Circutor DHC-96 mAdc User manual

INSTRUCTION MANUAL
(M227B01-03-22A)
DC Ammeter
DHC-96 mAdc, DHC-96 Adc

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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

SAFETY PRECAUTIONS
DISCLAIMER
CIRCUTOR S.A.U. reserves the right to make modifications to the device or the unit specifications set
out in this instruction manual without prior notice.
CIRCUTOR S.A.U. on its web site, supplies its customers with the latest versions of the device specifi-
cations and the most updated manuals.
www.circutor.com
CIRCUTOR S.A.U. recommends using the original cables and accessories that are sup-
plied with the device.
DANGER
Warns of a risk, which could result in personal injury or material damage.
ATTENTION
Indicates that special attention should be paid to a specific 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 device may result in injury to personnel as well as damage to
the device. 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
fire.
Read the manual carefully prior to connecting the device. Follow all installation and maintenance in-
structions throughout the device’s working life. Pay special attention to the installation standards of
the National Electrical Code.
Refer to the instruction manual before using the device
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 device and/or installations.
CIRCUTOR S.A.U. reserves the right to modify features or the product manual without prior notification.
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

CONTENTS
SAFETY PRECAUTIONS .........................................................................................................................................................3
DISCLAIMER ..........................................................................................................................................................................3
CONTENTS.............................................................................................................................................................................4
REVISION LOG .......................................................................................................................................................................6
SYMBOLS...............................................................................................................................................................................6
1. VERIFICATION UPON RECEPTION....................................................................................................................................7
2. PRODUCT DESCRIPTION .................................................................................................................................................7
3. DEVICE INSTALLATION....................................................................................................................................................9
3.1.- PRIOR RECOMMENDATIONS ....................................................................................................................................9
3.2.- INSTALLATION ....................................................................................................................................................... 10
3.3.- DEVICE TERMINALS................................................................................................................................................11
3.4.- CONNECTION DIAGRAM......................................................................................................................................... 12
4. OPERATION.................................................................................................................................................................... 13
4.1.- DISPLAY ................................................................................................................................................................. 13
4.2.- KEYBOARD FUNCTIONS ......................................................................................................................................... 13
4.3.- RELAY OUTPUTS .................................................................................................................................................. 14
4.4.- ANALOG OUTPUT .................................................................................................................................................. 14
4.5.- ENTRADAS DIGITALES .......................................................................................................................................... 14
4.6.- DISPLAY................................................................................................................................................................. 14
5. CONFIGURATION ........................................................................................................................................................... 16
5.1.- CONFIGURATION OF THE INPUT ............................................................................................................................ 18
5.1.1.- DISPLAY VALUE .............................................................................................................................................. 18
5.1.2.- UNITS OF THE DISPLAY VALUE...................................................................................................................... 19
5.1.3.- MEASUREMENT RANGE................................................................................................................................. 19
5.1.4.- SAVE CONFIGURATION ...................................................................................................................................20
5.2.- RS-485 COMMUNICATIONS....................................................................................................................................20
5.2.1.- MODBUS ADDRESS ....................................................................................................................................... 21
5.2.2.- BAUD RATE ....................................................................................................................................................22
5.2.3.- DATA FORMAT................................................................................................................................................22
5.2.4.- SAVE CONFIGURATION...................................................................................................................................22
5.3.- ANALOG OUTPUT ..................................................................................................................................................23
5.3.1.- TYPE OF OUTPUT...........................................................................................................................................24
5.3.2.- READING FOR THE START OF THE ANALOG OUTPUT ....................................................................................24
5.3.3.- READING FOR THE END OF THE ANALOG OUTPUT........................................................................................25
5.3.4.- SAVE CONFIGURATION...................................................................................................................................25
5.4.- RELAY OUTPUT 1...................................................................................................................................................26
5.4.1.- RELAY MODE..................................................................................................................................................26
5.4.2.- RELAY PULSE DURATION............................................................................................................................... 27
5.4.3.- ALARM PARAMETER .....................................................................................................................................28
5.4.4.- CONNECTION DELAY ......................................................................................................................................28
5.4.5.- ALARM VALUE ...............................................................................................................................................29
5.4.6.- HYSTERESIS...................................................................................................................................................29
5.4.7.- SAVE CONFIGURATION ...................................................................................................................................30
5.5.- RELAY OUTPUT 2 ...................................................................................................................................................30
5.6.- CONFIGURATION OF THE DISPLAY .........................................................................................................................30
5.6.1.- PASSWORD OFF ACCESS ................................................................................................................................ 31
5.6.2.- BRIGHTNESS OF THE DISPLAY...................................................................................................................... 31
5.6.3.- LIGHT ALARM ...............................................................................................................................................32
5.6.4.- SAVE CONFIGURATION...................................................................................................................................32
5.7.- SOFTWARE VERSION .............................................................................................................................................33
6. RS485 COMMUNICATIONS .........................................................................................................................................34
6.1.- CONNECTIONS .......................................................................................................................................................34
6.2.- MODBUS PROTOCOL..............................................................................................................................................35
6.2.1. READING EXAMPLE : FUNCTION 0x01.............................................................................................................35
6.2.2. EXAMPLE OF OPERATION OF THE REMOTE CONTROL: FUNCTION 0X05......................................................35
6.3.- MODBUS COMMANDS ...........................................................................................................................................36
6.3.1.- MEASUREMENT VARIABLES AND DEVICE STATUS ........................................................................................36
6.3.2.- OUTPUT RELAYS............................................................................................................................................36
6.3.3.- DIGITAL INPUTS .............................................................................................................................................37
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

6.3.4.- REMOTE CONTROL OUTPUT (Relay output)................................................................................................. 37
6.3.5.- DEVICE CONFIGURATION VARIABLES ...........................................................................................................38
7. TECHNICAL FEATURES .................................................................................................................................................40
8. MAINTENANCE AND TECHNICAL SERVICE ..................................................................................................................43
9. GUARANTEE .................................................................................................................................................................43
10. CE CERTIFICATE..........................................................................................................................................................44
ANNEX A. CONFIGURATION MENU................................................................................................................................... 47
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

REVISION LOG
Table 1: Revision log.
Date Revision Description
11/18 M227B01-03-18A Initial Version
01/19 M227B01-03-19A Change in the following sections:
6.1.- 7.- 10.
02/20 M227B01-03-20A
Change in the following sections:
2.- 5.1. - 5.3.2.- 5.3.3.- 5.4.5.- 5.4.6.- 6.1.- 6.3.1.- 6.3.2. - 6.3.3.-
6.3.4.- 6.3.5.3. - 6.3.5.4.- 6.3.5.5.- Anexo A
09/22 M227B01-03-22A Change in the following sections:
6.3.5.1.
Note: Devices images are for illustrative purposes only and may differ from the actual device.
SYMBOLS
Table 2: Symbols.
Symbol Description
In compliance with the relevant European directive.
Device covered by European directive 2012/19/EC. At the end of its useful life,
do not leave the unit in a household waste container. Follow local regulations on
electronic equipment recycling.
DC current
~AC current
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

1. VERIFICATION UPON RECEPTION
Check the following points when you receive the device:
a) The device meets the specifications described in your order.
b) The device has not suffered any damage during transport.
c) Perform an external visual inspection of the device prior to switching it on.
d) Check that it has been delivered with the following:
- An installation guide,
If any problem is noticed upon reception, immediately contact the transport com-
pany and/or CIRCUTOR's after-sales service.
2. PRODUCT DESCRIPTION
The DHC-96 Adc gamma is designed to measure and display the DC current. CIRCUTOR has 2 models,
for different current ranges:
DHC-96 mAdc with 3 programmable current scales: ±20 mA, 0...20 mA and 4...20 mA.
DHC-96 Adc with 2 programmable current scales: 1 A and 5 A.
The device features:
- 4 keys that allow you to browse between the various screens and program the device.
- LED display, displays all parameters.
- 2 fully programmable relay outputs
- 2 digital inputs.
- 1 programmable analog output
- Communications RS-485.
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

List of models:
DHC-96 mAdc
Table 3:DHC-96 mAdc list of models.
Model Power Supply
80 ... 270 V ~ 80 ... 270 V 18 .. 36 V
M22368   -
M223680030000 - - 
DHC-96 Adc
Table 4:DHC-96 Adc list of models.
Model Power Supply
80 ... 270 V ~ 80 ... 270 V 18 .. 36 V
M22378   -
M223780030000 - - 
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

3. DEVICE INSTALLATION
3.1.- PRIOR RECOMMENDATIONS
In order to use the device 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
necessary personal protective equipment, and pay attention to the various warnings
indicated in this instruction manual.
The DHC-96 Adc device must be installed by authorised and qualified staff.
The power supply plug must be disconnected and measuring systems switched off before handling, al-
tering the connections or replacing the device. It is dangerous to handle the device while it is powered.
Also, it is critical to keep the cables in perfect condition in order to avoid accidents, personal injury and
damage to installations.
The device’s functionality is limited to the category of measuring voltage or specific current values.
The manufacturer of the device 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 non-original products or accessories or those made by other manufacturers.
If an anomaly or malfunction is detected in the device, do not use it to take any measurements.
Disconnect the device from the power supply (device and measuring system power
supply) before maintaining, repairing or handling the device's connections.
Please contact the after-sales service if you suspect that there is an operational fault
in the device.
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

3.2.- INSTALLATION
Terminals, opening covers or removing elements can expose parts that are hazard-
ous to the touch while the device is powered. Do not use the device until it is fully
installed.
The device should be installed inside an electric panel or enclosure, and panel-mounted.
To install it, take the following steps:
1.- Make a cut in the panel, according to the dimensions in Figure 1.
91
44
Figure 1: Cut in the panel.
2.- Remove the device’s fixing clips (Figure 2).
Clip de jación / Fixing clip
Figure 2: Installation.
3.- Insert the device into the cut in the panel.
4.- Fit the fixing clips until the device is fixed to the panel.
The device should be connected to a power circuit protected by a fuse with a maximum nominal cur-
rent of 0.25 A.
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

3.3.- DEVICE TERMINALS
Table 5:List of terminals of the DHC-96 Adc.
Device terminals
1 : L, Auxiliary power supply. 31: Alarm output 2, relay (Common)
2: N, Auxiliary power supply. 32: Alarm output 2, relay (NO)
4: +, Current measurement input 58: A, RS-485
5: -, Current measurement input 59: B, RS-485
15:-, Analog output 70: Common digital input
16: +, Analog output 71: Digital input 1
28: Alarm output 1, relay (Common) 72: Digital input 2
29: Alarm output 1, relay (NO)
4
70 59 71
1 2
28 29 31 32
12
5
72 58 28 29 31 32 1615
15 16
71 72 70 59 58
54
Figure 3:Terminals of the DHC-96 Adc.
Note: Before disconnecting the current measurement connection cables, make sure that you disconnect
the transformer’s primary cable and bridge the secondary.
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

3.4.- CONNECTION DIAGRAM
1 2
70 5971
1 2
72 58 28 29 31 32 1615
+-
B A
RS-485
C
1 2
1 2
I
45
+
-
Alimentación Auxiliar
Power Supply
Salida de relés
Digital inputs
Relay output
Analog output
Entradas Digitales
Salida Analógica
Figure 4: Current measurement DHC-96 Adc.
Make sure that the positive and negative current terminals are as shown in the connection diagram.
Note: The current measurement cable can be directly connected to the terminals of the 0 ... 5A device.
Use an adapter for higher current values.
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

4. OPERATION
4.1.- DISPLAY
The device features a 5-digit LED display, which is used to display the measured parameters and to
configure these parameters
Display
Keyboard
00000
Figure 5: Display DHC-96.
4.2.- KEYBOARD FUNCTIONS
The DHC-96 Adc features 4 keys to display and configure the device, Figure 5.
Table 6: Keyboard functions.
Key Keystroke
Previous screen
In the configuration menu:
Scroll through the digits
Next screen
In the configuration menu:
Increase the value of the digit
Long keystroke (> 3s):
Enter in configuration menu
In the configuration menu:
Jump to the next level/Confirm an operation
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

4.3.- RELAY OUTPUTS
The device features two programmable relay outputs (terminals 28, 29, 31 and 32, as shown in Figure 6)
that can be programmed as remote control signals or alarms in the setup menu (“5.4.- RELAY OUTPUT
1” and “5.5.- RELAY OUTPUT 2”).
1 2
70 5971
1 2
72 58 28 29 31 32 1615
+-
B A
RS-485
C
1 2
1 2
I
S1S2
P1
P2
45
Alimentación Auxiliar
Power Supply
Salida de relés
Digital inputs
Relay output
Analog output
Entradas Digitales
Salida Analógica
Figure 6: Relay outputs, digital inputs and Analog output.
4.4.- ANALOG OUTPUT
The device has an analog output (terminals15 and 16 of Figure 6) programmable through the configu-
ration menu (“5.3.- ANALOG OUTPUT”)
4.5.- ENTRADAS DIGITALES
The device has two digital inputs (terminals 70, 71 and 72 of Figure 6).The relay outputs can be activat-
ed depending on the value of the digital inputs (See “5.4.- RELAY OUTPUT 1” and “5.5.- RELAY OUTPUT 2”
4.6.- DISPLAY
The DHC-96 Adc features 3 display screens, Table 7.
Table 7: Display menu.
Display menu
5.000
Current
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

Table 7 (Continuation) : Display menu.
Display menu
di
12
Status of digital inputs:
1, status of the digital input 1: flashes when the input is activated
2,status of the digital input 2: flashes when the input is activated
do
12
Status of the relay outputs:
1,status of the relay output 1: flashes when the relay is activated
2, status of the relay output 2: flashes when the relay is activated
If the current value measured by the device is higher than a % of the nominal value, the device can
make the digits on the display start flashing, in the form of a light alarm. See “5.6.3.- LIGHT ALARM”
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

5. CONFIGURATION
Press and hold the key for more than 3 seconds to enter the configuration menu of the device.
The configuration of the device is organized in different menus, Figure 7.
rEAd
inPt
do-1
do-2
SEt
uEr
>3s
ProG
ñ-ñ-
Conguration of
the input
Relay output 1
Relay output 2
Conguration of
the display
Software version
Communications
Analog output
5.000
Conn
Ao-1
Figure 7: Configuration menu of the DHC-96 Adc.
From any screen of the configuration menus, if no key is pressed for 4 minutes, the device leaves the
configuration menu and returns to the display screen.
Note: In “ANNEX A. CONFIGURATION MENU” you can see the complete configuration menu.
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

On the rEAd screen, press the ,key to access the configuration menu in the display mode, i.e.,
the configuration parameters cannot be modified.
On the rEAd screen, press the or keys to access the configuration menu in the program-
ming mode, i.e., the configuration parameters can be modified.
rEAd ProG CodE 0000
inPt
Figure 8: Access the configuration menu in the programming mode.
Before accessing the configuration menu, it is necessary to enter the access password.
CodE
0000
Figure 9: Access password.
Use the , key to modify the value of the flashing digit
When the desired value is shown on the screen, press the key to skip the digit.
Default password: 0001
Note : The password can be modified, see “5.6.1.- PASSWORD OF ACCESS”.
To validate the data, press the key.
If the password entered is incorrect, the Errmessage will appear for a few seconds and the device
will return to the password configuration screen, Figure 9.
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Instruction Manual
DHC-96 mAdc, DHC-96 Adc

5.1.- CONFIGURATION OF THE INPUT
Figure 10, shows the main screen of the input configuration menu, from which the display value and
measurement range are configured.
inPt
Figure 10: Input configuration menu, main screen.
Press the key to open the configuration menu.
inPt
in i
Unt. i
in 2
1.000
oFF
5.000
Figure 11:Input configuration menu.
5.1.1.- DISPLAY VALUE
In this screen, the value to be displayed is configured when the maximum value of the measurement
range enters the device.
in i 1.000
Use the , key to modify the value of the flashing digit
When the desired value is shown on the screen, press the key to skip the digit.
When you reach the last digit and press the key, you select the position of the decimal point.
Use the to modify the decimal point.
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual

Configuration values
Table 8:Configuration values: Display value.
Display value
Minimum value 1.000
Maximum value 9999
To validate the data, press the key.
Use the and keys to browse the configuration screens of the menu.
5.1.2.- UNITS OF THE DISPLAY VALUE
This screen is used to configure the units of the display value.
Unt. i oFF
Use the ,key to browse the different options.
Configuration values
Table 9: Configuration values: Units of the display value.
Units of the display value
Possible values oFF the unit of the display value is A.
on the unit of the display value is kA.
To validate the data, press the key.
Use the and keys to browse the configuration screens of the menu.
5.1.3.- MEASUREMENT RANGE
In this screen, the measurement range of the input signal is configured.
in 2 5.000
Use the and keys at the same time to configure the value.
Use the ,key to browse the different options.
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DHC-96 mAdc, DHC-96 Adc

Configuration values
Table 10: Configuration values: Measurement range.
Measurement range
Possible values
DHC-96 mAdc model
0-20 For the current scale of 0 ... 20 mA.
4-20 For the current scale of 4 ... 20 mA.
20.20 For the current scale of ± 20 mA.
DHC-96 Adc model
5.000 For the current scale of 0 ... 5 A.
1.000 For the current scale of 0 ... 1 A.
To validate the data, press the key.
Use the and keys to browse the configuration screens of the menu.
5.1.4.- SAVE CONFIGURATION
To save the configuration of the device, press the key, until the main screen of the input config-
uration menu is opened, Figure 10.
Press the key again to show the validation screen.
SAuE no
Use the ,key to browse the different options.
Configuration values
Table 11: Configuration values: Save configuration.
Save configuration
Possible values no Exit the configuration without saving the changed values.
yEs Save the changed configuration values.
Press the key to validate the data and exit the configuration menu.
5.2.- RS-485 COMMUNICATIONS
Figure 12, shows the main screen of the communications menu, where the parameters of the RS-485
communications are configured.
Conn
--
Figure 12: RS-485 communications menu, main screen.
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DHC-96 mAdc, DHC-96 Adc
Instruction Manual