QUANTA DQ61 User manual

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Rev 01.14_en
28/12/2012
Temperature Monitoring Unit for Transformers and
Other Electrical Machines
DQ61
User Manual
(Hardware Rel. 2.0 - Firmware Rel. 1.3.3)

Pag. 2
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
P. I.V.A. e Cod. Fisc.: IT 04273220485 REA CCIAA Firenze: n. 0433306 • Registro Imprese n. FI017 -58513
Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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1General Information_______________________________________________________________ 3
2How to use this manual____________________________________________________________ 3
3Identification Data ________________________________________________________________ 4
4The DQ61 ______________________________________________________________________ 4
4.1 Terms and conditions of intended use ____________________________________________ 4
4.2 Conditions of use not permitted _________________________________________________ 5
4.3 Technical specifications _______________________________________________________ 6
5Funzionamento e uso _____________________________________________________________ 7
5.1 Control Panel _______________________________________________________________ 7
5.2 Rear Panel _________________________________________________________________ 8
5.3 Power Supply _______________________________________________________________ 8
5.4 Electrical Connections ________________________________________________________ 8
5.5 Pt100 probes electrical connections______________________________________________ 9
5.6 Other electrical connections ____________________________________________________ 9
5.7 Relays Functionality __________________________________________________________ 9
5.8 Buzzer features_____________________________________________________________ 10
6Programming___________________________________________________________________ 11
6.1 Normal view _______________________________________________________________ 11
6.2 Access to menu ____________________________________________________________ 11
6.2.1 MAX TEMPERATURE RECORD Menu________________________________________ 11
6.2.2 ALARM SETTING Menu____________________________________________________ 12
6.2.3 ALARM COUNTERS Menu _________________________________________________ 12
6.2.4 DISPLAY MODE Menu_____________________________________________________ 13
6.2.5 USER Menu _____________________________________________________________ 14
6.2.6 SERVICE Menu __________________________________________________________ 15
6.2.7 INSTRUMENT INFO_______________________________________________________ 17
6.2.8 OUTPUT TEST___________________________________________________________ 17
7Remote Control _________________________________________________________________ 18
7.1.1 Communication: Physical Layer ______________________________________________ 18
7.1.2 Communication: Data Layer _________________________________________________ 18
7.1.3 Communication: Application Layer____________________________________________ 18
7.1.4 Controllable Variables Table_________________________________________________ 18
7.1.5 Data types_______________________________________________________________ 18
7.2 Monitorable and Editable Registers Table ________________________________________ 20
7.2.1 Monitorable and Editable Parameters and Variables______________________________ 20
7.3 Read-Only Registers Table ___________________________________________________ 21
7.3.1 Read-Only Variables_______________________________________________________ 21
8Overall Dimensions ______________________________________________________________ 22
9Troubleshooting_________________________________________________________________ 22
10 User Manual Revision History______________________________________________________ 22

Pag. 3
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
P. I.V.A. e Cod. Fisc.: IT 04273220485 REA CCIAA Firenze: n. 0433306 • Registro Imprese n. FI017 -58513
Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
http: www.quanta.it e-mail: [e-mail]
http: www.quantasrl.eu [e-mail]
ufficiotecnic[email protected]
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1 General Information
Before performing any work on the device, ensure you have read and fully understood
this manual.
To ensure safe operation of the product it is necessary that the transport, storage,
installation, use, maintenance and disposal practices are in compliance with the instructions
in this manual.
Each operation on the connections and installation must be performed by qualified and
authorized personnel only. The QUANTA S.r.l. cannot be held responsible for any damage to
people and/or things if have not been complied with all the instructions in this manual.
The product shall be used only for the purpose specified in this manual. Any other use,
besides being forbidden, it could pose a risk to health and/or safety of persons and/or
property and damage to the equipment.
Use only QUANTA S.r.l. original spare parts The use of non-original spare parts will
invalidate your warranty, and might pose a risk to health and / or safety of persons and / or
property.
All rights are reserved. Any form of duplication or distribution of this manual is allowed only
under the express written consent of QUANTA S.r.l.
2 How to use this manual
This manual should be considered part of the unit, consequently it shall always be available for
consultation by the management and maintenance staff. Keep it with care; in case of loss or
damage you may request a copy asking your dealer or directly QUANTA S.r.l. quoting the
model and serial number of the device,

Pag. 4
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
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Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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3 Identification Data
The identification label is located on the back of the unit.
Figure 1
For technical assistance contact QUANTA S.r.l. using references in the footer of this manual.
4 The DQ61
4.1 Terms and conditions of intended use
The DQ61 is an electronic control unit, designed to be used to monitor and control the temperature of electrical
machines, e.g. medium/high voltage transformers or electrical motors.
Since it is not possible to know in advance what are the real application conditions in which the device will be
utilized, and given the great variability of the fields of application, it is responsibility of the user to determine the
suitability of DQ61 in perform properly the specific application.
QUANTA S.r.l. is available to provide the know-how to help customers in the evaluation of the specific
suitability of the DQ61.
The DQ61 is a device classified under Measure Category III according to EN61010-1,
permanently connected.
The device must be installed inside an electrical panel and shall be placed in proximity
of a switch in order to allow for a swift disconnection from the power supply.
The connection cables, including power cables must be secured and protected against
the danger of direct contact to the operators.
Working on the device shall only be done after power to the panel has been
disconnected.

Pag. 5
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
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Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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The device must be used only for the use and in the environmental conditions expressly
provided in this manual: Any other use is considered improper and is not permitted. The
use in ways and for purposes other than prescribed in this manual raises QUANTA S.r.l.
from any liability for damage to persons, animals or property.
The device must be used for its intended use, only if in perfect conditions of maintenance. The use is permitted
by qualified and trained personnel only, in strict accordance to current safety regulations and standards for the
prevention of accidents.
In particular, the user should:
verify the compliance of the environment in which the equipment is installed and the related
arrangements for the proper installation/use.
thoroughly understand all the operations necessary for the proper use and the ordinary disposal, and
all the general safety instructions and warnings provided in the manual.
4.2 Conditions of use not permitted
The use of DQ61 in areas classified in category 20, 21 or 22 and / or 0, 1, 2 according to EU Directive
94/9, called Atex, is expressly prohibited.
It is forbidden to use the DQ61 by personnel which is untrained and not aware of the risks related to the
use of the device.

Pag. 6
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
P. I.V.A. e Cod. Fisc.: IT 04273220485 REA CCIAA Firenze: n. 0433306 • Registro Imprese n. FI017 -58513
Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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4.3 Technical specifications
Power supply
Universal 90-250Vac 50-60Hz and 16…26Vcc/ac, 7VA
Available inputs
N°4 RTD Pt100 –3 wires
Cable lengts compensation
Up to 500m (0.5 mm2)
External connections
Terminals wiring up to AWG 17 for Pt100, up to AWG14 for
power and relays
Temperature range
-20 … +200°C
Accuracy
Better than 0,4°C ±1 digit
Output alarm relays
N°2 SPDT 5A 250V for ALLARM and TRIP
Output Fan relay
N°1 SPDT 5A 250V
Output Fault relay
N°1 SPDT 5A 250V
Display
Graphic OLED 2,4” 128x64 pixel
Keyboard
Touch capacitive
Alarms signaling
With 4 dedicated LED and text message on display
Menu language
Italian, English, French, Espanol, more on request
Unit of measure
°C or °F
Dimensions
Front 96x96mm; depth 115mm
Mounting
Front panel
Panel cut-out
90x90mm
Building according CE directives
2006/95/CEE (Lov Voltage) e 2004/108/CEE (EMC)
Protection against electrical noise
EN61326-1
Dielectric strength
2500Vac for 1 minute
Isolation
Better than 100MOhm at 500Vcc ground -other terminals
Frontal protection
IP40, IP65 optional
Ambient operating temperature
-20 … +60°C
Ambient operating humitity
Max 90% no-condensing
MTBF
Better than 100.000 hours
Data storage
More than 10 years
Recorded data
Each channel Max temperature;
Each alarm number of activactions
Remote control (optional)
Optoisolated RS485, MODBUS RTU protocol
Self-diagnosis, with error signal on the FAULT relay.
Integrated counters (partial and total), for hours of work done.
Ability to schedule the regular switch-on of the fans from the service menu.
FCD function: ability to set an alarm if the temperature change is too fast (°C/s), from the service
menu
Ability to disable alarms activation for probes P1 P2 and P3 from the service menu.
Ability to disable alarm activation for probe P4 from user menu.

Pag. 7
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
P. I.V.A. e Cod. Fisc.: IT 04273220485 REA CCIAA Firenze: n. 0433306 • Registro Imprese n. FI017 -58513
Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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5 Funzionamento e uso
5.1 Control Panel
Figure 2
Table 1: Panel Layout
1.
Display
In normal operation it displays the measured temperatures.
During programming it guides the user to setup the parameters.
2.
Status Row
Located at the bottom of the display, it shows the operating
condition of the DQ61, alarm conditions particularly.
3.
LED group
The A1 LED indicates that the cooling fan is ON.
The A2 LED indicates an alarm condition.
The A3 LED signals the activation of the tripping relay.
The A4 LED indicates a fault condition within the unit or on the
probes
4.
MENU/ESC Pushbutton
Allows to enter or exit the programming menu.
5.
+ / INCREASE Pushbutton
Increase the value of a selected parameter / Displays the menu
page or the previous line to the current one.
6.
- / DECREASE Pushbutton
Decreases the value of a selected parameter / Displays the menu
page or the following line to the current one.
7.
ENTER/MUTE Pushbutton
In normal operation: Allows to silence the buzzer.
When setting parameters: Confirm the set value and pass to the
next parameter.
1
3
4
5
7
6
2

Pag. 8
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
P. I.V.A. e Cod. Fisc.: IT 04273220485 REA CCIAA Firenze: n. 0433306 • Registro Imprese n. FI017 -58513
Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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5.2 Rear Panel
Figure 3
Table 2: Terminal Blocks
Terminal Reference
number
1.
1 2 3 4
Common terminal shield for Pt100 probes
2.
5 … 16
Terminals for connection to Pt100 sensors
3.
17 18 19
Optional RS485 Serial Communication
4.
20 21 22
Power Supply 16-26Vac-dc
5.
23 24 25
Power Supply 90-250Vac
6.
26 … 37
Relays Terminal Blocks (5A 250V)
5.3 Power Supply
On the secondary of large transformers may be present very strong transient disturbances, which might exceed
the filters and safeguards built into DQ61 and destroy it; for this reason it is advisable to power it by a
transformer 24VAC or 24VDC power supply. If the power is taken directly from the secondary of the
transformer to be protected, fit a suitable additional filter. For more information please contact QUANTA S.r.l.
5.4 Electrical Connections
For the connection of the measuring sensors (Pt100) it is essential to observe the following rules:
They must be placed separate from the power cables.
They must be made with shielded twisted conductors.
Must have a minimum cross section of 0.5 mm2.
Must have conductors silver or tin.
1
2
6
5
4
3

Pag. 9
Via A. Ferrarin, 19-23 • 50145 Firenze (Italy) • Tel.: [phone] • Fax: [phone]
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Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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5.5 Pt100 probes electrical connections
Make Pt100 sensors connections as shown in the following diagram, using shielded cables:
Pt100 Pt100
Bianco White Rosso Red Rosso Red Schermo Shield
1 12 2
3 3
4 4
5 5
6 67 7
Figure 4
(Figure 4 shows the connection of the single P1 probe). If they are available two-wire Pt100, connect terminals
6 and 7 together.
Do the same with the other probes, connecting to terminals 8 to 16 with the screens connected to terminals 2, 3
and 4.
The probes P1, P2 and P3 are those which measure the temperature of the three windings in a three-phase
transformer, while the probe P4 measures the temperature of the magnetic core. See the diagram below:
Pt100
P1 Pt100 P2
Pt100 P4
Pt100
P3
DQ61
Figure 5
5.6 Other electrical connections
Connect the low safety voltage power supply to terminals 21 and 22 or connect the mains supply to terminals
23, 24 and 25.
WARNING: even if the power supply applied to terminals 21 and 22 is at low safety voltage levels, the ground
terminal 24 must be connected, in order to maintain the effectiveness of noise filters and other internal devices.
5.7 Relays Functionality
The relays A1 A2 and A3 are normally at rest, while the relay A4 is normally activated, according to the
diagrams of example in Figure 6 and Figure 7.
The output A1 (signaled by LED FAN) switches when one of the sensors reaches the activation
temperature of the fan.

Pag. 10
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Banche: INTESA-SAN PAOLO - ABI: 06160, CAB: 02848 UNICREDIT –ABI 02008, CAB: 38106
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The relay A2 (signaled by the ALARM LED) switches when the probe reaches the alarm temperature.
Enabling this relay can be delayed by setting a time in the user menu.
The relay A3 (signaled by LED TRIP) switches when one of the probes reaches a temperature of
release.
The working mode of this relay can be controlled by the user menu:
Standard mode: It is active when you reach the alarm condition and remains active until the
condition persists.
Latching mode: Keeps the alarm indefinitely, even to the end of the cause of the alarm.
Pulse mode: It is activated for a predetermined time and then returns to the rest condition.
The relay A4 (indicated by LED FAULT) is always on and going off to signal a DQ61 fault condition or a
fault condition in one or more probes.
A1 A2 A3 A4
26 27 28 29 30 31 32 33 34 35 36 37
Figure 6
Relay in its rest position; DQ61 ON
A1 A2 A3 A4
26 27 28 29 30 31 32 33 34 35 36 37
Figure 7
Fan activated; Fault DQ61 and/or fault probe
5.8 Buzzer features
The buzzer is activated at the reach of alarm set-point (ALARM), which also activates the relay A2, and beeps
intermittently slow until the end of cause for alarm.
The buzzer sounds intermittently fast, when it reaches the release set-point (TRIP) which activates the relay
A3.
The buzzer sounds a continuous tone to indicate the fault condition of a Pt100 probe.
The MUTE key mute the buzzer when alarm is active. In the state of silencing the buzzer wakes up in the
presence of new alarm events.
The activation of the buzzer on alarm can be inhibited by the service menu..
Type of sound
Cause reported
Continuous
One or more probes are faulty
Intermittent slow
Active alarm relay (ALARM)
Intermittent fast
Active tripping relay (TRIP)