ABB NDSM04 Digital Slave Module

ABB NDSM04 Digital Slave Module

Basic Information

Place of Origin and Appearance: Originally from Sweden, dimensions approx. 12.7cm x 5.1cm x 12.7cm, weight approx. 0.1kg.

Installation: DIN rail mounted, easy to install, can be easily mounted on a standard DIN rail, saving installation space and facilitating system expansion and maintenance.

Functional features

Signal Transmission and Conversion: The module is mainly used to transmit the sixteen independent digital signals output from Infi 90 process management system to the main module of the process, which plays the role of signal transit and expansion, and enables the main module to control multiple on-site devices more conveniently.

Fault diagnosis and indication: with fault diagnosis function, it can monitor its own working status and communication status with the main module and field equipment in real time, such as communication failure, power failure, etc., the module will send alarm signals to the control system through the corresponding indicator or communication interface, which is convenient for maintenance personnel to find and deal with faults in time.

Electrical isolation: electrical isolation technology is adopted between the input and output channels and internal circuits, with high isolation voltage, which can effectively prevent external interference and protect the internal circuits, and improve the stability and reliability of the system.

Technical Parameters

Power Requirements: Normally 24V/28V DC, 1A power supply, power connector is Phoenix Contact (MC 1.5/S-S-STF-3.81).

Operating temperature range: - 40 to 70°C (-40 to 158°F), storage temperature range - 40 to 85°C (-40 to 185°F), able to adapt to the more severe industrial field environment.

Application Areas

Industrial automation control system: In the production process automation control system of chemical, petroleum, natural gas and other industries, it can be used as the relay and expansion module of digital signals to realize centralized control and management of a large number of on-site equipment.

Power system automation: in the automation control system of power plants, substations and other places, it can accurately transmit the commands of the control system to each on-site equipment to ensure the safe and stable operation of the power system.

Intelligent building field: It can be used to connect various intelligent equipments in buildings, such as lighting system, air-conditioning system, elevator system, etc., to realize centralized monitoring and intelligent management of building equipments.

Main features

· 24 digital inputs with LED displays 

· 16 digital transistor outputs with LED displays 

· 8 digital inputs/outputs with LED displays 

· 8 individually configurable analog inputs 0...10 V, 0...5 V, ±10 V, ±5 V, 0...20 mA, 4...20 mA, differential inputs, Pt100 (2-wire or 3-wire), the analog inputs are also individually configurable as digital inputs 

· 4 individually configurable analog outputs ±10 V, 0...20 mA, 4...20 mA 

· 2 counters for counting frequencies up to 50 kHz, configurable in 7 different operating modes · 1 CS31 system bus interface for system expansion 

· 1 interface for connecting communication modules (e.g. 07 KP 90) 

· 2 serial interfaces COM1, COM2 

– as MODBUS interfaces and 

– for programming and test functions 

· Real-time clock 

· LEDs for displaying operating conditions and error messages 

· Detachable screw-type terminal blocks 

· Fastening by screws or by snapping the device onto a DIN rail 

· The lithium battery 07 LE 90 can be put into the battery compartment in order to 

– store and backup the user program in the RAM 

– store and backup data which is additionally contained in the RAM, e.g. the status of flags 

– backup the time and date (real-time clock) 

· RUN/STOP switch for starting and aborting the program execution