DGH D6400 Analog Current Input Module

The D6400 7-channel analog input module is part of the DGH’s D6000 data acquisition module family. This input module combines all the features of modules D6100, D6200 and D6300, as it measures signals from six different voltage ranges, a current range, and eight different thermocouple types (J, K, T, E, R, S, B and C). It continuously converts the data at the rate of up to 25 conversions per second, storing the latest result in the buffer. The data (unsigned integer percentage of full-scale values) can then be retrieved by sending a Modbus query to the module from the host processor. The D6400 input module can be directly connected to a wide range of sensors and annunciators, and provides all signal conditioning and linearisation, while containing no pots or DIP switches. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D6400 module is compatible with any commercial software supporting Modbus RTU protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D6000 modules, it provides the complete, customised data acquisition system for given application.

• 7-channel differential Volt, Current and Thermocouple input module
• Specification equal to modules D6100, D6200 and D6300
• Voltage ranges: ±25mV, ±50mV, ±100mV, ±1V, ±5V, ±10V
• Current range: ±20mA
• Thermocouple types J, K, T, E, R, S, B and C
• Modbus RTU protocol
• RS-485 serial communication interface
• User-selectable features include input type and analog input range per channel, baud rate, parity type, digital filtering and others
• 16-bit ADC, 25/20 conversions per second (total across the enabled channels)
• Compatible with all commercial software programs supporting Modbus RTU protocol, including programs from Wonderware, DreamReport, National Instruments Labview, Indusoft and others
• Accuracy: ±0.05% of FS maximum (voltage and current measuring), ±1.5°C maximum for thermocouple types J, K, T and E and ±3.5°C maximum (300°C to +FS) for types R, S, B and C
• Open thermocouple and over range indication
• Input burnout protection to 250Vac
• Input impedance: 20MΩ minimum for voltage and thermocouple measuring, <100Ω for current measuring
• Power requirements: Serial = 1.4W
• Temperature range -25°C to +70°C
• Mix and match with other D6000 modules to build a complete, customised data acquisition system

The applications for the D6000 data acquisition modules include:

• Process monitoring and control
• Remote data logging to any host computer
• Product testing
• Direct connection to PLC