Isolated RTD Converter DAT2061 with DIP Switch programmability.
GENERAL DESCRIPTION
The RTD Pt100 Converter DAT2061 is a Din Rail mount isolated temperature Converter with DIP Switch programmability.
The DAT2061 is accurate to 0.1% full scale and has less than 0.02%/'f thermal drift.
It is possible to set the minimum and maximum values of the input and output ranges in any point of the scale, keeping the minimum span shown in the table below.
It is possible to connect on the input both 3 wires and 2 wires Pt100.
The DAT2061 is isolated between the power supply and the input/output to 2000V and eliminates the effects of any ground loops and allows the use of the transmitter in heavy environmental conditions found in industrial applications.
The DAT2061 is in compliance with the standard 89/336/CEE on the Electromagnetic Compatibility.
The DAT2061 is housed in a plastic enclosure of 12.5 mm thickness suitable for DIN rail mounting in compliance with EN-50022 and EN-50035 standards.
The calibration of zero and span values is made by the ZERO and SPAN potentiometers located on the top of device.
USER INSTRUCTIONS
The RTD converter DAT2061 must be powered by a direct voltage included in the 18 V to 30 V range. The power supply must be applied between the terminals R (+Vdc) and Q (GND).
The output connections must be made as shown in the section "Output connections".
The current or voltage output signal is measurable between the terminals N (OUT) and M (GND1).
The input connections must be made as shown in the section "Input connections".
The 3 wires Pt100 must be connected between the terminals G (Pt2) and I (Pt1), while the third wire must be connected to the terminal E (Pt3) or alternatively between the terminals H (Pt2) and L (Pt1), while the third wire must be connected to the terminal F (Pt3).
The 2 wires Pt100 must be connected between the terminals G (Pt2) and I (Pt1), making a short circuit between the terminals G (Pt2) and E (Pt3) or alternatively between the terminals H (Pt2) and L (Pt1), making a short circuit between the terminals H (Pt2) and F (Pt3) .
The configuration of input and output ranges values is made by DIP-switches (refer to the section “Input range tables” and “Output range table”).
After the converter configuration, it is necessary to calibrate it using the ZERO and SPAN regulations; this operation is illustrated in the section “DAT2061: Configuration and calibration”.
To install the device refer to the section “Installation instructions”.
TECHNICAL SPECIFICATIONS
INSTALLATION INSTRUCTIONS
The DAT2061 device is suitable for fitting to DIN rails in the vertical position. For optimum operation and long life follow these instructions:
When the devices are installed side by side it is necessary to separate them by at least 5 mm if the panel temperature exceeds 35°C and the device is powered by an high supply voltage( >27Vdc) Make sure that sufficient air flow is provided for the device avoiding to place raceways or other objects which could obstruct the ventilation slits.
Moreover it is suggested to avoid that devices are mounted above appliances generating heat; their ideal place should be in the lower part of the panel. Install the device in a place without vibrations.
Moreover it is suggested to avoid routing conductors near power signal cables (motors, induction ovens, inverters, etc...) and to use shielded cable for connecting signals.
DIMENSIONS (mm)
CONFIGURATION
1) Calculate the difference between the maximum and the minimum value of the input range (Span).
2) Refer to the “ Input ranges table " and determine in the column " SPAN" the position where the calculated value is included, then referring to the position obtained determine in the column “ZERO”, the line in which the minimum value is included . In the correspondent line is shown as to set the DIP-switches .
3) Set the DIP-switches as indicated .
4) Connect on input a 3 wire Pt100 simulator programmed to supply the maximum and minimum values of the input range or a fixed resistor of the same values.
5) Set the simulator at the minimum temperature or to connect a fixed resistor correspondent to the minimum value .
6) By the ZERO potentiometer calibrate the output at the 4 mA value .
7) Set the simulator at the maximum temperature or to connect a fixed resistor correspondent to the maximum value .
8) By the SPAN potentiometer calibrate the output at the 20 mA value .
9) Repeat the operation from the step 5 to the step 8 until the output value will be correct ( 3 attempts typically required).
Configuration ex. : -50/250 °C out 0÷10 Vdc
Span => 300°C;
Input switches configuration (DSI ): Off, Off, Off, On.
Output switches configuration (DSO ): Off, On, Off, On, Off.
CONNECTIONS
LOAD CHARACTERISTIC
ISOLATION STRUCTURE
