SKF Multilog On-line System DMx CMMA 9910/CMMA 9920 Universal distributed vibration monitor The SKF Multilog On-line System DMx provides distributed vibration based machinery protection and condition monitoring in a single device, for use in both conventional and hazardous areas. Four channels Intrinsically safe Integral eddy current probe drivers Reduced installation costs SKF USA Inc. class leaders in condition monitoring, have joined forces with intrinsic safety experts Pepperl+Fuchs to develop the SKF Multilog On-line System DMx. The SKF Multilog DMx offers a four channel vibration monitoring solution that for the first time allows the requirements of critical machinery monitoring, from transducer to dynamic data processing, to be fulfilled by an intrinsically safe device located on the machine skid. Protection and condition monitoring The SKF Multilog DMx provides two distinct vibration monitoring capabilities in the same module: Machine protection measurements to react to a vibration alarm that may signify a looming catastrophic failure, in compliance with the API 670 standard. Condition monitoring measurements to be used by sophisticated software to predict a potential catastrophic failure. Intrinsic safety The complexity of vibration measurements has previously forced the monitoring electronics into the safe area. The SKF Multilog DMx takes the step into the Zone 1 hazardous area. This breakthrough allows the benefits of distributed modularity enjoyed by process IO and transmitter systems to be extended to fully featured vibration monitoring. The low power consumption requirements of intrinsically safe devices also provide energy savings when compared to control room monitor racks. Reliability A reliable machine shutdown command is a prerequisite, and the SKF Multilog DMx offers Functional Safety compliant PFD data to IEC 61508 (SIL levels).
Features Digital technology processing When compared to the traditional control room architecture, distributing modular vibration monitors at each machine across the plant provides cost savings from: Combined machine protection and analysis capabilities Typical applications are for vibration, thrust or pressure monitoring (any engineering units possible) Vector data; up to four user programmable amplitude and phase vectors per channel Overall level data Dynamic data FFT and time waveform Steady-state and transient machine operation All configuration data is held on board the module, no pre-knowledge or database look-up required Multi-configuration storage capability advantageous to OEMs Configuration data is stored in non-volatile memory and restored on power-up Sophisticated and flexible alarming capability, any logical combination of measurements allowed Multiple LEDs for local indication of module, channel and alarm status, and diagnostic data Integrated self test and calibration features, potentiometer free Storage of individual names/tags for channels, alarms, tachometer and configuration sets Modularity and configurability Transducer systems The selection and configuration of the vibration monitor stays in the scope of the machine package, without need to interface at a sensor level with instrumentation outside that package. On-board digital eddy current probe drivers, which can be configured to accommodate a range of probe types, cable lengths and target materials Built-in barriers for direct connection to Zone 0 mounted sensors [ia] IIC Universal inputs: dynamic and position measurements (any combination) within the same module Fully configurable for any engineering units, transducer sensitivity or any filter cut-off frequencies Independent transducer power supply circuits for each channel Reduced installation costs Field cabling The many multi-pair cables carrying analogue signals between machine and control/instrument room are replaced with single or dual-pair communications cables carrying digital data. A significant reduction in copper costs is realized. Instrument room space Costly cabinets can be eliminated. Semi-populated 19 monitor racks are no longer required to achieve safety system segregation. Installation man-hours Physical loop-checking of many hundreds of sensor points on a plant can be reduced to a few data link chains, saving significant manhours for the machine manufacturer, LSTK contractor and the end user maintenance team. 2 Communications Dual redundant, intrinsically safe, RS 485 links Both links support transfer of any data type: status, level, analysis data or configuration Single master, multiple slave protocol with message CRC Fast messaging scheme for shutdown commands, dynamic module control and data acquisition Duplicate terminals for serial communications and transducer inputs to ease wiring congestion
SKF distributed system advantage New technology reduces installation costs without compromising functionality. API 670 Style 19" Rack-Mount System Architecture Sensor Barrier Digital processing within a vibration monitor located on the machine skid significantly reduces field wiring. Monitor Sensor Conventional Driver Hazardous area Safe area Field mounted, distributed monitors reduce costly control room cabinets and rack hardware. SKF Multilog DMx System Architecture Sensor NEW Barrier DMx monitors with integral safety circuits almost eliminate traditional barriers. Sensor Driver and monitor Hazardous area Safe area Easy connection to plant control and information networks by common protocols. Universal vibration monitor protection and condition monitoring in a single device, for use in both conventional and hazardous areas. 3
Technical specifications Inputs Sensors: Four channels dynamic Sensor types: Inputs from, and power to, two-wire or three-wire accelerometers, velocity transducers or eddy current probe systems. Integral driver circuits for directly connected eddy current probes. Sensor power: 3,3 or 14 ma constant current, +20 V constant voltage at up to 14 ma Logic input: Single logic TTL level input for tachometer input or tachometer cascade from another SKF Multilog DMx module Tachometer input: Analog tachometer input (range 0 to 5 V) with programmable threshold level Keyway phase reference input: Two internal eddy current probe drivers on dynamic inputs may be routed to tachometer processing, with programmable thresholds Data acquisition and evaluation General Sampling: Parallel A/D conversion, digital signal processing, on-board clock calendar Input frequency range: DC to 20 khz Vibration acceleration, velocity and displacement: Fully programmable AC and DC measurement units and sensitivities SKF Acceleration Enveloping: Filter 1: 5 to 100 Hz Filter 2: 50 to 1 000 Hz Filter 3: 500 to 10 000 Hz Detection types: True RMS, peak, Peak-to-Peak and rectified average signal assessments are concurrently available Axial thrust and process variables: Fully programmable DC measurement units and sensitivities Application specific measurements: Eccentricity, absolute shaft vibration, Smax, differential expansion, rotor acceleration (r/min per minute) and peak speed for Turbine Supervisory Instrumentation; rod drop (untriggered and triggered) for reciprocating compressors Speed: Two tachometer processing channels, sourced from analog speed sensor, or internal eddy current probe driver circuit, calculating actual, and factored machine speed. One event per revolution target is required for vector data. Maximum event rate is 87 000 pulses per minute. Filter ranges: Low pass and high pass filters (with two level integration if required) are implemented digitally Accuracy: ±1% excluding transducer circuit Outputs Communications link: Independent and isolated dual high speed RS 485 links Communication speed: Up to 125 kbaud (1,5 Mb/s capable) Digital output: Five opto-isolated outputs for local alarm, shutdown or tachometer cascade between modules Machinery protection Response to alarm condition: < 100 ms in typical applications Alarm delay: Programmable 0 to 15 seconds, pre- or post-voting Alarms: High, low, in window, out of window for any measurement Alarm voting: Configurable voting in any logical combination of any measurement. Result transferred by communications link and opto-isolated output. Transducer OK: Frequency monitoring provides enhanced OK detection, in addition to regular DC gap voltage monitoring, for directly connected eddy current probes. Bias voltage check for standard eddy current probe systems and accelerometers. Trip multiply: User definable factors independent for each alarm parameter activated by communications link Danger bypass: Activated by communications link Local indication: LEDs on module; 4x Tx OK, 5x alarm, 1x power, 1x module run, 1x module status Condition monitoring FFT and time data: Continuous and separate signal analysis paths for 2 048-point time waveforms and 800-line FFT for all channels Frequency band monitoring: Four independent, configurable bands for each FFT all with their band RMS, maximum line and frequency values Vector data: Four user definable n.nx amplitude and phase vectors per channel (e.g., 1x, 2x, 0,4x, 7x) for monitoring or balancing. Transient data acquisition: Data capture triggered on transient window low, transient window high, RPM, time or RPM + time Power requirements Operating voltage: 8,6 to 9,5 V supplied by an Intrinsically Safe power supply Power consumption: 4 W typical 4
Physical Two part system: Module consists of a removable processing unit and a terminal base mounted on DIN-rail Dimensions: Height: 156 mm (6.14 in.) Width: 104 mm (4.09 in.) Depth: 116 mm (4.57 in.) Weight: 0,5 kg (1.1 lb.) maximum Mounting information: See the following figure for DIN-rail mount Enclosure requirements: Minimum IP 20 for II 2 (1) G ib [ia] IIC T4 and II (1D) [ iad] Minimum IP 54 for I M2 (M1) ib [ia] I Hot swappable: Yes; processing unit hot swappable on terminal base without disturbance to wiring 156 mm (6.14 in.) 116 mm (4.57 in.) 104 mm (4.09 in.) SKF Multilog DMx module dimensions. 5
Environmental Hazardous area: ATEX approved IEC approved culus approved EMC: EMC tested to EN 61326, EN 61000-6-2 and NAMUR NE21 Compliance: CE mark compliant, conforms to 94/9/EC ATEX Directive and to 89/336/EG EMC Directive Operating temperature range: 20 to +65 C ( 5 to +150 F) Storage temperature range: 20 to +100 C ( 5 to +210 F) Humidity: 93% relative humidity, non-condensing Shock resistance: 15 g peak for 11 ms Vibration resistance: 1 g, 10 to 150 Hz to IEC 60068-2-6 Network SKF software interfaces for: Configuration and data display software Condition monitoring and plant asset management software Decision support software Common control protocols Electrical data BVS 07 ATEX E 075 X ATEX directive group/category Gas: II 2(1)G ib[ia] IIC T4 Mining: I M2(M1) ib[ia] I Dust: II (1D) [ iad] IEC BVS 07.0028 X [Zone 0] ib[ia] IIC T4 ib[ia] I [ iad] culus IS Process control equipment for use in Hazardous Locations, CL I, GP ABCD; CL II, GP EFG; CL III; CL I, Zone 1, A ib[ia] IIC; ib[ia] IIC, T4. Providing IS circuits when installed per control drawing number 32125700. Associated Equipment [ ia] Appareillage Connexe. 6
MADE IN U.S.A. SKF Condition Monitoring 8 mm DISPLACEMENT PROBE DRIVER by S/N -24V GND SIG GND -24V MADE IN U.S.A. SKF Condition Monitoring CMSS668 8 mm DISPLACEMENT PROBE DRIVER by S/N Up to 31 modules RS 485 #1 RS 485 isolator(s) RS 485 #2-24V GND SIG GND -24V CMSS668 Area Zone 1 or Zone 2 8,5 W 4 Power supply ample SKF Multilog DMx schematic; eight-channel installation. 7
Electrical data Table 1 Apparatus supply and input/output parameters CMMA 9910 and CMMA 9920 Power supply (V+, V ) RS 485 (channel 1 and channel 2) Tacho input Logic input Opto output (channel 1 to channel 5) Connection 33 and 46 (+) 49 and 62 ( ) Channel 1: 38, 54 39, 55 Channel 1: 41, 57 34, 36, 47, 50, 52 and 63 Channel 2: 42, 58 Channel 3: 43, 59 Channel 2: 35, 37, 48, 51, 53 and 64 Channel 4: 44, 60 Channel 5: 45, 61 Maximum values per channel: Voltage U i 9,5 V 4,2 V 5,4 V 5,4 V 15,0 V Voltage U o - - - 3,6 V 5,4 V 5,4 V - - - Current I i 1 A - - - - - - - - - 50 ma Current I o - - - 103,5 ma 3 ma 2 ma - - - Power P i 9,5 W - - - - - - - - - 40 mw Power P o - - - 94 mw 4 mw 3 mw - - - Characteristic - - - linear linear linear - - - Internal capacitance C i 120 nf negligible negligible negligible negligible Internal inductance L i negligible negligible negligible negligible negligible Type of protection ib IIC ib IIB ia I ia IIC ia IIB ia I ia IIC ia IIB Ix ia I ia IIC ia IIB ia I ia IIC ia IIB ternal capacitance C o (µf) - - - - - - - - - 100 1 000 1 000 65 1 000 1 000 65 1 000 1 000 - - - - - - ternal inductance L o (mh) - - - - - - - - - 3 10 40 1 000 1 000 1 000 1 000 1 000 1 000 - - - - - - L o/r o (mh/ω) - - - - - - - - - 0,38 1,52 5 8 35 100 13 52 100 - - - - - - Multi-drop configuration, dual RS 485 communications and power. 34 3536 37 46 47 48 33 34 35 46 47 48 50 5152 53 62 6364 49 50 51 62 63 64 RS 485 2A RS 485 2B RS 485 1A RS 485 1B Power Power + 8
Electrical data Table 2 Apparatus supply and input/output parameters CMMA 9910 only Connection Eddy current probe (ECP) input (channel 1 to channel 4) Two (2) wire input (channel 1 to channel 4) Channels Channel 1 Channel 2 Channel 3 Channel 4 Channel 1 Channel 2 Channel 3 Channel 4 Terminals 1, 2, 17, 18 5, 6, 21, 22 9, 10, 25, 26 13, 14, 29, 30 (3) 19, 20 (7) 23, 24 (11) 27, 28 (15) 31, 32 Coax ECP1 ECP2 ECP3 ECP4 - - - - - - - - - - - - Maximum value per channel Voltage U i 5,4 V 28,0 V Voltage U o 5,4 V 5,4 V Current I i - - - - - - Current I o 16,3 ma negligible Power P i - - - - - - Power P o 22 mw negligible Characteristic linear linear Internal capacitance C i 200 nf negligible Internal inductance L i negligible negligible Type of protection ia IIC ia IIB ia I ia IIC ia IIB ia I ternal capacitance C o (µf) 65 1 000 1 000 65 1 000 1 000 ternal inductance L o (mh) 100 400 1 000 1 000 1 000 1 000 L o/r o (mh/ω) 1,60 6,40 20 40 1 000 1 000 Eddy current probe using internal digital drivers. Self-generating sensor (e.g., velocity pickup). Eddy Current Probe CMSS 68-071-00-30-5A 19 20 a = signal + (white) b = signal (black) 9
Electrical data Table 3 Apparatus supply and input/output parameters CMMA 9920 only Connection Eddy current probe (ECP) input (channel 3 to channel 4) Transducer input, two (2) wire input (channel 1 to channel 4) Transducer input, three (3) wire input (channel 1 to channel 4) Channels Channel 3 Channel 4 Channel 1 Channel 2 Channel 3 Channel 4 Channel 1 Channel 2 Channel 3 Channel 4 Terminals 9, 10, 25, 26 13, 14, 29, 30 (3) 19, 20 (7) 23, 24 (11) 27, 28 (15) 31, 32 4, (3) 19, 20 8, (7) 23, 24 12, (11) 27, 28 16, (15) 31, 32 Coax ECP3 ECP4 - - - - - - - - - - - - - - - - - - - - - - - - Maximum value per channel Voltage U i 5,4 V 28,0 V 28,0 V Voltage U o 5,4 V 5,4 V 26,5 V Current I i - - - - - - - - - Current I o 16,3 ma negligible 90,9 ma Power P i - - - - - - - - - Power P o 22 mw negligible 432 mw Characteristic linear linear linear Internal capacitance C i 200 nf negligible negligible Internal inductance L i negligible negligible negligible Type of protection ia IIC ia IIB ia I ia IIC ia IIB ia I ia IIC ia IIB ia I ternal capacitance C o (µf) 65 1 000 1 000 65 1 000 1 000 0,095 0,73 3,90 ternal inductance L o (mh) 100 400 1 000 1 000 1 000 1 000 3 10 50 L o/r o (mh/ω) 1,60 6,40 20 400 1 000 1 000 0,05 0,23 0,70 Piezoelectric accelerometer (two-wire ICP type). Eddy current probes using external drivers (e.g., API 670). Eddy Current Probe CMSS 68-071-00-30-5A 19 20 3 4 a = signal + (white) b = signal (black) 19 20 4 Shielded twisted triad cable e.g., Belden 8771 MADE IN U.S.A. by SKF Condition Monitoring -24V GND SIG GND -24V S/N 8 mm DISPLACEMENT PROBE DRIVER CMSS668 CMSS 668P-16-9 10
Configuration and data display software (CMSW 6200-EN) SKF Multilog DMx Manager software provides comprehensive transducer, data processing and alarm configuration in a user friendly interface. The software also provides live display of scalar value, timewaveform, FFT and orbit data from SKF Multilog DMx module monitor channels. For more comprehensive condition monitoring and analysis needs, an interface into the SKF @ptitude Monitoring Suite is available. Ordering information CMMA 9910 Four (4) channel intrinsically safe SKF Multilog DMx module with 4x internal digital eddy current probe drivers, 2x tacho input. No transducer power. ib IIC. CMMA 9920 Four (4) channel intrinsically safe SKF Multilog DMx module with 2x internal digital eddy current probe drivers, 2x tacho input. With transducer power. ib IIC. CMSW 6200-EN SKF Multilog DMx Manager: Software for configuration and live display. 11
Please contact: SKF USA Inc. Condition Monitoring Center San Diego 5271 Viewridge Court San Diego, California 92123 USA Tel: +1 858-496-3400 Fax: +1 858 496-3531 Web: www.skf.com/cm SKF, @PTITUDE and MULTILOG are registered trademarks of the SKF Group. All other trademarks are the property of their respective owners. SKF Group 2012 The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein. SKF Patents include: #US04768380 #US05679900 #US05845230 #US05854553 #US05992237 #US06006164 #US06199422 #US06202491 #US06275781 #US06489884 #US06513386 #US06633822 #US6,789,025 #US6,792,360 US 5,633,811 US 5,870,699 #WO_03_048714A1 PUB CM/P8 12837 EN April 2012 skf.com