Fault Indicator System

NEMS

New value/first value messsage
16 alarm inputs open-circuit current/closed current
Isolated inputs and power supply Line voltage 24V DC or 230V AC
Relay outputs for collective fault and Watchdog circuit
Fault / operation messages
Safety interlock circuits for direct connected wiring
To connect to an alarm system with max. 1024 alarm inputs via LSB
Display- and operation terminal for visualization and history function via LSB
2nd RS232 interface for connecting a radio clock
RS232 interface (optional) for connecting a PC with configuration software

Power supply	24 VDC or 230 VAC
Communication interfaces	RS 232 (optional) LAMTEC SYSTEM BUS PROFIBUS DP (optional)
Relais outputs	2 Relais with floating contacts, freely programmable
Indicator function resolution	1 … 127 ms, (100 ms NEMS230)
Housing	Black sheet steel, size 72 x 144 x 200 mm for instruments panel mounting Panel cut-out, size 138 x 68 mm Total weight ca. 1,1 kg Protection class IP40 at the front (optional IP54)
Contactor voltage	24 VDC or 230 VAC

The NEMS is a new value/first value and process indicator system consisting of individual NEMS16 devices, each with 16 indicator inputs. By networking via a LAMTEC system bus, it is possible to create an indicator system with a maximum of 1024 signals (64 individual devices). Each indicator input (DC18-30V) can be converted to fault or process status signal as well as normal open or closed contacts and is displayed by means of a luminous, three-colour LED on the front panel.

When an indicator input is switched to the active state, the relevant LED changes over to a flashing light or a continuous light.

It is also possible to print out the signals in chronological order via a serial logging printer or a display and operating terminal connected at the LAMTEC SYSTEM BUS.

The device contains a real-time clock, which is synchronised with another NEMS16 in the system.

Applications

Process monitoring
Monitoring of safety interlock chains in combustion engineering
Chronological recording and processing of fault values and operating data
Coupling to standard field bus systems (e.g. Profibus) is possible as an option
Logging and further processing in conjunction with higher-level computer systems
Decentralised recording of locally distributed signals

Type	Accessory
Panel installation	Radio clock
Design as 19″-rack	Field bus link
NEMS 230 Design as 19″-rack	Printer
NEMS with contactor voltage 230V/AC	Digital output module
	External horn
	Message text and configuration software

Combustion&Control

NEMS