Circutor DHB-302 User manual

INSTRUCTION MANUAL
(M044B01-03-17A)
Single-phase Vac analyzer
DHB-302 DHB-324

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DHB-302 DHB-324
Instruction Manual

SAFETY PRECAUTIONS
DISCLAIMER
CIRCUTOR, SA reserves the right to make modi cations to the device or the unit speci ca-
tions set out in this instruction manual without prior notice.
CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device
speci cations and the most updated manuals.
www.circutor.com
DANGER
Warns of a risk, which could result in personal injury or material damage.
ATTENTION
Indicates that special attention should be paid to a speci c point.
Follow the warnings described in this manual with the symbols shown below.
If you must handle the unit for its installation, start-up or maintenance, the following
should be taken into consideration:
Incorrect handling or installation of the unit may result in injury to personnel as well as damage
to the unit. In particular, handling with voltages applied may result in electric shock, which may
cause death or serious injury to personnel. Defective installation or maintenance may also
lead to the risk of  re.
Read the manual carefully prior to connecting the unit. Follow all installation and maintenance
instructions throughout the unit’s working life. Pay special attention to the installation stan-
dards of the National Electrical Code.
Refer to the instruction manual before using the unit
In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can
result in injury or damage to the unit and /or installations.
CIRCUTOR, SA reserves the right to modify features or the product manual without prior noti cation.
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Instruction Manual
DHB-302 DHB-324

CONTENTS
SAFETY PRECAUTIONS .......................................................................................................................................3
DISCLAIMER ..........................................................................................................................................................3
CONTENTS.............................................................................................................................................................4
REVISION LOG.......................................................................................................................................................5
1.- VERIFICATION UPON RECEPTION.................................................................................................................6
2.- PRODUCT DESCRIPTION................................................................................................................................6
3.- UNIT INSTALLATION ........................................................................................................................................7
3.1.- PRELIMINARY RECOMMENDATIONS ....................................................................................................7
3.2.- INSTALLATION .........................................................................................................................................8
3.3.- UNIT TERMINALS.....................................................................................................................................9
3.3.1.- LIST OF TERMINALS, DHB-302 MODEL. ......................................................................................9
3.3.2.- LIST OF TERMINALS, DHB-324 MODELS...................................................................................10
3.4.- CONNECTION DIAGRAM....................................................................................................................... 11
3.4.1.- DIRECT CONNECTION ................................................................................................................. 11
3.4.2.- INDIRECT CONNECTION.............................................................................................................. 11
4.- OPERATION ...................................................................................................................................................12
4.1.- MEASURING PARAMETERS .................................................................................................................12
4.2.- DISPLAY .................................................................................................................................................. 13
4.3.- BUTTON FUNCTIONS ............................................................................................................................14
4.4.- IMPULSE OUTPUT (DHB-324 model) ................................................................................................... 14
4.5.- ALARMS ..................................................................................................................................................14
4.6.- CONFIGURATION ...................................................................................................................................16
4.6.1. PARAMETERS ................................................................................................................................18
4.6.2 DISPLAY ...........................................................................................................................................24
4.6.3. ALARM 1 ......................................................................................................................................... 30
4.6.4. ALARM 2 ......................................................................................................................................... 35
4.6.5. ALARM 3. ....................................................................................................................................... 35
4.6.6. ALARM 4......................................................................................................................................... 35
4.6.7. OUTPUTS (DHB-324 model). ......................................................................................................... 35
4.6.8. SERVICE..........................................................................................................................................41
4.7.- COMMUNICATIONS (DHB-324 model)..................................................................................................48
4.7.1 CONNECTIONS................................................................................................................................48
4.7.2.- MODBUS PROTOCOL................................................................................................................... 49
4.7.3- MODBUS MEMORY MAP ............................................................................................................... 49
5.- TECHNICAL FEATURES ................................................................................................................................62
6.- MAINTENANCE AND TECHNICAL SERVICE................................................................................................ 65
7.- WARRANTY.....................................................................................................................................................65
8.- CE CERTIFICATE............................................................................................................................................66
APPENDIX A: DISPLAY MESSAGES..................................................................................................................67
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DHB-302 DHB-324
Instruction Manual

REVISION LOG
Table 1: Revision log.
Date Revision Description
09/14 M044B01-03-14A Initial version
08/15 M044B01-03-15A Global revision
02/16 M044B01-03-16A Changes in the following sections:
3.3.1. - 3.3.2. - 4.1. - 4.5.
06/17 M044B01-03-17A Changes in the following sections:
5.
Note: The images of the units are solely for the purpose of illustration and may differ from the
original unit.
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Instruction Manual
DHB-302 DHB-324

1.- VERIFICATION UPON RECEPTION
Check the following points when you receive the unit:
a) The unit meets the specications described in your order.
b) The unit has not suffered any damage during transport.
c) Perform an external visual inspection of the unit prior to switching it on.
d) Check that it has been delivered with the following:
- An installation guide,
- Four retainers for rear attachment of the unit,
- 3 connection terminals.
- 1 units of measurement label
If any problem is noticed upon reception, immediately contact the transport
company and/or CIRCUTOR's after-sales service.
2.- PRODUCT DESCRIPTION
The DHB-3xx is a programmable panel unit that measures, calculates and displays the main
electrical parameters in single-phase networks: voltage, current, frequency, power, energy, cos
ᵩ. tg ᵩ and ᵩ, as well as the current time.
There are 2 versions of the unit depending on the number of alarms and features of the unit.
DHB-302, with 2 alarm relays.
DHB-324, with 4 alarm relays, 2 analogue outputs and communications RS-485.
The unit features:
- 4 buttons that allow you to browse between the various screens and program the unit.
- LCD Display, which displays all the parameters.
- 2 alarm relays, fully programmable (DHB-304 model).
- 2 analogue outputs, fully programmable. (DHB-324 model).
- 4 alarm relays, fully programmable (DHB-324 model).
- RS-485 communications, MODBUS RTU©. (DHB-324 model).
- Impulse output (DHB-324 model).
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DHB-302 DHB-324
Instruction Manual

3.- UNIT INSTALLATION
3.1.- PRELIMINARY RECOMMENDATIONS
In order to use the unit safely, it is critical that individuals who handle it follow the
safety measures set out in the standards of the country where it is being used,
use the personal protective equipment necessary, and pay attention to the vari-
ous warnings indicated in this instruction manual.
The DHB-3xx unit must be installed by authorised and qualied staff.
The power supply plug must be disconnected and measuring systems switched off before han-
dling, altering the connections or replacing the unit. It is dangerous to handle the unit while it is
powered.
Also, it is critical to keep the cables in perfect condition to avoid accidents, personal injury and
damage to installations.
The manufacturer of the unit is not responsible for any damage resulting from failure by the
user or installer to heed the warnings and/or recommendations set out in this manual, nor for
damage resulting from the use of products or accessories that did not come with the unit or that
were made by other manufacturers.
If an anomaly or malfunction is detected in the unit, do not use the unit to take any measure-
ments.
Inspect the work area before taking any measurements. Do not take measurements in danger-
ous areas or where there is a risk of explosion.
Disconnect the unit from the power supply (unit and measuring system power
supply) before maintaining, repairing or handling the unit's connections.
Please contact the after-sales service if you suspect that there is an operational
fault in the unit.
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Instruction Manual
DHB-302 DHB-324

3.2.- INSTALLATION
The unit is installed on a panel. The thickness should not exceed 6 mm. Drill panel at 92+0.6 x
45+0.6 mm.
Terminals, opening roofs or removing elements can expose parts that are haz-
ardous to the touch while the unit is powered. Do not use the unit until it is fully
installed.
All the connections are located inside the electric panel. The unit must be installed on the panel
from the front. Attach the unit with the 4 panel assembly accessories (Figure 1)
Cable cross-section for connections up to: 2.5 mm2.
The unit must be connected to a power circuit protected by a circuit breaker switch or equiva-
lent device located close to unit, marked accordingly, and easily accessed by the operator.
Figure 1: Unit installation and attachment
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3.3.- UNIT TERMINALS
3.3.1.- List of terminals, DHB-302 model.
Table 2:List of terminals on the DHB-302.
Unit terminals
2: 1A, 5A , Current measurement input 9: AL1, Alarm 1 relay output (NO)
3: 1A, 5A , Current measurement output 10: AL1, Alarm 1 relay output (Common)
4,6,13,14: Not used 11: AL2, Alarm 2 relay output (NO)
5: 100 V, 400 V, Voltage measurement input 12: AL2 ,Alarm 2 relay output (Common)
7: 100 V, 400 V, Voltage measurement input 15,16: Auxiliary power supply
DHB-302
Figure 2:Terminal of the DHB-302.
Note: The input, output and power supply lines are galvanically separated from each other.
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DHB-302 DHB-324

3.3.2.- List of terminals, DHB-324 models.
Table 3:List of terminals on the DHB-324.
Unit terminals
2: 1A, 5A , Current measurement input 23: 10V+ , Analogue voltage output
3: 1A, 5A , Current measurement output 24: 10V , Analogue voltage output
4,6,13,14, 33: Not used 25: 20mA+, Analogue current output
5: 100 V, 400 V, Voltage measurement input 26: 20mA , Analogue current output
7: 100 V, 400 V, Voltage measurement input 27: OC +, Energy impulse output
9: AL1, Alarm 1 relay output (NO) 28: OC, Energy impulse output
10: AL1, Alarm 1 relay output (Common) 29, 30 : Not used
11: AL2, Alarm 2 relay output (NO) 31: AL3, Alarm 3 relay output (Common)
12: AL2 ,Alarm 2 relay output (Common) 32: AL3, Alarm 3 relay output (NC)
15,16: Auxiliary power supply 33: AL3, Alarm 3 relay output (NO)
20: B, RS-485 34: AL4, Alarm 4 relay output (Common)
21: A, RS-485 35: AL4, Alarm 4 relay output (NC)
22: GND, for RS-485 36: AL4, Alarm 4 relay output (NO)
DHB-302 / DHB-324
29 30 31 32 33 34 35 36
Figure 3:Terminal of the DHB-324.
Note: The input, output, power supply and RS-485 communications lines are galvanically
separated from each other.
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DHB-302 DHB-324
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3.4.- CONNECTION DIAGRAM
3.4.1.- Direct connection
Power
Supply
L1
DHB-302 / DHB-324
L2 or N
V
A
LOAD
29 30 31 32 33 34 35 36
Figure 4: Direct connection, DHB-302 and DHB-324 models.
3.4.2.- Indirect connection.
Power
Supply
DHB-302 / DHB-324
S1 S2
P1 P2
ab
AB
L1
L2 or N
AV
LOAD
29 30 31 32 33 34 35 36
Figure 5: Indirect connection, DHB-302 and DHB-324 models.
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DHB-302 DHB-324

4.- OPERATION
4.1.- MEASURING PARAMETERS
The unit measures or calculates all the parameters in Table 4:
Table 4:Measurement parameters.
Parameter Display range Measurement range
RMS voltage (L-N) Range: 100 V 0.0 ... 0.48 MV 0.5 ... 120 V~
Range: 400 V 0.0 ... 1.92 MV 20 ... 480 V~
RMS current Range: 1 A 0.000 ... 12 kA~ 0.005 ... 1.200 A~
Range: 5 A 0.000 ... 60 kA~ 0.025 ... 6.000 A~
Frequency 45.00 ... 100.00 Hz 45.0 ... 100 Hz
Active power -19999 ... 99999 MW - 2.88 kW ... 2.88 kW
Reactive power -19999 Mvar ... 99999 Mvar - 2.88 kvar ... 2.88 kvar
Apparent power 0.00 ... 99999 MVA 1.40 VA ... 2.88 kVA
Power factor (cos φ) -1 ... 1 -1 ... 1
tg φ -1.2 ... 1.2 -1.2 ... 1.2
φ 0 ... 359 0 ... 359
Active energy generated 0 ... 9 999 999.9 kWh 0 ... 9 999 999.9 kWh
Active energy consumed 0 ... 9 999 999.9 kWh 0 ... 9 999 999.9 kWh
Reactive energy generated 0 ... 9 999 999.9 kvarh 0 ... 9 999 999.9 kvarh
Reactive energy consumed 0 ... 9 999 999.9 kvarh 0 ... 9 999 999.9 kvarh
Maximum demand for active power -19999 ... 99999 MW - 2.88 kW ...2.88 kW
Average voltage
(10 minutes)
Range: 100 V 0.0 ... 0.48 MV 0.5 ...120 V
Range: 400 V 0.0 ... 1.92 MV 20 ...480 V
Average frequency (10 seconds) 45.00 ... 100.00 Hz 45.0 ... 66.0 ... 100 Hz
Current time 0.00 ... 23.59 0.00 ... 23.59
The calculation times for the different parameters is:
 Power measurements: 15 seconds.
 Voltage measurements: 5 seconds.
 Frequency measurements: 1 second.
Minimal power measured:
Table 5:Minimal power measured
Range Minimal power measured
In class Class is not guaranteed
1 A, 100 V 1.4 W 0.025 W
1 A, 400 V 1.4 W 0.1 W
5 A, 100 V 1.4 W 0.125 W
5 A, 400 V 1.4 W 0.5 W
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DHB-302 DHB-324
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4.2.- DISPLAY
The display is divided into 2 areas:
Figure 6:
Measurement
data area
Unit of
measurement
area
Areas of the DHB-3xx display
Measurement data area, for viewing the value of the parameter measured or calculat-
ed by the unit.
Unit of measurement area, where you can see the unit for the parameter you are
viewing. To do so, select the label with the unit of measurement you wish to use and stick
it in its space. Then activate the corresponding LED (see section “4.6.8.4. DISPLAYING
THE UNIT OF MEASUREMENT.”)
and there are 7 LEDs, Figure 7:
Figure 7:
Alarm LEDs
k
M
LEDs of the DHB-3xx
4 alarm LEDs, indicating the active alarm.

2 LEDs K and M indicating the magnitude of the K (Kilo) and M (Mega) measurements.
 1LED to indicate that reactive power is being displayed.
The unit has a three-colour LED display: red, green and orange.
The unit can automatically change the colour of the display based on the programmable pa-
rameters in the display menu (lower colour limit, upper colour limit, lower colour, middle
colour and upper colour).
Example: In a voltage measurement you can program the display to be green when the volt-
age is below 100 V, orange when it is between 100 V and 500 V and red for voltages above
500 V. See section “4.6.2 DISPLAY.”
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DHB-302 DHB-324

4.3.- BUTTON FUNCTIONS
The DHB-3xx has 4 buttons that allow you to browse the various screens and program the unit
(Table 4):
Table 6: Button functions on the measurement screens.
Button Short press Long press (3 s)
- Enter the setup menu (editing mode)
Display maximum value. -
Display minimum value. -
- Enter the setup menu (display mode)
Delete the maximum value -
Delete the minimum value -
- Delete the alarm LED
-Display the different measurement
parameters
4.4.- IMPULSE OUTPUT (DHB-324 model)
The DHB-324 unit has one energy impulse output, terminals 27 and 28 of Table 3, with a xed
ratio of 5000 impulses/kWh.
See “5.- TECHNICAL FEATURES”
4.5.- ALARMS
The DHB-302 unit has:
 2 alarm relays, Alarm 1 and 2, terminals 9, 10, 11, and 12 of Table 2, with normally
open (NO) contact.
2 alarms, Alarm 3 and 4, fully programmable but not linked to any relay.
The DHB-324 model has:
 2 alarm relays, Alarm 1 and 2, terminals 9, 10, 11, and 12 of Table 2, with normally
open (NO) contact.
 2 switched alarm relays, Alarm 3 and 4, terminals 31, 32, 33, 34, 35, and 36 of
Table 3.
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Each of the alarms can operate in the following work modes (Figure 8):
 n-on: the alarm is activated when the average value exceeds the upper value PrH and
does not deactivate until it is below the lower value PrL.
n-off: the alarm is deactivated when the average value exceeds the upper value PrH
and does not activate until it is below the lower value PrL.
on: the alarm is activated when the average value exceeds the lower value PrL and
does not deactivate until it is above the upper value PrH.
off: the alarm is deactivated when the average value exceeds the lower value PrL and
does not activate until it is above the upper value PrH.
h-on: This option is always enabled for manual simulation.
h-off: This option is always disabled for manual simulation.
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
activated
Alarm
deactivated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
deactivated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
activated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
activated
Alarm
deactivated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
deactivated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
activated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
activated
Alarm
deactivated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
deactivated
1
0
PrL PrH Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
activated
1
0
PrL PrH
Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
1
0
PrL PrH
Measured
value
Alarm
output
Alarm
activated
Alarm
deactivated
1
0
PrL PrH
Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
deactivated
1
0
PrL PrH
Measured
value
Alarm
output
Alarm
deactivated
Alarm
activated
Alarm
activated
1
0
n-on n-off
on off
Figure 8: Alarm working modes.
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DHB-302 DHB-324

4.6.- CONFIGURATION
The unit has various setup menus where you can congure:

 The parameter that the unit will display.
 The display.
 The alarms.
The outputs (DHB-324 model).
The service parameters.
Input
0ser0
S
R
DHB-124
0oUt0
S
R
DHB-124
Alr01
S
R
DHB-124
Alr04
S
R
DHB-124
dIsp0
S
R
DHB-124
Display
screen
Parameters
Display parameters
Parameters of the alarms 1, 2, 3 and 4..
Service parameters
Parameters of the outputs (Model DHB-324)
Parameters of the alarms 1, 2, 3 and 4.
end
Figure 9: Accessing the setup menus
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DHB-302 DHB-324
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The DHB-3xx does not record programming changes until the conguration is complete. If the
unit is reset before nishing the conguration or if no button is pressed for 30 seconds, the con-
guration will not be stored in the memory.
To enter the setup menu press the button for 3 seconds.
If the setup menu is password-locked the display will read SEC along with a ashing 0value:
Figure 10:Password screen
To modify the password, press the button.
To modify the value of the selected digit, press the button repeatedly.
To jump to the next digit, press the button.
Once at the desired value, validate by pressing the button.
If the password is incorrect or no password has been entered, the screen in
Figure 11 will appear and the unit will go to the display screen.
Figure 11:Incorrect password screen.
If the password is correct, the unit will display the parameters screen Figure 16.
To permanently unlock the unit, see “4.6.8.2. PASSWORD.”
Note: By default, the unit comes without a password.
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DHB-302 DHB-324

4.6.1. PARAMETERS
This menu is used to congure the parameter to be shown on the display.
Press the button to access the rst conguration parameter.

S
R
DHB-324
Figure 12:Parameters menu main screen.
4.6.1.1. PARAMETER TO DISPLAY
This screen is used to select the parameter to be shown on the display.
The screen ashes between the symbol and the congured value. (Figure 13)
Figure 13: Parameter to display screen.
To edit the parameter, press the button.
The parameters that can be displayed are:
RMS voltage RMS current
Active power Reactive power
Apparent power Power factor
(cos φ)
tg φ φ
Frequency Active energy
Generated
Active energy
Consumed
Reactive energy
Generated
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DHB-302 DHB-324
Instruction Manual

Reactive energy
Consumed
Maximum demand for
active power
Average voltage
(10 minutes)
Average frequency
(10 seconds)
Current time
To move from one option to another, press the button repeatedly.
When you see the option you want, validate by pressing the button.
The unit goes back to the screen shown in Figure 13.
To move to the next parameter on the menu, press the button.
When the button is pressed, the unit goes to the main screen of the parameters menu
(Figure 12).
Default value: Active power (P).
4.6.1.2. SYNCHRONISATION
This conguration screen is used to select the type of synchronisation.
The screen ashes between the symbol and the congured value. (Figure 14).
Figure 14: Synchronisation screen.
To edit the parameter, press the button.
The options are:
Synchronisation with the voltage, the unit will measure all the parame-
ters.
Synchronisation with the current, the unit only measures the current and
the frequency.
To move from one option to another, press the button repeatedly.
When you see the option you want, validate by pressing the button.
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DHB-302 DHB-324

The unit goes back to the screen shown in Figure 14.
To move to the next parameter on the menu, press the button.
When the button is pressed, the unit goes to the main screen of the parameters menu
(Figure 12).
Default value: Synchronisation with the voltage (V).
4.6.1.3. VOLTAGE RANGE
This screen is used to congure the voltage range.
The screen ashes between the symbol and the congured value. (Figure 15).
Figure 15: Voltage range screen.
To edit the parameter, press the button.
The options are:
100 V. 400 V
To move from one option to another, press the button repeatedly.
When you see the option you want, validate by pressing the button.
The unit goes back to the screen shown in Figure 15.
To move to the next parameter on the menu, press the button.
When the button is pressed, the unit goes to the main screen of the parameters menu
(Figure 12).
Default value: 400 V.
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DHB-302 DHB-324
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