INSTALLATION AND OPERATING INSTRUCTIONS
Site cabling considerations
SKF Multilog On-line System IMx-8/IMx-8Plus
User Manual
Revision E
2.4 Site cabling considerations
When routing cabling to the IMx or the protective cabinet:
• Route and secure them at regular intervals, to minimise cable vibration
• Keep clear of high voltage equipment, their cables or strong magnetic fields
• Avoid exposure to or protect against radiant heat
• Choose a cable routing, that doesn’t obstruct access to the IMx
• Avoid cable and sensor locations that interfere with routine maintenance
For cable/wire ends, bootlace ferrules or cord end terminals are recommended. The
wire end should have a maximum cross section/gauge of 1.5 mm² / 16 AWG and an
insertion length of approximately 10 mm.
Important safety warnings and guidance:
2.4.1 Sensor cabling
An IMx-8/IMx-8Plus can connect to the following sensor types:
• Accelerometers, 2-wire, constant current
• Voltage output sensors, 2-wire, including externally powered accelerometers
• 4-20 mA outputs, 2-wire, load resistor must be fitted at IMx input terminals
• Speed sensors, 2- or 3-wire
If not otherwise specified, by a sensor supplier or similar, signal wiring to the IMx
should use shielded, twisted pair 2 x 0.5 mm
2
(FKAR-PG 1 x 2 x 0.50 DUE 4002 or
equivalent), with minimum voltage requirement of 300 V.
Only remove any cabinet blind plugs where it is necessary to accommodate
a cable, an appropriate cable gland must then be used. Any unused cable entries
must remain closed off.
Refer also to the instruction manual: ‘Attaching Sensors for SKF Multilog
On-Line Systems’. This provides examples of monitoring scenarios (typical
number and location of sensors) as well as important guidance regarding the
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