller Functions ...........................................................................13
7.1 Modifying Main Setpoint and Alarm Setpoint Values ............................... 13
7.2 Auto-tune.................................................................................................. 13
7.3 Manual Tuning.......................................................................................... 13
7.4 Automatic Tuning...................................................................................... 14
7.5 Soft Start................................................................................................... 14
7.6 Automatic/Manual Regulation for % Output Control ................................ 15
7.7 Pre-programmed cycle............................................................................. 16
7.8 Memory Card............................................................................................ 17
7.9 Loading default values.............................................................................. 18
8 LATCH ON Function...........................................................................18
8.1 Loop Break Alarm on Amperometric Transformer TA.............................. 20
8.2 Digital input Functions.............................................................................. 21
8.3 Dual Action Heating-Cooling .................................................................... 22
9 Serial Communication ........................................................................24
10 Configuration......................................................................................29
10.1 Modify Configuration Parameter............................................................... 29
11 Table of Configuration Parameters.....................................................30
12 Alarm Intervention Modes...................................................................41
13 Table of Anomaly Signals...................................................................45
14 Summary of Configuration parameters...............................................46

3
Sommario
15 Introduzione........................................................................................49
16 Identificazione del modello .................................................................49
17 Dati tecnici..........................................................................................49
17.1 Caratteristiche generali............................................................................. 49
17.2 Caratteristiche hardware .......................................................................... 50
17.3 Caratteristiche software............................................................................ 50
18 Dimensioni e installazione..................................................................51
19 Collegamenti elettrici..........................................................................52
19.1 Schema di collegamento.......................................................................... 52
20 Funzione dei visualizzatori e tasti.......................................................56
20.1 Indicatori numerici (display)...................................................................... 56
20.2 Significato delle spie di stato (led)............................................................57
20.3 Tasti.......................................................................................................... 57
21 Funzioni del regolatore.......................................................................58
21.1 Modifica valore setpoint principale e setpoint di allarme..........................58
21.2 Auto-tune.................................................................................................. 58
21.3 Lancio dell’AutoTuning “Manuale”............................................................ 58
21.4 Tuning “Automatico”................................................................................. 59
21.5 Soft Start................................................................................................... 59
21.6 Regolazione automatico / manuale per controllo % uscita ......................60
21.7 Ciclo pre-programmato............................................................................. 61
21.8 Memory Card............................................................................................ 62
21.9 Caricamento valori di default....................................................................63
22 Funzioni LATCH ON...........................................................................63
22.1 Loop Break Alarm su TA (Trasformatore Amperometrico)....................... 65
22.2 Funzioni da Ingresso digitale.................................................................... 66
22.3 Funzionamento in doppia azione (caldo-freddo)......................................67
23 Comunicazione Seriale.......................................................................69
24 Configurazione...................................................................................74
24.1 Modifica parametro di configurazione ......................................................74
25 Tabella parametri di configurazione....................................................75
26 Modi d’intervento allarme....................................................................86
27 Tabella segnalazioni anomalie............................................................90
28 Promemoria configurazione................................................................91

4
1 Introduction
Thank you for choosing a Pixsys controller.
Controller DRR245 is specifically conceived for application on control
panels with DIN rail mounting.
Pixsys makes available in a single device all the options relevant to
sensor input and actuators command, in addition to the extended
power range 24…230 Vac/Vdc. With 18 sensors to select and outputs
configurable as relay, SSR command, 4…20 mA and 0…10Volt, the
user or retailer can reduce warehouse stock by rationalising
investment and device availability. The series is completed with
models equipped with serial communication RS485 Modbus RTU and
with a loading control function via the amperometric transformer. The
configuration is further simplified by the Memory cards which are
equipped with internal battery and therefore don’t require cabling to
power the controller.
2 Model identification
DRR245-21-ABC-T
2 Relays 5A + 1 Ssr/V/mA + Rs485 +TA*
* Input TA for Loop Break Alarm, supply 24…230 Vac/Vdc +/- 15%
50/60Hz – 5,5VA.
3 Technical data
3.1 General features
Displays 4 0,40 inch displays+
4 0,30 inch displays
Operating
temperature 0-45°C, humidity 35..95uR%
Sealing IP65 front panel, IP20 casing and terminals
Material PC ABS UL94VO self-exstinguishing
Weight 165 g

5
3.2 Hardware features
Analog
input
1: AN1
Configurable via software
Input
Thermocouple type K, S, R, J
Automatic compensation of cold
junction from from 0°C to 50°C.
Thermoresistance: PT100,
PT500, PT1000, Ni100, PTC1K,
NTC10K (β3435K)
Linear: 0-10V, 0-20 or
4-20mA, 0-40mV, amperometric
transformer TA 50mA 1024 points
Potentiometers: 6K, 150K,
Tolerance (25°C)
+/-0.2 % ± 1 digit
for thermocouple
input, thermo
resistance and
V/mA.
Cold junction
accuracy 0.1°C/°C
Relay
outputs 2relays
Configurable for command or
alarm.
Contacts 5A-250V~
SSR output
1linear 0/4…20mA
/SSR/0…10Volt
Configurable as command or
retransmission of setpoint/process
Configurable:
> SSR
> 4-20mA,
> 0…10Volt,
> 0-20mA.
Resolution
4000 points
3.3 Software features
Regulation algorithms
ON-OFF with hysteresis
P, PI, PID, PD with proportional time
Proportional band
0...9999°C or °F
Integral time
0,0...999,9 sec (0 excluded)
Derivative time
0,0...999,9 sec (0 excluded)
Controller functions
Manual or automatic Tuning, configurable
alarms, protection of command and alarm
setpoints, activation of functions via digital
input, preset cycle with Start/Stop.

6
4 Dimensions and installation
CN11 6
MEMORYC.241
CN11 6
PIXSYS

7
5 Electrical wirings
Although this controller was designed to resist noises in
industrial environments, pease notice following safety
guidelines:
• Separate the feeder line from the power lines.
• Avoid placing near units with remote control switches,
electromagnetic contactors, high powered motors and in all instances
use specific filters.
• Avoid placing near power units, particularly if phase controlled.
5.1 Wiring diagram
Power supply
24
23
SUPPLY
24…230V
AC/DC
Switching power supply with extended range
24…230 Vac/dc ±15% 50/60Hz – 5,5VA

8
Analog input AN1
-
+
Tc
14
13
Shield/Schermo
Thermocouples K, S, R, J.
•Comply with polarity
•For possible extensions, use a compensated
wire and terminals suitable for the
thermocouples used (compensated)
•When shielded cable is used, it should be
grounded at one side only
15
14
13
PT/NI100
Shield/Schermo
A
B
C
Thermoresistances PT100, NI100
•For the three-wire connection use wires with
the same section
•For the two-wire connection short-circuit
terminals 13 and 15.
•When shielded cable is used, it should be
grounded at one side only
13
14
15
PTC/NTC
15
14
Shield/Schermo
Thermoresistances NTC, PTC, PT500, PT1000
and potentiometers
•When shielded cable is used, it should be
grounded at one side only
+VDC
16
14
13
V/I
+
-
Shield/Schermo
Linear signals V/mA
•Comply with polarità
•When shielded cable is used, it should be
grounded at one side only
Examples of Connection for linear input
+ 12 V 16
14
13V/A
0...10V
Max 30mA
Linear signals 0….10V
Comply with polarity

9
A
C
16
14
13
4...20mA
SENSORE DI PRESSIONE
B
+ 12 V
V/A
PRESSURE TRANSMITTER
Linear signals 0/4….20mA
With three-wire sensor
Comply with polarity
A=Sensor output
B=Sensor ground
C=Sensor supply
A
14
13
4...20mA
SENSORE DIPRESSIONE
B
V/A
ALIMENTAZIONE
ESTERNA
PRESSURE TRANSMITTER
EXTERNAL
SUPPLY
Linear signals 0/4….20mA
with external power of sensor
Comply with polarity
A=Sensor output
B=Sensor ground
A
C
4...20mA
SENSORE DI PRESSIONE
16
14
13
+ 12 V
V/A
PRESSURE TRANSMITTER
Linear signals 0/4….20mA
with two-wire sensor
Comply with polarity
A=Sensor output
C=Sensor supply
Serial input
RS485
20
21
14
-
+
Shield/Schermo
RS485 Modbus RTU communication
•For networks with more than five
instruments supply in low voltage
Relay output Q1
1
2Q 1
3
Capacity 5A/250V~ for resistive loads
Relay output Q2
4
5Q 2
6
Capacity 5A/250V~ for resistive loads

10
SSR output
12
SSR/V/mA
11
10
SELECTION
9
SSR command 12V/30mA
Short-circuit pins 9 and 10 as in the
figure to use SSR output
mA or Volt output
12
mA 11
Pins 11-12: linear output in mA configurable
using parameters as command (Parameter
) or retransmission of process or
setpoint ( Parameter ).
Pins 7-8: optional external power supply for
current loop (max 24Vdc).
12
V
11
10
SELECTION
9
Linear output in Volt configurable using
parameters as command (Parameter )
or retransmission of process or setpoint
( Parameter ).
Short-circuit pins 9 and 10 as in the
figure to use linear output in Volt
Amperometric Transformer Input
19
18
TA
•Input 50mA for amperometric transformer
•Sampling time 80ms
•Configurable by parameters

11
Digital input (1)
15
14
I D
GND
Combined use of digital input and TA input
Digital input according to parameter
This combined use is possible only with
sensors TC, 0…10V, 0/4…20mA, 0…40mV.
Digital input (2)
17
16
I D
+ 12 V
Use of digital input without TA input
Digital input according to parameter .
6 Displays and keys functions
A2
A1
C2
C1
1
3
4
8 9 10 5
6
7
2
6.1 Numeric Indicators (Displays)
1
Normally displays the process. During the
configuration phase, it displays the parameter
being inserted
2
Normally displays the setpoint. During the
configuration phase, it displays the parameter
value being inserted.

12
6.2 Meaning of Status Lights (Led)
3
C 1
C 2
ON when the output command is on. C
1 with
relay/SSR/mA/Volt command or C1 (open) and C2
(close) for a motorised valve
4
A 1
A 2
A 3
ON when the corresponding alarm is on.
5
MAN
ON when the “Manual” function is on.
6
TUN
ON when the controller is running an “Autotuning” cycle.
7
REM
ON when the controller communicates via serial port.
6.3 Keys
8
•Allows to increase the main setpoint.
•During the configuration phase, allows you to slide
through parameters. Together with the key it
modifies them.
•Pressed after the key it allows to increase the
alarm setpoint.
9
•Allows to decrease the main setpoint.
•During the configuration phase, allows to slide
through parameters. Together with the key it
modifies them.
•Pressed after the key it allows to decrease the
alarm setpoint.
10
•Allows to display the alarm setpoint and runs the
autotuning function.
•Allows to vary the configuration parameters

13
7 Controller Functions
7.1 Modifying Main Setpoint and Alarm Setpoint Values
The setpoint value can be changed from keyboard as follows:
Press Effect Operation
1
or
Value on display 2
changes Increases or decreases the main setpoint
2
Visualize alarm
setpoint on display 1
3
or
Value on display 2
changes Increases or decreases the alarm setpoint value
7.2 Auto-tune
The Tuning procedure calculates the controller parameters and can be
manual or automatic according to selection on parameter 57
).
7.3 Manual Tuning
The manual procedure allows the user greater flexibility to decide
when to update PID algorithm work parameters. The procedure can be
activated in two ways.
•By running Tuning from keyboard:
Press the key until display 1 shows the writing with
display 2 showing , press , display 2 shows .
The
TUN
led switches on and the procedure begins.
•By running Tuning from digital input:
Select on parameter 61 .
On first activation of digital input (commutation on front panel) the
TUN
led switches on and on second activation switches off.

14
7.4 Automatic Tuning
Automatic tuning activates when the controller is switched on or when
the setpoint is modified to a value over 35%.
To avoid an overshoot, the treshold where the controller calculates the
new PID parameters is determined by the setpoint value minus the
“Set Deviation Tune” ( see Parameter 58 ).
To exit Tuning and leave the PID values unchanged, just press the
key until display 1 shows the writing with the display
showing , press , display 2 shows .
The
TUN
led switches off and the procedure finishes.
7.5 Soft Start
To reach the setpoint the controller can follow a gradient expressed in
units (e.g. degree/ hours).
Set the increase value in parameter 62 with the desired
units/hours; only on subsequent activation the controller uses the
soft start function.
If parameter 59 is set on and parameter 63
is different from 0, after switch-on and elapsing of the time set on
parameter 63, setpoint does not follow the gradient anymore, but it
reaches final setpoint.with maximum power.
Autotuning does not work when Soft Start is activated: otherwise if
parameter 63 is different from 0 and parameter 57 is
set on , Autotuning starts when soft-start time is finished. If
parameter 57 is set on , the Autotuning can be
started only when soft start finishes.

15
7.6 Automatic/Manual Regulation for % Output Control
This function allows to select automatic functioning or manual
command of the output percentage.
With parameter 60 , you can select two methods.
1. The first selection allows you to enable the key with
the writing on display 1, while display two shows .
Press the key to show ; it is now
possible, during the process display, to change the output
percentage using the keys and . To return to automatic
mode, using the same procedure, select on display 2: the
MAN
led switches off and functioning returns to automatic mode.
2. The second selection enables the same functioning, but
with two important variants:
•If there is a temporary lack of voltage or after switch-off, the
manual functioning will be maintained as well as the previously
set output percentage value.
•If the sensor breaks during automatic functioning, the controller
moves to manual mode while maintaining the output percentage
command unchanged as generated by the PID immediately
before breakage.

16
7.7 Pre-programmed cycle
The pre-programmed cycle function activates by setting or
in parameter 59 .
First option : the controller reaches setpoint1 basing on the
gradient set in parameter 62 , then it reaches maximum power
up to setpoint2. When the process reaches maximum power, this
setpoint is maintained for the time set in parameter 63 . On
expiry, the command output is disabled and the controller displays
.
The cycle starts at each activation of the controller, or via digital input if
it is enabled for this type of functioning (see parameter 61 ).
Second option : start-up is decided only on activation of the
digital input, according to the setting of parameter 61 . On
start-up, the controller reaches setpoint 1 basing on the gradient set in
parameter 62 . When the process reaches this gradient, it is
maintained for the time set in parameter 63 . On expiry, the
command output is disabled and the controller displays .
Time
Setpoint
Natural
cooling
Hold
Setpoint 1
Gradient

17
7.8 Memory Card
Parameters and setpoint values can be duplicated from one controller
to another using the Memory card.
There are two methods:
•With the controller connected to the power supply
Insert the memory card when the controller is off.
On activation display 1 shows and display 2 shows
(Only if the correct values are saved in the memory card). By
pressing the key display 2 shows , then confirm using the
key. The controller loads the new data and starts again.
RED LIGHT: waiting for programming
GREEN LIGHT: done
LED ROSSO: acceso in programmazione
LED VERDE: programmazione eseguita
•With the controller not connected to power supply.
The memory card is equipped with an internal battery with an
autonomy of about 1000 uses.
Insert the memory card and press the programming buttons.
When writing the parameters, the led turns red and on completing the
procedure it changes to green. It is possible to repeat the procedure
without any particular attention

18
Updating Memory Card
To update the memory card values, follow the procedure described in
the first method, setting display 2 to so as not to load the
parameters on controller
2
.
Enter configuration and change at least one parameter.
Exit configuration. Changes are saved automatically.
7.9 Loading default values
This procedure makes it possible to restore factory settings of the
instrument.
Premere Effetto Eseguire
1
for 3
seconds.
Display 1 shows with
the 1st digit flashing, while
display 2 shows
2
or
Change the flashing digit and
move to the next one using
the key.
Enter password
3
to confirm
Instrument loads default
settings and resets
8 LATCH ON Function
For use with input (potentiometer 6K) and
(potentiometer 150K ) and with linear input (0…10V, 0...40mV,
0/4…20mA), you can associate start value of the scale (parameter 6
) to the minimum position of the sensor and value of the scale
end (parameter 7 ) to the maximum position of the sensor
(parameter 8 configured as ).
2
If on activation the controller does not display it means no data have been
saved on the memory card, but it is possible to update values.

19
It is also possible to fix the point in which the controller will display 0
(however keeping the scale range between and )
using the “virtual zero” option by setting or in
parameter 8 . If you set the virtual zero will reset after
each activation of the tool; if you set the virtual zero remains
fixed once tuned.
To use the LATCH ON function configure as you wish the parameter
.
3
For the calibration procedure refer to the following table:
Press Effect Operation
1
Exit parameters configuration.
Display 2 shows the writing
.
Position the sensor on the
minimum functioning value
(associated with )
2
Set the value to minimum.
The display shows Position the sensor on the
maximum functioning
position (associated with
)
3
Set the value to maximum.
The display shows To exit the standard
procedure press .
For “virtual zero” settings
position the sensor on the
zero point.
4
Set the virtual zero value.
The display shows
N.B.: for selection of
the procedure in
point 4 should be followed on
each re-activation.
To exit the procedure press
MAX
MIN
ZERO
3
The tuning procedure starts by exiting the configuration after changing the parameter.

20
8.1 Loop Break Alarm on Amperometric Transformer TA
This function allows to measure load current and to manage an alarm
during malfunctioning with power in short circuit or always off. The
amperometric transformer connected to terminals 15 and 16 must be
50mA (sampling time 80ms).
•Set scale end value of the amperometric transformer in Amperes
on parameter 47
•Set the intervention threshold of the Loop break alarm in Amperes
on parameter 48
•Set the intervention delay time of the Loop break alarm on
parameter 49
•You can associate the alarm with a relay by setting the parameter
, or as .
If a remote control switch or SSR remains closed, the controller signals
the fault by showing on display 2 (alternatively with a
command setpoint).
If instead the power stage remains open, or the load current is lower
than the value set on , the controller shows on
display.
You can display the current absorbed during the closure phase of the
power stage.
Press Effect Operation
1
This key enables to
scroll on display 2 the
output percentage,
auto/man selection,
setpoint and alarms
Press until the writing
appears on display 1 and display 2
shows the current in amperes
( >0).
The value is also maintained when
no current circulates on the load.
Setting on parameter 48 the value 0 is possible visualize the
current absorbed without generating the Loop Break Alarm.