Weight Transmitter WTB

Version: WTB 485

Digital measuring amplifier with analog output WTB ➥ EC type approval for up to 10,000 calibration values ✔ High measuring rate up to 300 measurements per second ✔

Free shipping within Germany
Professional weighing technology
Original BOSCHE quality

€198.00*

Available, delivery time: 1-3 days

Version

Product number: 660-100-20-07

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For applications that require calibration please order the calibration as an accessory here. Subsequent calibration is not possible!

Type	Product number	Version	Unit price	Buy

Product information "Weight Transmitter WTB"

The WTB is a highly accurate digital scale transmitter with 24-bit AD converter, which converts the output signals of the connected load cells in a stable weight value. This versatile and extremely reliable weight transmitter shows fast and accurate weight values. The transmitter has both analog and digital outputs that provide stable measurement information. Communication is done via an RS485 interface. Programmable relay outputs and two digital logic inputs are also available as standard.The optional analog output provides propotional to the weight an analog signal that can be processed by a PLC or PC.

This weighing transmitter, with the industry standards of bus technology, enables monitoring of various production processes and is a cost-effective alternative to comparable electronics from PLC manufacturers.

Optional: Modbus RTU, Modbus TCP, PROFIBUS DP, PROFINET IO, Ethernet IP, Ethernet TCP/IP, EtherCAT, DeviceNet, CANopen, POWERLINK, CC-Link, IO Link, Sercos III.

profibus_rgb profinet_rgb lum-devicenet

Characteristics of the weighing transmitter

Measurement amplifier with analog output for strain gauges full bridges
EC type approval for max. number of calibration values: n = 10,000
Various bus systems
Space-saving top-hat rail installation
Wide input voltage range: 12 - 24V DC +/- 10%, +/- 10%, 5W
Number of parallel load cells: max. 8 (at 350 ohms)
High measuring rate of the transmitter up to 300 measurements / sec.
1 channel A/D converter: 24 bit
Six-digit display with red 7-segment LEDs
Maximum number of decimal places: 4
Programmable switching contacts
3 programmable potential-free outputs: max. 115V AC / 150mA for controlling relays
Two digital, optically isolated inputs
RS-485 serial interface, up to 32 can be connected in the bus
Theoretical calibration (via keyboard) and real calibration with weights with up to 5 points of linearization
All connections via screw terminals

Option

Selectable analogue output for current or voltage, optically isolated, 16 bit
(selectable 0-20mA, 4-20mA, 0-10V, 0-5V, ± 10V, ±5V)
Profibus DP, ProfiNet, Ethernet/ModbusTCP

Construction

The WTB transmitter has a 6-digit weight and service display. The weight value can be controlled locally by the well-read, bright LED display. The four buttons are behind a hinged acrylic glass plate on the front. The scale transmitter is designed for installation on a standard DIN rail. The narrow design allows the installation of multiple devices next to each other. Both 4 - and 6-wire load cells can be connected. The peak value function (PEAK) can be linked with a switch point output of a serial interface, analog output, or display.

Weighing technology - Legal for trade

The scale transmitter of the WTB series are legal for trade according to OIML verification class III and IIII. The weighing function is authorized up to 10,000 components. The calibration and function setting is made easy via the keypad. A theoretical calibration - without weights - only by entering the weighing range and the nominal characteristic value of the load cell (mV / V) is also possible.

Interfaces

The variety of available interfaces enables easy and secure integration of weighing systems into any automation system.

Variants

WTB 485	WTB analog	WTB Profibus

		GSD profibus file
Serial interface RS-485, connect up to 32 on the bus	Serial interface RS-485 Analog output, optically isolated selectable: 0-20mA / 4-20mA (max 300ohm) / 0-10V / ±10V / ±5V (min 10kohm)	Serial interface RS-485 Slave Profibus DP (max 126 devices with repeater), Baud rate: up to 12 Mbit/s

WTB Profinet 2	WTB Ethernet 2	WTB Ethernet TCP/IP


XML Profinet - 2 Port - file	EDS EthernetIP configuration file
Serial interface RS-485 2 x Profinet IO; RJ45 10Base-T (10Mbps) or 100Base-TX (100Mbps)	Serial interface RS-485 2 x Ethernet/IP; RJ45 10Base-T (10Mbps) or 100Base-TX (100Mbps)	Serial interface RS-485 Ethernet TCP/IP slave via web browser; RJ45 10Base-T (10Mbps) or 100Base-TX (100Mbps)

WTB EtherCAT 2	WTB Modbus	WTB CANopen

ESI EtherCAT configuration file		EDS CANopen configuration file
Serial interface RS-485 2 x Slave EtherCAT port, RJ45 10Base-T (10Mbps) or 100Base-TX (100Mbps)	Serial interface RS-485 Modbus/TCP; RJ45 10Base-T (10Mbps) or 100Base-TX (100Mbps)	Serial interface RS-485 Slave CANopen port, max 99 devices, Baud rate: 10, 20, 25, 50, 100, 125, 250, 500, 800, 1000 kbit/s

WTB POWERLINK 2	WTB CC-Link	WTB Sercos 2

	CSP CC-Link configuration file
Serial interface RS-485 2 x Slave POWERLINK port, RJ45 10Base-T (10Mbps) or 100Base-TX (100Mbps)	Serial interface RS-485 Slave CC-Link port, max 64 devices, Baud rate: 156, 625, 2.500, 5.000, 10.000 kbit/s	Serial interface RS-485 2 x Slave SERCOS III port; RJ45 10Base-T (10Mbps) or 100Base-TX (100Mbps)

Technical data

A/D converter	24 bit (16,000,000 parts) - 4.8 kHz
Load cell supply	5 V DC / 120 mA
Power supply / performance	12 ÷ 24 V DC ± 10% / 5 W
Supply voltage of the inputs	5- 24 VDC
Max. Counter steps (with measuring range +/-10mV = Rec. 2mV/V)	± 999999 • 0,01 µV/D
Linearity	< 0,01% of range
Temperature drift (of the analogue output)	0,003 % of range / °C
Number of load cells (connected in parallel)	Max. 8 á 350 Ω or 16 á 700 Ω (4- or 6-wire technology)
Measuring range	± 39 mV
Max. Sensitivity of the load cells	± 7 mV
Max. Conversions per second	300 conversions/s.
Display	6 digits, 7 segments, LED red + 6 status LEDs
Decimal places	0-4
Resolution display - adjustable increments	x 1 x 2 x 5 x 10 x 20 x 50 x 100
Keyboard	Keypad with 4 keys to control the weighing functions
Status symbols	Zero, tare, memory status
Measuring range	-1mv ~ +14 mv
Digital filter	10 levels
Conversion rate	5 - 300 Hz
2 x digital optically isolated inputs	2-5 ÷ 24 V DC PNP
1 x analogue output; optically isolated, 16 bit	0-20 mA / 4-20 mA and max. 300 Ω 0-10 V DC / 0-5 V DC and min.10 kΩ
3 x logical relay outputs	max. 115 VAC / 150 mA
Serial interface	1 x RS485
Baud rate	2.400, 4.800, 9.600, 19.200, 38.400, 115.200 (bit/s)
Nominal temperature range	- 10 ... + 40 °C
Humidity	max. 85% r.H., non-condensing
Dimension (W x D x H)	120 x 115 x 25 mm