Manual - VMI International AB
Contents
1. Vibration Measurement Instruments VN VIBER M2 M Machine Protector 1 or 2 Channels 3 LE 3 lO r mm s H2 IS an A VIBER M2 sme s 0 VIBRATION MONITOR 1 J We A O SET a see mile j d e Ch2 100mV g I B 1 q 6 ei ERROR e ERROR Mains 100 240V d r been 9 CA RESET 9 54 AA IP 4 p E P wm 1 ic User manual Version 1 7 Accelerometer Channels CH A B ver 1 3 1 4 Vibration Measurement Instruments Wy Index N a 2 9 A VM 9 2 9 3 9 4 J 9 6 v 9 8 9 9 Important information Introduction General description How to connect Viber M2 Alarm settings Recommended measuring directions and transducer locations according to ISO 10816 3 Vibration standards Dismantling Description of Settings Accelerometer Setup High Pass Filter Low Pass Filter signal Range Output Signal Alarm Function Relay Coil Relay 1 and Relay 2 Error Indication 9 10 Alarm Time Delay 9 11 Alarm Reset Function ONIN n 10 10 11 11 il 11 11 12 12 12 12 17 13 13 m Vibration Measurement Instruments 1 Important information Safety precautions Vibration measurement involves measurement on rotating machines Keep a safe distance to rotating parts and secure transducers and transducer cables from rotating parts Always follow internal local and national security regulations When working with weights on the ro2. 100 mV g between 2 Hz 15000 Hz Min load 10 k Q If only one channel is used then the second channel input must be terminated with a resistor of about 4700 ohms No channels should be left open Vibration Measurement Instruments m Alarm indicator Display upper alarm chl Alarm level potentiometer screw upper alarm ch1 Show alarm level button upper alarm chl Transducer error indicator ch2 Alarm level potentiomet lower alarm ch1 Alarm RESET button ch2 Front panel BNC connector 1 Connection panel 4 How to connect Viber M2 Unscrew the lid of the connection panel Channel 1 Channel 2 oooooolooeoooo ooooooooolooo E 5 2 2 5 123123 12 3 MANS o lt Se 2 0 gt RELAY3 RELAY1 RELAY2 U c 0 U _ 100 240 V AC lt 2 E Max 250 V AC 54 or 24v optional 1 E Relay function lt The schematics above shows the relay positions when the 9 9 level is below the alarm limit a a o o Analysis output for connections to advanced monitoring Same as the front panel BNC connection 4 N 5 si Q Q a a 0 0 3 Z E 2 E gt VIBRATION Fig 2 Connection Diagram Vibration Measurement Instruments VN The Viber M2 casing is IP65 protection classed this can be degraded if improper cable seal ings are used The Accelerometer is connected between IN and IN signal conductor to IN and common to IN th
3. be ON For 100 mm s both 1 and 3 should be ON See pictures on pages 14 and 15 The Viber M2 is factory set with J3A and J3B in the range 0 10 mm s 11 a Vibration Measurement Instruments 9 5 Output Signal A mean value of the signal true RMS is then created This RMS signal is available as a DC current between 4 and 20 mA If a transducer error cable broken or shorted occurs the current is set to 0 mA Maximum output voltage is 12 Volt at maximum 600 ohm load This signal is suitable for an external panel instrument or a process logging system 9 6 Alarm Function The RMS signal is also input to two independent sets of alarm comparators where usually one is set to a lower level and serves as a first warning and the other to a higher level to give a critical warning If the RMS level is higher than the alarm value set by any of the independent potentiometers the comparator will turn on the front indicator LED and at the same time a preset delay circuit is triggered If the RMS level is above the alarm level during the whole time delay the alarm relay is activated 9 7 Relay Coil With the jumper S1 and S2 on the motherboard it is possible to select if the relay coil shall be energized above or below the alarm limit With the jumper in position B the coil is energized if the vibration is below the alarm limit This position also means that a power failure to the Viber M2 gives a change in the rel
4. upper alarm level H2 is set in the same way using its dedicated buttons Both H1 and H2 can be adjusted independently If the Alarm RESET button is set in manual mode the Alarm indicator and the relay will stay in alarm mode until the Alarm RESET button is pushed If the Alarm RESET button is set in auto mode the Alarm indicator will switch off and the relay will change back when the signal is below the alarm level On delivery the upper alarm level H2 is set to 71 and the lower H1 to 28 of full scale Alarm indicator Alarm level potentiometer ERROR how alarm level indicator Fig 3 Lower alarm m Hl buttons Fig 4 ERROR indicator The ERROR indicator can change to yellow or red Yellow means that no transducer is detected the cable is probably cut off or the transducer is disconnected Red means that the cable is short circuited or that you have a faulty transducer 6 Recommended measuring directions and transducer locations according to ISO 10816 3 Measure on or as close to the bearings as possible Measure vertically and horizontally in a direction that points to the shaft senha Measure axially in the same height as the shaft centre Fig 5 Measuring directions Do not measure on thin sheet metal plates Before permanently mounting the transducer measure on the positions as suggested in fig 5 For monitoring purposes use one of the measuring points with the highest vibration 2 Vi
5. A DC current used to power the internal amplifier in the accelerometer The input IN is the return signal input from the accelerometer and is also GND The input SCREEN is internally connected to the input GND and can be used for the cable shield Note that the cable shield should be connected in one end only 9 2 High Pass Filter With the switch S2 in position LEFT minimum frequency range is 10 Hz in position RIGHT 2 Hz Unless otherwise is specified in the order the Viber M2TM is factory set with S2 in position LEFT 10 Hz 9 3 Low Pass Filter With the switch SI in position LEFT maximum frequency range is 4 kHz With the switch S1 in position RIGHT the low pass filter is disabled Unless otherwise is specified in the order the Viber M2 is factory set with SI in position LEFT up to 4 kHz The acceleration signal is available at the AC output BNC and at the screw terminal AC The signal sensitivity is the same as the connected transducer approximately 100mV g 9 4 Signal Range The velocity signal is amplified with a range amplifier in one of 3 preset ranges 10 20 or 100 mm s selectable with the DIP switches J3A and J3B J3A settings J3BSettings 1 ON 0 10 mm s 1 ON 0 100 mm s 2 ON 0 20 mm s 2 ON 0 10 and 0 20 mm s 3 ON 0 100 mm s 3 ON 0 10 and 0 100 mm s Only one switch on J3Ashall be ON For 10 mm s both 2 and 3 should be ON at the same time For 20 mm s only 2 should
6. S4 will change the time delay on channel 1 between 0 and 30 sec J 1 7 J 17 13 MILAT J BLAT Ear 7 Fig 7 Motherboard relay coil 54 and 55 position 16 te im I mu R20 bai qm a SP mm zu ON HH L m eso R48 R47 LIL LE Beil rsd 02 A O a we J VMI AB M2 CH A 1 3 Fig 8 Channel Card SI S2 S6 and S7 position 17 18 19 VA VMI International AB Gottorpsgatan 5 SE 582 73 Link ping Phone 46 0 13 474 37 00 E mail infovmiab com www vmiab com
7. ay output The Viber M2 is factory set with the switches S1 and S2 on the motherboard in position A the coil is energized if the vibration is above the alarm limit 9 8 Relay 1 and Relay 2 Relay 1 will change at the H1 level and Relay 2 will change at the H2 level Below the alarm level when relay is not activated the screw terminals marked with 2 and 3 are short circuited When the relay 1s activated the terminals 1 and 3 are short circuited The channel cards share the relays A relay is activated when the vibration level of any of the channels is higher than the alarm level The relay breaking capacity 1s 250 VAC 5 Amp 9 9 Error Indication The Viber M2 detects two types of transducer errors Shorted or Broken Cable by measuring the transducers bias voltage A cable error is reported via the ERROR LED on the front panel of the instrument A broken cable is indicated with a yellow light while a short circuit is indicated with a red light Also Relay number 3 is activated and the current that normally is 4 20 mA is set to 0 12 Vibration Measurement Instruments VN 9 10 Alarm Time Delay The alarm time delay is selected independently for each set of comparators between 3 and 30 s using the two potentiometers P1 and P2 on the mother board Approximate time delay 3 sec Note The orientation of the potentiometers may vary on different boards The Top 30 7 position in this fig represents the f
8. bration Measurement Instruments VN 7 Vibration standards Extraction from ISO 10816 Flex Rigid Fiex Rigid Flex Rigid m Group 1 Large machines with rated power between 300kW to 50 MW Group 2 Medium size machines with rated power between 15kW to 300kW Group 3 Multivane impeller pumps with seperate drivers that have power above 15kW Group 4 Multivane impeller pumps with integrated drivers that have power above 15kW Rigid mounting usually means that the machine is directly mounted on a concrete foundation Flexible usually means that the machine is mounted on flexible feet or a weak steel structure 8 Dismantling Warning warranty is voided if the product is dismantled Unscrew the 4 screws at the corners of the front panel Pull out the electronics gently with the help of the BNC connectors The channel cards and the displays are attached to the front panel Note The card mounting brackets on channel card 2 are placed at the solder side and on channel card 1 at the component side 10 Vibration Measurement Instruments VW 9 Description of settings 9 1 Accelerometer Setup The Viber M2 accelerometer input has a 4 mA constant current generator at maximum 20VDC the input sensitivity is 100mV g An input amplifier that converts acceleration to velocity The input IN on the mother board is the signal input from the accelerometer and also the output for the 4m
9. e cable screen is connected to the screen input Note that the accelerometer is polarity sensitive and some transducers can be destroyed by reversed polarity Look at the transducer data sheet for correct polarity In an industrial environment it is normal possible to use up to 200 meter of cable between the transducer and the M2 The AC OUT terminal and the BNC connector output are buffered signal with the same sensitivity as the connected transducer The buffered output can normally absorb the constant current source coming from connected analyzer without influencing the signal The signal is accessible between terminals GND and AC OUT The mA output gives a signal between 4 20 mA proportional to the selected full scale range Maximum load of mA output is 600 Q The signal is accessible between terminals GND and mA Relay 1 acts on alarm level H1 see fig 1 Front panel Relay 2 acts on alarm level H2 Relay 3 acts on transducer and cable failure MAINS As standard the M2 is delivered with a switched power supply that accepts 100 240 VAC If the Viber M2 is delivered for 24 VDC the same terminals are used as for 240 VAC The M2 1s polarity protected and the polarity on the terminals can be changed Vibration Measurement Instruments 5 Alarm settings While the Show alarm level switch is pressed the display shows the alarm level in mm s The alarm level can be adjusted with the Alarm level potentiometer The
10. locity This signal can be amplified in 3 selectable ranges 0 10 0 20 and 0 100 mm s Other ranges are optional upon order of the product The instrument measures the RMS value of the signal within the selected frequency range When the preset alarm levels are reached a LED lamp is lit If the levels stays higher during the selected delay time 0 30 sek the relay is changing The M2 has Manual or automatic resetting of the alarm status The signal level is converted to a corresponding current output between 4 20mA This signal is available on terminals for connection to other instruments or data logger The current output is disabled in case of transducer or cable failure Enclosure Sealed IP65 PVC box with transparent lid for overview of vibration and or temperature levels alarm settings and alarm status Enclosure dimensions Width 170mm height 160mm depth 130mm The current output is 4 20 mA on pc board Max load not more than 600 ohm or 12V 20 mA refers to 10096 of selected measuring range The time delay of relay activation is adjustable between 0 and 30 sec Power supply Standard is 100 240VAC Optional 24VDC Input sensitivity Standard 100mV g The positive input terminal supplies a 4 mA constant current at max 20V to the built in transducer amplifier Frequency range 10 4000 Hz is preset The lowest frequency range can be changed to 2 Hz and the low pass filter can be disabled on the pc board Analysis output
11. the purpose is to make repair and indicate the original date of shipment to you if possible Warranty is voided if other changes then recommended by VMI are made to the product Vibration Measurement Instruments 2 Introduction Viber M2 is a versatile reliable and easy to use machine protector unit M2 will give an alarm or stop the machine if failure is imminent The M2 sends constantly machine vibration information as well as transducer and cable condition to the PLC Viber M2 has two or option with one monitoring channels available for accelerometers Each channel has Three measuring ranges Two independent alarm levels with manual or auto reset Two frequency ranges Current output proportional to the vibration level 4 20 mA suitable for connection toa PLC Monitoring of transducer and cable failure Analysis signal on BNC and terminal output Common for both channels Two independent change over relays Two independent time delays of relay function One changeover relay for transducer or cable failure Vibration Measurement Instruments VW 3 General description The transducer signal is compensated in the input amplifier to correct signal level and selected frequency range This signal is available at the front panel BNC connector and on terminals for further analysis When accelerometer or velocity transducers are used the analysis alarm and mA signals are always measured in ve
12. tor always secure the start switch with a locker and also use the emergency switch for double safety This is especially important when the machine is remote controlled VMI takes no responsibility for any accidents on people and machines VMI and our authorized dealers will take no responsibility for damages on machines and plants as the result of the use of Viber M2 measurements Even though great efforts are made to make the information in this manual free from errors and to make the information complete for the user there could be items we have missed because of the large amount of information As a result of this we might change and correct these items in later issues without further notice Also changes in the Viber M2 equipment may take place that affect the accuracy of the information VMI AB warrants the products to be free from defects in material and workmanship under normal use and service within two years from the date of purchase and which from our examination shall disclose to our reasonable satisfaction to be defective Warranty claimed products shall be returned prepaid to VMI AB for service We reserve the right to repair or to replace defective products Always try to explain the nature of any service problem in the Repair Calibration order available on the VMI web page www vmiab com preferably by email First check all natural problems like broken cables etc When returning the product be sure to indicate that
13. urthest anti clockwise position of the potentiometer 15 Fig 6 Settings on P1 amp P2 Rotation of the potentiometers clockwise will increase the delay time The Viber M2 is factory set with the potentiometers Pl and P2 to minimum delay time 3 seconds With the jumper S4 relay 1 and S5 relay 2 closed on the motherboard the time delay interval will be changed to 0 to 30 seconds instead of 3 to 30 seconds Without the jumper it is not possi ble to set the time delay below 3 seconds 9 11 Alarm Reset Function The Alarm Reset function can be set to Automatic or Manual with the straps S6 and S7 S6 controls channel 1 while S7 controls channel 2 If a jumper is open Alarm Reset is set to Automatic for the corresponding channel If a jumper is closed Alarm Reset is set to Manual In Manual mode the alarm will be active until the RESET button on the front panel is pressed In Automatic mode the alarm will be reset when the signal level is below the alarm level The Viber M2 is factory set to Automatic mode 13 y Vibration Measurement Instruments m 15 An CJ 3 Vibration Measurement Instruments J3 A and J3 B in 100mm S position 15 A jumper in position A will A jumper in position A will energize the relay coil above energize the relay coil above the alarm limit the alarm limit A jumper on S5 will change the time delay on channel 2 between 0 and 30 sec A jumper on
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