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INSTALLATION AND OPERATING INSTRUCTIONS
Troubleshooting

SKF Multilog On-line System IMx-8/IMx-8Plus
User Manual
Revision E

43 (63)

NO: Disconnect the relay wiring at the IMx and recheck the voltage,
across those terminals.

b. Is the measured voltage now as expected, approximately 24 V DC?

YES: Double check that the relay is compatible with the IMx,
especially that the relay current requirement is within its capability.

Otherwise, a relay or cable fault is indicated.

NO: Check again that the correct relay output is being tested and that
the configuration is correct. If so, the test suggests a fault in the IMx
device, contact TSG for further advice.

3. Disconnect the relay output wiring and using a DMM, measure resistance

across the relay output terminals. Observe the reading and disconnect either
of the connections to the relay coil. Has the reading changed, from an open
to a low resistance or vice versa?

NO: A relay fault is indicated.

YES: The IMx and relay sub-system seems as expected. Check the
downstream system components: that the correct relay output contacts are

being used, the power supply on the relay contact side, the ‘detecting’ device

,

etc.

4. Measure the DC voltage at the relay coil terminals, using a digital voltmeter.

Is it approximately 24 V DC?

YES: Check again that the correct relay output is being tested and
that the configuration is correct. Check also that this relay is wired to
the correct IMx, relay driver output.

If so, the test suggests a fault in the IMx device, contact TSG for
further advice.

NO: The IMx relay driver output seems as expected.

Check the downstream system components: that the correct relay
output contacts are being used, the power supply on the relay contact
sid

e, the ‘detecting’ device

, etc.

2.9.5 RS485 Modbus RTU communications

Communications can be affected either by physical, typically wiring, issues for the
RS485 bus and/or configuration issues related to the Modbus RTU protocol.

Physically these are, differential, 2-wire interfaces with the two wires marked as A

and B. Whilst it is normal to connect ‘A to A’ and ‘B to B’ it is not

unheard of, to have

inconsistent marking on different manufacturer’s equipment.

So, when interfacing to

‘new’ equipment and experiencing problems it is worthwhile to test with the

connections swapped, as no damage will be done by operating with swapped RS485
connections. Bear in mind if there are multiple issues, say a configuration problem
and an incorrect connection, all issues will have to be solved before a

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Содержание IMx-16

Страница 1: ...System IMx 8 IMx 8Plus User Manual Part Number 15V 090 00049 100 Revision E September 2020 Read this manual carefully before using the product Failure to follow the instructions and safety precautions in this manual can result in serious injury damage to the product or incorrect readings Keep this manual in a safe location for future reference ...

Страница 2: ......

Страница 3: ...f of ownership and staying informed about upgrades and special offers Please visit our website for more details on these benefits General Product Information General information such as datasheets and catalogues are published on the Condition Monitoring Systems site on SKF com Supporting product information can also be downloaded from the SKF Technical Support self service web portal Product Suppo...

Страница 4: ...s already published You may search the vast knowledge base within the self service web portal for answers to commonly asked questions FAQ how to articles technical specs installation and user manuals best practices and more Customers in Europe Middle East and Africa Phone 46 0 31 337 6500 E Mail TSG EMEA skf com Chat www skf com cm tsg Customers in the Americas Asia and all other locations Phone 1...

Страница 5: ...S module optional 14 2 Installation and operating instructions 15 2 1 Introduction 15 2 2 Mounting the IMx 8 IMx 8Plus 16 2 3 Power requirements 18 2 4 Site cabling considerations 20 2 4 1 Sensor cabling 20 2 4 2 Ethernet cabling 21 2 4 3 RS485 Modbus cabling 21 2 5 SKF Multilog On line System IMx 8 IMx 8Plus 21 2 5 1 Introduction 21 2 5 2 Network configuration 21 2 5 3 Ethernet connection 22 2 5 ...

Страница 6: ...g 36 2 9 1 Introduction 36 2 9 2 Rescue Button 36 2 9 3 Sensor circuits 37 2 9 4 Relay driver outputs 42 2 9 5 RS485 Modbus RTU communications 43 2 9 6 Connections to Monitor 44 3 Product specifications 45 3 1 Product labelling 45 3 2 SKF Multilog On line System IMx 8 IMx 8Plus 46 3 2 1 Environmental 46 3 2 2 Power 46 3 2 3 Analogue inputs 46 3 2 4 Digital inputs 47 3 2 5 Digital outputs 47 3 2 6 ...

Страница 7: ...bottom end cap 53 3 3 3 IMx 8Plus top end cap 54 3 3 4 IMx 8Plus bottom end cap 55 3 4 Enclosure and cabinet mechanical drawings 56 3 4 1 IMx 8 IMx 8Plus enclosure 56 3 4 2 IMx 8 IMx 8Plus IP65 cabinets optional 56 3 5 HMI display optional 58 3 6 Mobile data Wi Fi antenna optional 59 3 7 GPS module optional 60 4 Electrical waste 61 Appendix A Limited Warranty 63 ...

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Страница 9: ...ate to network infrastructure supported on device and are listed in the table below Table 1 Feature comparison IMx 8 and IMx 8Plus Feature IMx 8 IMx 8Plus Mobile data connection Yes Wi Fi Yes Ethernet RJ45 Yes Yes Simplified overviews of IMx 8 and IMx 8Plus systems are shown in Figures 1 and 2 below details of the specific features and capabilities follow Note that in practice ptitude Observer sof...

Страница 10: ... IMx 8Plus to wider networks and cannot be used simultaneously Each IMx is supplied with demountable terminals for digital I O RS485 analogue sensor wiring etc as well as type specific connectors for some of the interfaces and where applicable antenna connections If required the RS485 link can interface by Modbus RTU to an external optional GPS module A Bluetooth dongle provides a convenient means...

Страница 11: ... initiated requires a server installed on a local network with RJ45 or if applicable Wi Fi connection 2 Mobile data connectivity whether implemented within the IMx 8Plus or external to an IMx 8 is only supported in Client Server mode device initiated communications The choice between using a mobile data connection or a LAN connection RJ45 or Wi Fi is part of the IMx 8Plus configuration 1 3 1 Mobil...

Страница 12: ...P Master RTU Master TCP Slave Supported Supported RTU Slave Supported Not supported TCP Slave RTU Slave Supported Not supported Notes The IMx can be a slave in multiple TCP IP connections subject to the following limitations A maximum of 4 Modbus connections master slave TCP IP and RTU in total o If the IMx is a Modbus RTU slave on a bus with other slaves this only counts as one connection towards...

Страница 13: ...siderations for IMx Devices 1 4 Outer cabinet optional Where the IMx 8 is not located in an existing cabinet outer cabinets are available 3 4 2 to house it and any supporting electronics provide cable gland areas for sensor antenna the GPS and other cables The glands used with these enclosures should be chosen to maintain the cabinet IP rating and be appropriate for the application and environment...

Страница 14: ...offer an optional external antenna that supports both Wi Fi and mobile data connectivity noting that the mobile data and Wi Fi interfaces cannot be used simultaneously The antenna is designed to be mounted externally on the cabinet and connects to both LTE connections and the Wi Fi connection See section 3 6 1 6 GPS module optional An optional GPS module is available see section 3 7 This has an in...

Страница 15: ...on requirements of each interface for example IP addresses and subnet mask for LAN connections or intended Modbus RTU mode slave or master Amongst other things consider the lengths of all cables their routing where electrical power for the unit can be sourced and any interfaces to the plant systems Good and thorough planning is the basis for a successful installation and system implementation Impo...

Страница 16: ...ze and weight That will accommodate all the required fixing points The IMx 8 IMx 8Plus have a blue painted aluminium enclosure that is IP30 classified To provide higher environmental protection they should be mounted inside a cabinet an IP65 classified cabinet can be provided by SKF When using any outer cabinet always use all the recommended fixings to mount and secure it For the SKF IP65 classifi...

Страница 17: ... are at the same potential as the immediate IMx casing This is isolated from the DIN mounting rail by the insulating mounting bracket and a green yellow case earth lead is provided to enable a single deliberate connection to an instrument quality ground In Figure 3 this can be seen terminating at the cabinet earth rail which should itself be isolated from the outer enclosure and connected only to ...

Страница 18: ...nts The SKF Multilog IMx 8 IMx 8Plus are designed to be powered from a 22 to 50 V DC supply typical power consumption 10 W or lower The supply to the device should be fused at 2 A slow blow refer 3 2 2 The incoming DC supply is isolated from GND chassis Refer also to the important safety warnings on the following page SKF can supply a DIN rail mounting power supply under part number reference CMON...

Страница 19: ...upply scheme should also incorporate suitable fusing or circuit breakers To prevent a hazardous event power cable return and positive wires must be secured together with a cable tie for example a nylon cable tie CV 100K close to the power connections at the IMx Figure 5 Example of securing positive and return wires with a cable tie To connect the IMx to the DC power supply use cable of the followi...

Страница 20: ...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...

Страница 21: ...view of the capabilities of the IMx 8 and IMx 8Plus was given in section 1 and details of those follow 2 5 2 Network configuration Network configuration applies to the connection between the IMx device and ptitude Observer In general this can be either via local LAN Wi Fi or hard wired and user network infrastructure or a mobile data connection noting though that only the IMx 8Plus has all three c...

Страница 22: ...itch As powered devices PD the IMx 8 IMx 8Plus support both mode A power and data on same pairs and mode B power on spare pairs connections in active or passive PoE installations Refer to the relevant standards IEEE 802 3af or IEEE 802 3at for further information 2 5 4 Mobile data configuration On an IMx 8Plus the option to use mobile data instead of a LAN connection is as discussed in 2 5 2 a par...

Страница 23: ...and bus termination Figure 8 Figure 8 Modbus Bus Connection and End Termination G G3 Ground Devices connected to the bus must have the same ground potential When floating equipment is connected to the IMx bus the G G3 connection can be used to ensure the same ground potential Normally all devices are connected to the same ground connection Important To avoid ground loops ensure that there is only ...

Страница 24: ...does not provide fail safe bias to the bus 2 5 6 LED indicators The IMx 8 IMx 8Plus have two LED indicators on their top end cap so only visible when any outer cabinet is opened a green LED for Power and a red LED for System Figure 10 Figure 10 IMx LED Indicators While the main software is reading the configuration and setting up the system the SYS LED is fast flashing at approximately four times ...

Страница 25: ...ypical example where the accelerometer has an inner screen or shield isolated from the sensor body to be grounded at the IMx and an outer braid armour or shield connected to the sensor body and grounded at the machine to be left floating at the IMx 2 5 8 Connecting voltage sources A1 to A8 For voltage sources 2 wire unpowered sensors or 3 wire accelerometers that are externally powered follow the ...

Страница 26: ...presence of a target For example a single event per rev target can often be arranged using either an existing key or a key way A sensor with suitable sensing range must be selected and gapped appropriately to accommodate any movement between sensor and target that might occur The IMx 8 IMx 8Plus support two wire three wire PNP and pulse sources The digital input and trigger characteristics are spe...

Страница 27: ...lustrated in the following diagrams Figure 13 to Figure 15 Connect appropriately to the type of sensor being used Note that the different sensor types illustrated in these figures are supported by all digital input channels the channel shown in any particular figure is only an example Figure 13 IMx powered 2 wire sensor connected to digital input 1 Sensor power at P1 and P2 is always enabled and c...

Страница 28: ...ine System IMx 8 IMx 8Plus 28 63 SKF Multilog On line System IMx 8 IMx 8Plus User Manual Revision E Figure 14 IMx powered 3 wire PNP sensor connected to digital input 2 Figure 15 Unpowered or externally powered pulse source 2 wire connected to digital input 1 ...

Страница 29: ...nection arrangements for digital inputs and sensors Sensor type Wire colour Wire function Digital input 2 wire IMx powered White Black P D G 3 wire PNP IMx powered Brown Black Blue Output P D G Pulse source or TTL External power no standard P D G Note Where it is required to cascade a single sensor signal to multiple digital inputs on the IMx connect the appropriate D terminals together ...

Страница 30: ...able 24 V DC power for this purpose up to a maximum current of 70 mA shared across all relays connected Ensure then that any relays used have a coil resistance compatible with the minimums indicated below Table 4 Minimum relay coil resistances depend on the number of relay drivers in use No relays Minimum coil resistance for 70 mA maximum demand 1 345 Ω 2 690 Ω 3 1 035 Ω In operation the system re...

Страница 31: ... information current IMx network and Modbus configuration including the company and user details Update the IMx firmware To login to the app and access an IMx system potential users must be invited to be users for that specific company in practice this may mean company operating division location site etc depending on how registration is organised When a company first uses an IMx system SKF will p...

Страница 32: ...rted by the Windows Time service To activate time synchronisation refer to the Time Synchronisation chapter in the ptitude Observer Installation Manual Set time manually Use the Set time function in ptitude Observer which is found under the menu item On line then IMx MasCon devices For IMx devices in stand alone mode the IMx Manager app will check and update the time to the time on the mobile devi...

Страница 33: ...ra with time waveform 1 per day trend data every 10 minutes and digital data every 10 minutes Calculation for data per day would be FFT spectra time waveform trend data digital data 8 x 3200 x 2 8 x 3200 x 5 12 8 x 160 x 6 x 24 50 x 6 x 24 51200 133120 184320 7200 375840 bytes per day or 375 8 KB per day 11 3 MB month average of 30 days per month In systems comprising large numbers of IMx devices ...

Страница 34: ...reserved for future development needs 2 6 Hardware Maintenance The IMx 8 IMx 8Plus hardware i e IMx device and its associated sensors are virtually maintenance free though a yearly inspection of all installed equipment is advised The IMx device does not need to be opened for hardware maintenance or inspection in case of suspected hardware failure replace the faulty device unit replacement Good pra...

Страница 35: ...and the GPS module the slave device The GPS module is connected to the IMx top end cap refer Table 4 below and section 3 3 1 or 3 3 3 Table 5 GPS module connections to the IMx 8 IMx 8Plus Wire colour Description IMx terminal Brown GPS module power Use any available P Black RS485 A RA or A White RS485 B RB or B Blue Module 0V G3 or G Grey Not used GPS module green flashing LED power on amber flashi...

Страница 36: ...ument 2 9 2 Rescue Button The IMx 8 IMx 8Plus have a rescue button that sets the device temporarily in maintenance mode without a measurement configuration This mode is used to support troubleshooting and testing without the need to erase configuration and data The rescue button is designated Sw and is accessible via the hole in the top end cap refer 3 3 1 or 3 3 3 To enter maintenance mode gently...

Страница 37: ...d for basic sensor and cable troubleshooting by observing the available measured values and comparing to expected results for that sensor type and current operating condition If the machine is stopped it may be possible to tap an accelerometer for example to test for a response If such troubleshooting steps are inadequate a full measurement or output circuit loop test may be required Note that it ...

Страница 38: ... mounting and try substituting the sensor a Did the fault remain after checking the mounting and changing the sensor NO If substituting the sensor cleared the fault then the sensor was defective and should be replaced YES The fault may be in the analogue input section of the IMx device Contact TSG for advice and further information 3 Is the voltage close to zero typically 0 5 V NO Skip to step 4 Y...

Страница 39: ...st disconnect one pole of the sensor cable and measure the open circuit voltage to verify whether the open circuit voltage is normal about 24 V DC If it is normal then the fault is probably in the sensor otherwise the fault is likely in the IMx 5 Disconnect the connector from the sensor and short circuit the pins in the sensor contact then re measure the voltage on the IMx terminal block Did the v...

Страница 40: ...OK double check the channel assignment and its configuration and if no reason for the measurement error is found contact TSG for advice 2 Disconnect one signal wire from the terminal connector and recomplete the circuit using a DMM set in current measurement mode Does the measured mA current reasonably agree with the expected value YES Problem appears to be related to the IMx hardware installation...

Страница 41: ...fective troubleshooting for tacho signals will likely require a handheld portable oscilloscope or DMM with oscilloscope capabilities noting that a battery powered unit is preferred It will be hindered if the IMx cannot be accessed when the speed signal is active 1 Check the sensor installation the security of the mounting the gap to the target and the differential gap between target and no target ...

Страница 42: ...be checked In particular look for any indication of a double pulse where a second trigger occurs in quick succession to the first as this would likely cause it to be rejected as being an invalid speed signal Where the sensor is powered by the IMx this has been known to occur if the sensor initially tries to draw excessive current on the leading edge of the event i e the maximum peak demand of the ...

Страница 43: ...vice etc 4 Measure the DC voltage at the relay coil terminals using a digital voltmeter Is it approximately 24 V DC YES Check again that the correct relay output is being tested and that the configuration is correct Check also that this relay is wired to the correct IMx relay driver output If so the test suggests a fault in the IMx device contact TSG for further advice NO The IMx relay driver outp...

Страница 44: ...own as 8 N 1 eight data bits no parity bit and one stop bit transmitted at 9 600 or 19 200 bits per second are used If devices are differently set by configuration or otherwise communications will fail For further information on RS485 and Modbus RTU refer to the documents listed 2 9 6 Connections to Monitor The status of the connection to the ptitude Observer Monitor server connected or not is ref...

Страница 45: ...y information CE marking WEEE marking and RoHS compliance The QR code contains the product information shown alongside it Note that for the IMx 8Plus the same MAC address applies to whichever of the local network interfaces is enabled RJ45 or Wi Fi Figure 17 Manufacturing data label IMx 8 example Figure 18 Manufacturing data label IMx 8Plus example Refer to the detailed product specifications 3 2 ...

Страница 46: ... F o Storage 50 to 85 C 58 to 185 F Humidity 95 relative non condensing Measurement category II Pollution degree 2 Maximum altitude 2 000 m 6 562 feet Vibration tolerance 4 13 2 Hz 1 mm 13 2 100 Hz 0 7 g Number of axes 3 mutually perpendicular 3 2 2 Power 10 W or less typical 13 W maximum o Power over Ethernet PoE max 13 W nominal voltage 48 V or o 24 to 48 V DC nominal range 22 to 50 V DC o Suppl...

Страница 47: ...tal outputs Three relay driver outputs System status RS Warning and Alarm R1 and R2 24 V DC at 70 mA maximum available all not per relay Minimum individual coil resistances 345 Ω 1 relay 690 Ω 2 relays and 1035 Ω if 3 relays are in use 3 2 6 Analogue measurement 24 bit A D conversion o Enables continuous data capture without gain or AC DC switching One A D converter for each channel o Simultaneous...

Страница 48: ...rameters Data storage on time event or alarm condition Detection of sensor and cable fault Watchdog and self testing 3 2 9 Interfaces The IMx 8 incorporates only an Ethernet RJ45 interface For the IMx 8Plus the mobile data and Ethernet interfaces are alternatives and cannot be used concurrently Mobile data IMx 8Plus only o LTE 4G and legacy 2G 3G networks Refer to 3 6 for details of the frequencie...

Страница 49: ...necting to mains powered equipment 3 2 10 Storage capacity 4 GB effective flash memory configured for pSLC pseudo single level cell mode for higher reliability than normal MLC multi level cell mode 3 2 11 Data processing memory 64 MB RAM for data processing 3 2 12 IMx 8 certifications Calibration traceable to BIPM CE certified in compliance with 2014 30 EU EMC immunity in compliance with EN 61000 ...

Страница 50: ...tes uses and can radiate radio frequency energy and if not installed and uses in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and...

Страница 51: ...o provide a separation distance of at least 6 5 cm from all persons Scan region channels 1 11 are supported DNV GL Renewables certificate valid only when the IMx 8Plus DIN rail version is mounted in an IP65 cabinet in a wind turbine that is built according to the DNV GL wind turbine type approval Marine type approvals o DNV GL o ABS o Lloyd s Register BIPM International Bureau of Weights and Measu...

Страница 52: ...nnector with support for Power over Ethernet USB B USB mini B connector service interface 485 RA RB RS485 2 wire A and B terminals G3 Ground connection for use as required by RS485 and or CAN CAN CL CH CAN bus for vehicle systems no current firmware support D1 D2 2 digital inputs Ground Digital Power terminals for each LEDs Pwr Power green normal on Sys System red normal off Sw Switch push button ...

Страница 53: ...ue inputs 1 to 8 Analogue Ground terminals for each Connect signal to A R2 Relay 2 relay driver output open collector 24V 24 V DC power for relay coil R1 Relay 1 relay driver output open collector 24V 24 V DC power for relay coil RS System relay relay driver output open collector 24V 24 V DC power for relay coil Demountable terminal connectors For the bottom connectors two 8 way A1 to A8 and one 6...

Страница 54: ...ernet Wi Fi Connector for an external antenna where Wi Fi is used B USB mini B connector service interface LTE 1 2 Mobile data connectors for external antenna where LTE is used 485 A B RS485 2 wire A and B terminals G Ground connection for use as required by RS485 and or CAN CAN L H CAN bus for vehicle systems No current firmware support D1 D2 2 digital inputs Ground Digital Power terminals for ea...

Страница 55: ...alogue inputs 1 to 8 Analogue Ground terminals for each Connect signal to A R2 Relay 2 relay driver output open collector 24V 24 V DC power for relay coil R1 Relay 1 relay driver output open collector 24V 24 V DC power for relay coil RS System relay relay driver output open collector 24V 24 V DC power for relay coil Demountable terminal connectors For the bottom connectors two 8 way A1 to A8 and o...

Страница 56: ...ll dimensions and further notes 3 4 2 IMx 8 IMx 8Plus IP65 cabinets optional The SKF Multilog IMx 8 IMx 8Plus is usually housed within an IP65 cabinet Two basic versions of these optional painted steel cabinets are available from SKF CMON 4150 with a pre drilled gland area CMON 4151 without a pre drilled gland area In the pre drilled cabinet the lower short wall is predrilled for 17 glands refer t...

Страница 57: ...s SKF Multilog On line System IMx 8 IMx 8Plus User Manual Revision E 57 63 Important safety warning for IP rated cabinets Figure 20 CMON 4150 cabinet with pre drilled gland area Always utilise all provided fixing points to secure the cabinet to the mounting surface ...

Страница 58: ... be integrated into existing cabinets is available to order under the SKF reference CMON 4146 The HMI display is used for visualization of monitored machine health such as warning alarm status and includes both Ethernet and serial communications capabilities Figure 22 HMI display CMON 4146 It is 24 V DC powered less than 10 W provides a 7 diagonal sized screen and the external face has an IP65 rat...

Страница 59: ... Rail and the images shown in the figure below show its usage there a External view b Internal mounting view Figure 23 IMx 8Plus mobile data Wi Fi antenna optional It has a single central anti rotation mounting that requires a 15 by 15 mm square entry through the enclosure wall maximum corner radius of 1 mm Externally the maximum installed dimensions of the circular antenna and gasket part are 146...

Страница 60: ...tenna with similar specifications and the same or lower gains Bluetooth support in the IMx 8Plus remains via the USB Bluetooth dongle and not the antenna 3 7 GPS module optional The GPS module CMON 4139 is connected to the IMx 8 IMx 8Plus via a 5 metre integral cable and should be fitted externally to the cabinet in a location that allows satellite tracking An M12 cable gland is included The overa...

Страница 61: ...ctrical waste and electrical equipment should be recycled as specified by the WEEE directive and not be placed in the general refuse Product should be sent to an approved recycling centre for safe recycling recovery reuse or sent to SKF Sverige AB for proper recycling SKF Sverige AB Aurorum 30 977 75 Luleå Sweden ...

Страница 62: ......

Страница 63: ...APPENDIX A Limited Warranty SKF Multilog On line System IMx 8 IMx 8Plus User Manual Revision E 63 63 Appendix A Limited Warranty SKF Limited Warranty Download the latest version from skf com ...

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