IS-NT-Async-SPI, SW Version 1.2,   ©ComAp – February 2011                                
IS-NT-Async-SPI-1.2.PDF 
 
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General description 
Description of the controller system (with all options)  
NT Family controllers are comprehensive AMF-controllers for single and multiple generating sets operating 
in stand-by or parallel modes.  A modular construction allow upgrades to different levels of complexity in 
order to provide the best solution for various customer applications.  
NT Family controllers are equipped with a powerful graphic display showing icons, symbols and bar-graphs 
for intuitive operation, which sets, together with high functionality, new standards in Gen-set controls. 
The controller automatically starts the gen-set, closes the Gen-set C.B. when all conditions are met, then 
stops the engine on external signal or by pressing push buttons. 
Parallel to the Mains operation is a standard feature. Isolated parallel and Power Management System 
support are optional. Forward and reverse synchronizing, Generator protections, Mains protection including 
vector shift, load and power factor control are the major functions provided. Interfacing to foreign 
synchronizers and load sharers is supported. 
The key feature of the controller is its easy-to-use operation and installation. Predefined configurations for 
typical applications are available as well as user-defined configurations for special applications. 
 
Available related documentation 
 
 
PDF files  Description 
IGS-NT-2.4-Application guide.pdf  Application guide for IG/IS-NT 
IGS-NT-2.5-Installation guide.pdf  Installation guide for IG/IS-NT 
IGS-NT-2.0-Operator guide.pdf  Operator guide for IG/IS-NT 
IGS-NT-BB Communication Guide 01-2011  Communications guide for IG/IS-NT(C)-BB controllers 
IG/IS-NT Communication Guide 12-2009  Communication guide for IG/IS-NT controllers