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Hardware
Hardware Configuration
SKF Multilog On-Line System IMx-M
4 - 13
User Manual
The total sensor power output of each CMM + PRM slot shall not
exceed 15 W (total sensor power output of 16 analog channels and
8 digital channels).
For more information see DIP switch settings in
Condition Monitoring Part Electrical Interface
Important - All wires and cables connected to input and output terminals shall
have a flammability rating VW-1, FT-1 or fulfill the requirements according to IEC
60332-1-2 or IEC 60332-2-2.
Communication Cable
For a length of up to 15 meters, it is recommended to use a pre-fabricated Ethernet
cable FTP type, CAT5/6. For a longer cable length, use S-FTP Ethernet cable CAT5/6.
Note that a CAT5/6 twisted pair (TP) Ethernet cable has maximum working distance of
100 m. If longer cable lengths are needed, fibre optic cables may be used along with
needed converters such as converters for fibre optic to CAT5 Ethernet and vice versa.
Data Communication
An IMx-M rack communications are compliant with the Ethernet standard 10/100 Mbit.
Each CMM + PRM pair has two Ethernet ports which work like an internal switch.
Ethernet Cable
The Ethernet TP cable on the back of each CMM + PRM slot is connected at one of the
standard Ethernet RJ45 connections, named ETH1 and ETH2. Both Ethernet ports
have auto detection of crossover or straight through Ethernet cable connection.
Basically, each CMM + PRM slot has a 2-port built-in Ethernet switch. Refer to
section for the view of the terminals.
Table 4-1: IMx-M Ethernet connections
ETH1
RJ45 Ethernet 1
ETH2
RJ45 Ethernet 2
It is possible to connect a CMM + PRM slot in a daisy chain. The number of CMM + PRM
slots that can be connected in a single cable layout can be varied. However, it is
recommended no more than 8 CMM + PRM slots in a single cable layout in order to
minimize the loss of sensitivity.
For the behaviors and their corresponding descriptions of Ethernet LEDs, refer to
Condition Monitoring Module (CMM)
Hardware Configuration
When referring to DIP switch settings 0 means "Off" and 1 means ON.