1/8 DIN size New Digital Panel Meters, LCD Display Type
(Models: 47DV, 47DT, 47DR, 47DM, 47DAC)

Figure 1. 47 Series External Appearance and Dimensions (LCD Display Type )

Model Input type 47DV DC input 47DT Thermocouple input 47DR RTD input 47DM Potentiometer input 47DAC AC input Table 1. 47 Series LCD Display Type Product Line

The easy-to-use 47 series retains our noted performance and functionality in a new stylish design.
The 47 Series lets you choose from LED display type models and LCD display type models. Both display types offer the following features:

• Vertically staggered terminal blocks for easy wiring.
• Detachable two-piece terminal blocks for convenient maintenance.
• Standard 48 x 96 panel cutout size allowing 47 Series models to be used as replacements for other meters.
• IP66 protection front panel.
• One-touch panel attachment — No need for tools!

LCD display type models augment the above features with an additional range of functionality.
Table 1 Outlines the LCD display type models (input types) of the 47 Series.

1. Display

(1) Main display Indicates present values, setting values. (2) Sub display Indicates the present setting mode. (3) Status indicators Indicate Max/Min display mode, Forced zero mode, and Tare adjustment mode. (4) Alarm indicators Indicate alarm status of the input signal. (5) Bargraph Indicates present signal level against the scaled range. (6) Function indicators Indicate setting modes and status. (7) Infrared interface Used for the infrared communication. (8) Max/Min button Used to switch the main display to show present values, maximum values or minimum values. (9) Alarm/ Button Used to move on to the alarm setting mode; or to shift through setting items in each setting mode. (10) Scale/ Button Used to move on to the scaling setting mode; or to shift through setting items in each setting mode. (11) Shift button Used to move on to the setting standby status and shift through display digits in each setting item. (12) Up button Used to change setting values, to execute/cancel Forced Zero, or to set input signal values during ‘Teach’ calibration. Figure 2. 47 Series Front Panel (LCD Display Type, 47DV) Note: Refer to the operating manual for details on each function.

Figure 1 Illustrates the external appearance of 47 Series LCD display type models, while Figure 2 provides a diagram of the front panel.

The 47D models features an LCD display, which enables it to provide more detailed information without increasing power consumption compared to LED type models. Taking advantage of this feature, this model offers a bar graph that covers the full display range able to be seen at a single glance. They use a high-brightness LED backlight and support switching of display colors, allowing alarms to be indicated by changes of the display color.

The main display readout switches from green to red when the unit enters an alarm state (it can also be configured to change from red to green). This feature is designed to inform the state of the device from a reasonable distance based on changes in the display color.

2. Operability

The 47D models are designed to fulfill the seemingly contradictory demands of intuitive operation and extensive functionality. The goal of the design process was to allow users to understand basic operations and use after reading through the instruction manual one time.

The features most frequently used initially after powering on the meter are likely to be the alarm setting function and the scaling function. Each of these functions have been assigned to a single button located on the front panel and labeled with the name of the function to allow instant access to setting mode.

There is also a security function to prevent unintended setting changes. Models take advantage of the detailed display made possible by the use of an (11) Shift buttonLCD as described above to offer the maximum possible level of functionality while delivering intuitive operation. Table 2 lists a selection of representative functions.

Figure 3. Configuration with the Infrared Communication Adaptor

LCD display type 47 Series models support an infrared communication adaptor (model: COP-IRU). The adaptor can be used to configure the device from a computer without requiring either a cable connection or access to the unit’s front panel (see Figure 3).

PC configurator software (model: 47DCFG) is also available for use with the adaptor. The software can be downloaded from our website.

Used in combination with the PC configurator software, this infrared communication adaptor eliminates the need to check various settings while repeatedly pressing the buttons on the unit’s front panel. Instead, you can set and check settings on a large computer screen.

Additionally, the ability to edit, save, and load equipment parameters and manage parameter files eliminates the fuss when using control panels equipped with multiple 47 Series digital panel meters as long as the meters use the same settings. You need only load the parameter file and write (send) it to each unit.

4. DC Output and Modbus Communications

Figure 4. System Configuration Example Using Modbus Communications

DC output has five calibration types available (4 to 20 mA, 0 to 20 mA, 0 to 5 V, ±5 V, and ±10 V) using the buttons on the unit’s front panel to configure without changing terminal block connections. The withstand voltage between inputs and DC outputs is AC 2,000 V for 1 minute. Furthermore, the 47 Series meters offer a loop test function for which output can be set to the desired value, a convenient feature when getting a system up and running.

47 Series also offer RS-485 Modbus communications, allowing them to send measured values or setting values to an upstream computer or other device making it easy to implement data gathering and analysis from multiple meters. Additionally, the full range of meter functionality is supported, including the changing of alarm values and display colors. Figure 4 illustrates an example system architecture.

5. Excitation Supply

The 47 Series includes an excitation supply. Users can choose from two-wire transmitter excitation (+24 V) and sensor excitation (+12 V) at the time of purchase (except for 47DAC).

With two-wire transmitter excitation models, you can monitor and display 20 mA transmitter output just by connecting a DC input type meter (47DV) to a two-wire transmitter with two wires. Smart transmitters (e.g., with HART) are also supported.

Additionally, units with either type of excitation supply now display an error on the front panel when an unexpected shortcircuit occurs. Naturally, a shortcircuit protection function is included.