Pixsys DRR 245 Guide

Start guide
DRR245
Controller

Table of contents
1 Introduction......................................................................................................................................6
2 Safety guide lines.............................................................................................................................6
3 Model identification .......................................................................................................................7
4 Technical Data..................................................................................................................................7
4.1 General data.........................................................................................................................7
4.2 Hardware data.....................................................................................................................7
4.3 Software data ......................................................................................................................8
5 Dimensions and Installation........................................................................................................9
6 Electrical wirings............................................................................................................................10
6.1 Wiring diagram..................................................................................................................10
6.1.a Power supply........................................................................................................11
6.1.b AN1 analogue imput..........................................................................................11
6.1.c Example of connection for linear input Volt and mA ...............................12
6.1.d Serial input ...........................................................................................................13
6.1.e Relay Q1 - Q2 output ..........................................................................................13
6.1.f SSR output ............................................................................................................13
6.1.g mA / Volt output..................................................................................................14
6.1.h Current transformer input................................................................................14
6.1.i Digital Input 1......................................................................................................14
6.1.j Digital Input 2......................................................................................................14
7 Display and Key Functions ..........................................................................................................15
7.1 Numeric Indicators (Display) .........................................................................................15
7.2 Meaning of Status Lights (Led)......................................................................................15
7.3 Key s .......................................................................................................................................16
8 Controller Functions.....................................................................................................................16
8.1 Modifying Main Setpoint and Alarm Setpoint Values............................................16
8.2 Auto-Tuning........................................................................................................................16
8.3 Manual Tuning...................................................................................................................17
8.4 Automatic Tuning .............................................................................................................17
8.5 Soft-Start .............................................................................................................................17
8.6 Automatic / Manual Regulation for % Output Control ..........................................18
8.7 Pre-Programmed Cycle....................................................................................................18
8.8 Memory Card (optional)................................................................................................. 20
9 Latch on functions.........................................................................................................................21
9.1 Loop Break Alarm On Current Trasformer................................................................. 22
9.2 Digital Imput Functions.................................................................................................. 23
9.3 Dual Action Heating-Cooling........................................................................................24

10 Serial Communication................................................................................................................ 26
11 Enter Configuration parameters.............................................................................................. 32
11.1 Loading default values................................................................................................... 32
12 Table of configuration parameters.......................................................................................... 33
13 Alarm Intervention Modes ......................................................................................................... 48
13.a Absolute Alarm or Threshold Alarm (
a . AL.
selection) ........................................ 48
13.b Absolute Alarm or Threshold Alarm Referring to Setpoint Command (
a . c. AL.
selection) ............................................................................................................................ 49
13.c Band Alarm (
b . AL.
selection)...................................................................................... 50
13.d Upper Deviation Alarm (
H. d . AL.
selection)................................................................51
13.e Lower Deviation Alarm (
L. d .AL.
selection) ............................................................... 52
14 Table of Anomaly Signals........................................................................................................... 53
15 Configuration EASY-UP............................................................................................................... 54

6 - DRR245 - User manual
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 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.

User manual - DRR245 7
3 Model identification
Power supply 24..230 Vac/Vdc +/- 15% 50/60Hz – 5,5VA
DRR245-21ABC-T 2 Relays 5A + 1 Ssr/V/mA + Rs485 +T.A.*
* Model with current transformer input for “Loop Break Alarm” function.
4 Technical Data
4.1 General data
Displays 4x0.40 inch displays
4x0.30 inch displays
Operating
temperature
Temperature 0-45 °C
Humidity 35..95 uR%
Sealing IP65 front panel
IP20 box and terminals
Material PC ABS UL94VO self-exstinguishing
Weight 165 g
4.2 Hardware data
Analogue
imput
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 (β 3435K)
Linear: 0-10V, 0-20 or 4-20mA,
0-40mV, amperometric
transformer T.A. 50mA 1024
points
Potentiometers: 6 KΩ, 150 KΩ.
Tolerance (25 °C) +/-0.2% ±1 digit
(F.s.) for thermocouple input,
thermo resistance and V / mA.
Cold junction accuracy 0,1°C/°C.
Impedance:
0-10 V: Ri>110 KΩ
0-20 mA: Ri<5Ω
4-20 mA: Ri<5Ω
0-40 mV: Ri>1MΩ
Relay
output
2relays Configurable for
command or alarm.
Contacts 5A/250V~Resistite
loads

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SSR/V/mA
output
1linear 0/4..20mA /SSR/0..10Volt
Configurable as command or
retransmission of setpoint/
process
SSR 12V 30mA
Configurable:
0-10 V with 9500 points +/-0.2%
(F.s.)
0-20 mA with 7500 points
+/-0.2% (F.s.)
4-20 mA with 6000 points
+/-0.2% (F.s.)
4.3 Software data
Regulation
algorithms
ON - OFF with hysteresis.
P, P.I., P.I.D., P.D. with proportional time.
Proportional
band 0..9999 °C or °F
Integral time 0,0..999,9 sec. (0 excludes integral function)
Derivative time 0,0..999,9 sec. (0 excludes derivative function)
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.

User manual - DRR245 9
5 Dimensions and Installation
Extractable terminal blocks
Morsettiere Estraibili
72 mm
90 mm
64 mm
Memory Card (Optional)
Cod. Memory 2100.30.002
Memory Card (Optional)
with battery / con batteria
Cod. Memory 2100.30.003
Din rail mounting guide EN50022
Attacco a guida DIN EN50022

10 - DRR245 - User manual
6 Electrical wirings
Although this controller has been designed to resist 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.
6.1 Wiring diagram

User manual - DRR245 11
6.1.a Power supply
SUPPLY
24..230
Vac/dc
23
24
Switching supply with extended range
24..230 Vac/dc ±15% 50/60Hz – 5,5VA
(galvanic isolated)
6.1.b AN1 analogue imput
13
14
AI1 TC
Shield/Schermo
For 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.
13
14
15
AI1
PT/NI100
Shield/Schermo
Rosso
Red
Bianco
White
Rosso
Red
For thermoresistances PT100, NI100.
• For the three-wire connection use wires with the
same section.
• For the two-wire connection short-circuit terminals 1
and 3.
• When shielded cable is used, it should be grounded
at one side only.
• Select internal jumper JP3 as in the figure.
15
14
13
RED/ROSSO
RED/ROSSO
WHITE/BIANCO
14
15
AI1
Shield/Schermo
PTC/NTC
For thermoresistances NTC, PTC, PT500, PT1000 e
potentiometers.
When shielded cable is used, it should be grounded at
one side only to avoid ground loop currents.

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13
14
16
AI1 V
mA
+12V
30 mA
Shield/Schermo
For linear signals V / mA.
• Comply with polarity.
• When shielded cable is used, it should be grounded
at one side only.
6.1.c Example of connection for linear input Volt and mA
14
13
0...10V
For signals 0..10 V.
Comply with polarity.
PRESSURETRANSMITTER/
SENSOREDIPRESSIONE
P :0...100mbar Pmax :3bar T :0..70°C
OUT : 4...20mA
IN :9...33V DC
16
14
13
B
C
A
4...20mA
For signals 0/4..20 mA with three-wire sensor.
Comply with polarity:
A= Sensor output
B= Sensor ground
C= Sensor power supply (12Vdc / 30mA)
Externalsupply/
Alimentazioneesterna
P :0...100mbar Pmax :3bar T :0..70°C
OUT : 4...20mA IN :9...33V DC
PRESSURETRANSMITTER/
SENSOREDIPRESSIONE
14
13
C
B
4...20mA
For signals 0/4..20 mA with external power of sensor.
Comply with polarity:
A= Sensor output
B= Sensor ground
P :0...100mbar Pmax :3bar T :0..70°C
OUT : 4...20mA IN :9...33V DC
13
16
C
A
PRESSURETRANSMITTER/
SENSOREDIPRESSIONE
4...20mA
For signals 0/4..20 mA with two-wire sensor.
Comply with polarity:
A= Sensor output
C= Sensor power supply (12Vdc / 30mA)

User manual - DRR245 13
6.1.d Serial input
21
19
20
RS485
Shield/Schermo
RS485 Modbus RTU communication.
• For networks with more than five instruments supply
in low voltage, preferably Vdc.
• Shield must not be grounded (connect to pin 19)
6.1.e Relay Q1 - Q2 output
Q1
5A
230V
1
2
36
4
5
Q2
5A
230V
Capacity:
• 5 A / 250 V~ for resistive loads, 105operations.
• 20/2 A, 250 Vac, cosφ = 0.3, 105operations.
50
20
10
5
012 3 4
Contact load current (A) 5
Service life (x104operations)
100 AC125 V AC125V COS ø=0.4
DC30 V t=7ms
Life Curve
AC250V COS ø=0.4
DC30 V t=15ms
200
AC250V
DC30 V
6.1.f SSR output
11
10
9
12
+10,5V
SSR
SSR command 10,5V/30mA.
Short-circuit pins 9 and 10 as in the figure to use SSR
output

14 - DRR245 - User manual
6.1.g mA / Volt output
12
11
8
7
0/4..20mA
OPS
Externalsupply/
Alimentazioneesterna
Pins 11-12: linear output in mA configurable using
parameters as command (Parameter c.out
) or
retransmission of process or setpoint (Parameter
re t r.).
Pins 7-8: optional external power supply for current
loop (max 24Vdc).
12
11
10
9
0..10V
Linear output in Volt configurable using parameters
as command (Parameter c.out
) or retransmission of
process or setpoint (Parameter re t r.).
Short-circuit pins 9 and 10 as in the figure to use
linear output in Volt.
6.1.h Current transformer input
18
19
TA
• Input 50mA for amperometric transformer
• Sampling time 80ms
• Configurable by parameters
6.1.i Digital Input 1
17
16
+12V
DI
(PnP)
Use of digital input without T.A. input
Digital input according to parameter d G t.i .
Short-circuit pins 16 and 17 as in the figure to
activate the digital input.
6.1.j Digital Input 2
15
DI
(NpN)
14
0V
Combined use of digital input and T.A. input
Digital input according to parameter d G t.i .
This combined use is possible only with sensors TC,
0..10V, 0/4..20mA, 0..40mV.

User manual - DRR245 15
7 Display and Key Functions
7.1 Numeric Indicators (Display)
1
1234
Normally displays the process. During the configuration
phase, it displays the parameter being inserted.
2
1234
Normally displays the setpoint. During the configuration
phase, it displays the parameter value being inserted.
7. 2 Meaning of Status Lights (Led)
3C1 C2
ON when the output command is on.
C1 with relay/SSR/mA/Volt command or C1 (open) and C2
(close) for a motorised valve command.
4A1 A2 A3 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 “Autotune” cycle.
7 REM ON when the controller communicates via serial port.

16 - DRR245 - User manual
7. 3 Keys
8
c
• Allows to increase 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 increase the alarm setpoint.
9
d
• 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.
8 Controller Functions
8.1 Modifying Main Setpoint and Alarm Setpoint
Values
The setpoint value can be changed by keyboard as follows:
Press Display Do
1
c
or
d
Value on display 2 changes. Increases or decreases
the main setpoint.
2|
Visualize alarm setpoint
on display 1 value being
inserted.
3
c
or
d
Value on display 2 changes. Increases or decreases
the alarm setpoint value.
8.2 Auto-Tuning
Tuning procedure calculates the controller parameters and can be manual or
automatic according to selection on parameter 57 (tunE).

User manual - DRR245 17
8.3 Manual Tuning
Manual procedure allows the user greater flexibility to decide when to update
P.I.D. algorithm work parameters. The procedure can be activated in two ways:
• Running Tuning by keyboard:
Press |key until display 1 shows the writing tunE with display 2 showing
off
, press c , display 2 shows on.
TUN led switches on and the procedure begins.
• Running Tuning by digital input:
Select
tune on parameter 61 d Gt.i . At first activation of digital input
(commutation on front panel) TUN led switches on and at second activation
switches off.
8.4 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 new P.I.D.
parameters is determined by the setpoint value minus the “Set Deviation Tune”
(see parameter 58 S.D. t u .).
To exit Tuning and keep P.I.D. values unchanged, press |key until display 1
shows the writing tune and display 2 shows on. Press
d , display 2 shows off .
TUN led switches off and procedure finishes.
8.5 Soft-Start
To reach the setpoint the controller can follow a gradient expressed in units
(example: Degree/Hours).
Enter the gradient on parameter 62 G rAd . with chosen Units/Hours; only on
subsequent activation the controller uses Soft-Start function.
If parameter 59 op.mo.
is set on co n t. and parameter 63 m a . ti . 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, manual or automatic, works ONLY when the Soft-Start time is
expired and if parameter 59 op.mo.
is set on co n t. and parameter 63 m a . ti . is
different from 0.

18 - DRR245 - User manual
8.6 Automatic / Manual Regulation for % Output
Control
This function allows to select automatic functioning or manual command of the
output percentage.
With parameter 60 Au.ma., can select two methods.
1 First selection (en.)
Pressing |key display 1 shows p.---
, while display 2 shows Auto.
Pressing
c key display shows Man.; it is now possible to change the output
percentage using
c and d . To return to automatic mode, using the same
procedure, select Auto on display 2: led MAN switches off and functioning
returns to automatic mode.
2 Second selection (EN.ST,)
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 moves
to manual mode while maintaining the output percentage command
unchanged as generated by the P.I.D. immediately before breakage.
8.7 Pre-Programmed Cycle
The pre-programmed cycle function activates by setting P r. cy or Pc.SS. on
parameter 59 oP.Mo.
First selection (Pr. cy ):
the controller reaches setpoint1 basing on the gradient set on parameter 62
Grad., then it reaches maximum power up to setpoint 2. When the process
reaches maximum power, this setpoint is maintained for the time set on
parameter 63 m a . ti .
On expiry, the command output is disabled and controller displays stop .
Cycle starts at each activation of the controller, or via digital input if it is
enabled for this type of functioning (see parameter 61 d Gt .i .).

User manual - DRR245 19
Second selection (P r. cy):
start-up is decided only on activation of the digital input, according to the
setting of parameter 61 d Gt .i . On start-up, controller reaches setpoint 1
following gradient set in parameter 62 Gra d .
When the process reaches this gradient, it is maintained for the time set
on parameter 63 m a . ti . On expiry, command output is disabled and the
controller displays stop
.
First selection
Primo caso
Second selection
Secondo caso
Setpoint
Setpoint
Setpoint 1
Setpoint 2
Max. Power
Potenza
massima Setpoint 1
Hold
Mantenimento
Natural cooling
Rareddamento
naturale
TempoTime
Gradient
Gradiente
Gradient
Gradiente
Hold
Mantenimento
Natural cooling
Rareddamento
naturale
Variation (S.S. cY.):
Selecting S.S. cY. (Soft Start Cycle) the controller will operate as per the first
selection (Pr. cy ) but with two important variations. If at starting the process
is lower than SET1, the device regulates the output power according to the
percentage selected on parameter 62 G rAd.
When the process is greater than SET1 or the time selected on parameter 63
M A . ti . is elapsed, it reaches maximum power up to SET2. When the process
reaches SET2 the controller keeps it to infinity.
If on parameter 59 oP.Mo. is set S.S. cY. it is possible to select Hi d E on
parameter 17 c. S . P. : SET1 is no longer displayed and SET2 label becomes SET.
Starting the manual tune during the regulation on SET1, TUN led switches ON
only when the regulation pass to SET2.
The autotuning (manual or automatic) works only if SET2 is being regulated.
If the autotuning is launched during regulation on SET1 it doesn’t start until
the regulation pass to SET2.

20 - DRR245 - User manual
8.8 Memory Card (optional)
Parameters and setpoint values can be duplicated from one controller to
another using the Memory card.
2 modes are available:
• With the controller connected to the power supply.
Insert memory card when the controller is off.
On activation display 1 shows mem o and display 2 shows --- (only if the correct
values are saved in the memory card). By pressing
c key display 2 shows Lo a d,
then confirm using |key. Controller loads the new value and restarts.
RED LIGHT: waiting for programming
GREEN LIGHT: done
LED ROSSO: accceso 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 (2032 button battery, replaceable).
Insert the memory card and press the programming buttons.
When writing the parameters, led turns red and on completing the procedure it
changes to green. It is possible to repeat the procedure without any particular
attention.
Updating Memory Card
To update the memory card values, follow the procedure described on first
mode, setting display 2 to ---- so as not to load the parameters on controller1.
Enter configuration and change at least one parameter.
Exit configuration. Changes are stored automatically.
1 If on activation the controller does not display memoit means no data have been saved on the
memory card, but it is possible to update values.