Answer / asif.k64@hotmail.com

Modules work as a mediator between the fire alarm panels and
output devices like, smoke detector or MCP(manual call
point) actuators etc.
Control Module(CM)# Device Interface module
This Is an interface Module for automatic Switching or
Programmed outputs.

MONITOR Module(MM)# monitor module is an interface between a
control panel and normally open contact devices
MONITOR Module DUAL (MM2)# It is used for two wire
addressable devices, it can also monitor No contacts and
supervisory devices.

Signal Module(SM)#Signal modules (SM) to connect sensors and
actuators (Output devices) are the interfaces of the system
to the process. Digital signal modules acquire the binary
control signals to and from the process level.

Isolator Module(IM)# To protect the system against short
circuits, should be placed between each device on the
SLC (Signaling Line Circuit) loop to isolate a short-circuit
problem

generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

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