Universal measurement module ZET 7080-I

Type of sensors connected: current output sensors
Universal measuring module
RS-485 interface

From 74 USD

* Minimum order value: from 7 700 USD

Specifications

of Universal measurement module ZET 7080-I

Technical specifications
Measured parameter	The parameter is determined by the type of the connected sensor
Types of the sensors connected	Rotation sensor ВС 401 sensor with output 4‑20; 0‑20; 0‑5 mА
Sensor power	24 V
Maximum relative measuring tolerance	< 1 %
Refresh rate	1, 10, 50, 100, 200, 400 Hz
Data interface	RS-485
Data rate	4800, 9600, 14400, 19200, 38400, 57600, 115200 bit/s
Parity control	0 – no control, 1 – control (oddity, ODD)
Data communucation protocol	Modbus RTU
Operational parameters
Dimensions	71×39×17 mm
Weight	30 g
Device power	9 – 24 V
Power consumption	0,5 W
Polarity reversal protection	yes
Temperature operation rate	from -40 to +100 °С
Electromagnetic compatibility, EMC
MEK 61000-4-2 (IEC 61000-4-2), ESD	contact 4 kV, air 8 kV
MEK 61000-4-4 (IEC 61000-4-4), EFT	power 0,5 kV, signal 0,25 kV
MEK 61000-4-5 (IEC 61000-4-5), Surge	500 V

* The parameter is determined by the type of the sensor connected

"Encoder" mode operation
“Encoder” mode is configurable depending on the signal level and is used for RPM sensors. Measured parameters: rotation, speed, acceleration.
Available versions of the product
Standard: laboratory version – green plastic casing
ОЕМ: compound coating
Industrial*: standard module is placed into leak-proof casing with transparent cover
*Option

Special characteristics

of Universal measurement module ZET 7080-I

Measurement precision
ZET 7080-I is placed close to the sensor (or is integrated into the casing), so the digital conversion of the signals is performed near the sensing element – this allows to considerably reduce the interference effect.
Ready for operation
settings of the digital sensor are stored in the device memory, which allows to start measurement perfomance immediately after power supply connection without the need to calibrate measurement channels

Efficient perfomance
in order to organize a distributed measuring network based on digital sensors ZET 7080-I there is no need to use expensive cables since the data transfer is performed in digital format
No data processing needed
digital sensor provides final data, i.e. measured value readings, so no additional data processing is required

Directive 2011/65/EU (ROHS, ROHS II)

UNIVERSAL MEASUREMENT MODULES MEET THE REQUIREMENTS OF DIRECTIVE 2011/65/EU (ROHS, ROHS II) CONCERNING LIMITATION TO USE HAZARD SUBSTANCES (PB, HG, CD, CR(VI)) IN ELECTRICAL AND ELECTRONIC EQUIPMENT; THEY ARE MANUFACTURED USING LEAD-FREE METHOD, IN COMPLIANCE WITH THE EUROPEAN COMMUNITY REQUIREMENTS

Operating principles

of Universal measurement module ZET 7080-I

Universal measurement module ZET 7080-I together with a current output sensor form a digital sensor for various parameters measurement.

Primary transducer (current output sensor) converts physical value to electric signal. The measurement module performs the conversion of the signal and provides measured value readings in digital format. The results are transmitted via RS-485 Interface, Modbus protocol.

The sensors are fixed on the measured object, within leak-proof case or inside of electrical cabinet. The interface modules providing data transfer are placed into leak-proof case or inside of ZETLAB electrical cabinet.

ZETSENSOR modules are easy to install and to dismount, they have power indication and data transfer option which makes it easy to perform system on-site diagnostics.

Connection schemes

of Universal measurement module ZET 7080-I

Sensor connection: pin designation

Contact number	Labelling	Designation
1	24 V	Sensor power
2	GND	General
3	5 V	Not used
4	SIG	Signal from the sensor

Connectors designation for the connection to the measuring network

Contact number	Labelling	Designation
1	+(9…24) V	Orange
2	RS-485 line «B» or «DATA-»	Blue
3	RS-485 line «A» or «DATA+»	White-blue
4	GND	White-orange

Scheme of current output sensor connection to ZET 7080-I module

Схемы подключения датчиков к ZET 7080-I

Scheme of ВС 401 connection to ZET 7080-I

Схема подключения ВС 401 к ZET 7080-I

Based on the digital sensors there can be established distributed measurement networks. Measurement networks are connected to ZETLAB and ZETVIEW systems via interface converter ZET 7070. In the case if integrated power supply module ZET 7070 is used, the amount of the sensors that can be connected to ZET 7070 module is maximum 3 (60 in the case if external power supply unit is used). ZETLAB software enables connection of up to 1024 sensors to a single PC. Measurement networks can be connected to any kind of the system with Modbus protocol, RS-485 interface.

Подключение по Ethernet

Подключение по USB

Configuring

Universal measurement module ZET 7080-I

Configuring of digital sensors is performed by means of the software “Device manager”, placed in “Service” menu of ZETLAB main panel.

"Measurement" tab

Parameter	Possibility of changes	Acceptable values	Description
Sensor’s current measured value (in measuring value)	–	Within the measurement range	The parameter depicts measured channel value fixed by the time of the tab activation
Data rate, Hz	–	–	The parameter is determined by the value set for “Data rate” parameter (“Settings” tab)
Measuring value	–	–	The parameter corresponds to the current measurement value. It is determined by the value set for the parameter “Measuring value” (“Settings” tab)
Name of the sensor	Yes	Any characters sequence (maximum 32)	Randomly assigned
Mininal measuring value	–	–	The box depicts minimal possible value that can be measured by the digital sensor
Maximum measuring value	–	–	The box depicts maximum possible value that can be measured by the digital sensor
Reference value for calculations (dB)	–	–	The parameter depicts reference value necessary for conversion of the measured value into dB (the parameter is not valid for sensors of ZET 7×80-I series)
Sensitivity (in measuring value)	–	–	The parameter depicts sensitivity value
Sensitivity threshold (in measuring value)	–	–	The parameter specifies measuring sensitivity

"Settings" Tab

Parameter	Possibility of changes	Acceptable values	Description
Output signal	Yes	0 – 20 mA 4 – 20 mA 0 – 5 mA	The parameter is set in accrodance with the connected sensors specifications
Sensor serial number	Yes	–	The parameter is set only in the case if it is necessary to identify sensor serial number
Measuring value	Yes	–	The parameter specifies measuring value for the purpose of measurement physical value identification. The value set is not used for any conversions
Minimal measuring value	Yes	–	Lower measuring limit of the external sensor. The value is set in accordance with the connected sensor specifications
Maximum measuring value	Yes	–	Upper measuring limit of the external sensor. The value is set in accordance with the connected sensor specifications
Refresh rate	Yes	1 10 50 100 200 400	Sampling rate
“Rotary encoder” mode	Yes	Off On	Activation of “Encoder” measuring mode

"Encoder" tab

Parameter	Possibility of changes	Acceptable values	Description
Activity status	No	Off On	Depicts current activity status of the “Encoder” mode
Upper threshold limit	Yes	–	The parameter determines upper threshold limit of mark activation
Lower threshold limit	Yes	–	The parameter determines lower threshold limit of mark activation
Number of marks for one rotation	Yes	–	The parameter determines the number of marks for one rotation
Measuring values	Yes	rotation ° radian rotation per s °/s rad/s rotation/s² °/s² rad/s²	Measuring values settings
Set to zero	Yes	Off On	Sets to zero the RPM counter (after the settings are saved the parameter goes back to «off»)

In order to configure the encoder mode it is necessary to enable the digital sensor ZET 7х80-I to measure source data (“raw data”). To do this switch the parameter “Output signal” in the tab “Settings” for the value «0−20 mA». Then set the values for parameters “Minimal measuring value” and “Maximum measuring value” in accordance with the chosen mode («0» and «20»).

It is also necessary to set the response level of the optical mark. Align optical sensor with the mark and set the actual value from the program “DC Voltmeter” in the box “Upper threshold limit” of the “Encoder” tab. Remove the mark and set the actual value from the program “DC Voltmeter” in the box “Lower threshold limit” of the “Encoder” tab. One should understand, that these values have to be checked, since if the value fails to exceed the set threshold, the mark will not be detected. It means that it is better to set the values with minor corrections to guarantee the mark detection. At the same time the value should be above noise and interference level in order to avoid false responses of the sensor.

"Shift" tab

Parameter	Possibility of changes	Acceptable values	Description
Shift state	Yes	Off On	Activation of current measured value recalculation to the value specified in “Shift” parameter
Shift in measuring value	Yes	–	The parameter specifies the value which should be set as a current value of the digital sensor and based on which further value changes shall be controlled.