VS1 Operation Manual - Electro
Contents
1. 1 Set the ALARM OVER UNDER switch as required 2 Set the TRIP POINT If the desired RMS velocity alarm value is known set the trip point to that value otherwise it can be set experimentally relative to your machine s current acceptable vibration level The following gives an example ALARM set to OVER a Set the DELAY to minimum 1 second b Start the machine to be monitored Note The VIBRATION LED should light indicating vibrations above the VS1 minimum detectable level 0 1 in s Wait for any all transient vibrations to die out c Slowly increase the TRIP POINT setting until the ALARM LED darkens if already alarmed d Slowly decrease the TRIP POINT setting until the ALARM LED begins to light This setting is your current vibration level Note These last two steps may need to be repeated Adjust the TRIP POINT slowly since there is a minimum of 1 second response time e Increase the TRIP POINT to a value proportional to the current vibration level For example if the current vibration level is 0 5 in s and you want the VS1 to alarm at 40 above that set the trip point to 0 7 in s 3 Set the DELAY This may also have to be determined experimentally depending on the duration of vibration transients to be ig nored 4 Re attach the cover tightly Note There is a 2 3s delay from application of DC power to becoming operational to allow internal circuitry to charge Free Catalog and Application Assistance GEA Visit2. us online 1 800 328 6170 ELecTRO SENSORS Wwww electro sensors com 1S09001 2000 6111 Blue Circle Drive Minnetonka MN 55343 USA Superior Systems Solutions Phone 952 930 0100 Fax 952 930 0130 Specifications LED Indicators POW CY as isssctscctsrassssicnsssecestessn ecuncterisentaaenaned Green VID ATOM ssissssssoissssssersesestessontseecsaesonssesineioantin Green indicates vibration above min detectable level 0 1 in s rms Red indicates output in alarm state Settings Ranges Alarm trip point 0 1 2 2 in s 2 5 55 mm s rms Alarm delay 1 10 seconds Alanna anaa RA Over under select switch Operational Limits Min vibration frequency 3db Max vibration acceleration 10 Hz 50 g peak NPN option 12 g peak Relay option Power Requirements 24 Vdc 18 30 Vdc 30 mA 24Vdc Note Optional 24 Vdc 130 mA power supply available consult factory Relay Relay option SPDT 5A 30 Vdc 5A 250 Vac Relay energized when powered and not alarmed AC rating Failsafe NPN Output Schematic and Possible Connections NPN Output Option Sinking resistive load Sinking inductive load externally connected to the same supply as the DC power inputs or to a different supply Useful Conversion Formulas Isolated NPN Output NPN output option GUI sd EE OE EE E TE Vo max 50 mA BV o breakdown volts Po max power over temp lto max leakage
3. VS1 Vibration Monitor User s Manual SENSING DIRECTION VS1 VIBRATION MONITOR VIBRATION ELECTRO SENSORS Part Number 990 001100 Rev E 082903 Free Catalog and Application Assistance GEA Visit us online 1 800 328 6170 ELECTRO SENSORS www electro sensors com 1SO9001 2000 Ww 6111 Blue Circle Drive Minnetonka MN 55343 USA Superior Systems Solutions Phone 952 930 0100 Fax 952 930 0130 Description The VS1 Vibration Monitor combines sensor circuitry and isolated npn or relay output into a compact NEMA 4X package It monitors the machine surface to which it is attached and alarms when vibration levels either exceed or fall below the trip point setting depending on the ALARM switch setting Operator Interface Dimensions The setting dials and switch are located under the waterproof cover Remove the cover to change settings and replace when finished Cover Removed 3 46 TRIP POINT Abhi IN S Over Ls O 2 08 VIBRATION gs p loool _ RELAY_ J Cover Attached 3 94 Loe 3 12 1 97 j e 1 66 0 55 o o Installation Orientation The VS1 senses vibration along the axis indicated by the SENSING DIRECTION arrow Orient the VS1 with the arrow parallel to the vibra tion axis to be monitored Mounting The VS1 enclosure has four mounting holes The mounting holes are the same as the cover attachment holes located directly un derneath the captive cover screws when the cov
4. er is on Remove the cover to access the mounting holes see Operator Interface Dimensions Use four 8 32 UNC or M4 metric hex socket head cap screws to mount the VS1 Rigid tight attachment is necessary for any vibration sensing device For this reason the VS1 must be securely fastened to a smooth flat surface Use all four screws mount ing with fewer can allow error causing resonance when high frequency vibrations are present Cabling The VS1 comes standard with a 10 cable When extending the cable to a longer length terminate it in an appropriate junction box with proper terminal strips The cable wires have the following color code Power NPN Output Option Relay Output Option Green Case Blue Collector Protection Cathode Blue Relay Common Red DC Power Orange Emitter Orange Relay N C Black DC Power White Collector White Relay N O Free Catalog and Application Assistance GEA Visit us online 1 800 328 6170 ELECTRO SENSORS www electro sensors com 1SO9001 2000 6111 Blue Circle Drive Minnetonka MN 55343 USA Superior Systems Solutions Phone 952 930 0100 Fax 952 930 0130 Operation Power LED Green sscsssccsseeeeees Indicates power applied to the VS1 Vibration LED Green uu Indicates vibration at or above the minimum detectable level 0 1 in s nominal Alarm LED Red sssssssssssssssessssss Indicates an alarm condition Note Alarms are not latching an alarm condition persists only while
5. over temp Failsafe 100 pA Transistor ON when powered and not alarmed Terminals Connections 6 conductor unshielded 22 AWG NPN Option Relay Option Case Case DC Power DC Power DC Power DC Power Collector Protection Relay Common Cathode Emitter Collector Relay N C Relay N O Environmental Operating Temperature Enclosure type 40 C to 65 C 40 F to 149 F Cast aluminum NEMA 4X Mechanical Weight 0 75 Ib 0 34 kg Dimensions 3 94 x 2 56 x 1 66 Specifications subject to change without notice Relay Output Schematic Relay Output Option fo Wht N O l l l l I I 1 1 Blu COM I I I I i l l l Org N C Sourcing resistive load The NPN output is electrically isolated from the VS1 DC power inputs and case The NPN output may be isolated from the VS1 DC power The relay output is electrically inputs and case Definitions CPM Machine cycles per minute f Frequency Stroke Max machine travel peak to peak Disp Peak displacement from center position Stroke 2 Formulas f frequency in Hz CPM 60 Vel rms velocity in in s 4 44 Disp f Disp must be in inches f must be in Hz Accel peak acceleration in g s 0 103 Disp f Disp must be in inches f must be in Hz Accel peak acceleration in g s 0 0231 Vel f Vel__ must be in in s rms f must be in Hz Note All fo
6. rmulas based on sinusoidal motion Visit us online www electro sensors com Free Catalog and Application Assistance 1 800 328 6170 1SO9001 2000 6111 Blue Circle Drive Minnetonka MN 55343 USA ELECTRO SENSORS Superior Systems Solutions Phone 952 930 0100 Fax 952 930 0130
7. the vibration magnitude stays at alarm levels Alarm OVER UNDER Switch Selects the alarm functionality Over Alarms while vibration magnitude is above the trip point setting Under Alarms while vibration magnitude is below the trip point setting Trip Point Dial 0 0 00 Sets the alarm level threshhold in inches per second RMS Delay Diallo eeceecssseeesssteeeeeee Sets the alarm delay in seconds An alarm occurs DELAY seconds after detecting vibration magnitude at alarm level The vibration magnitude must remain at alarm levels for at least DELAY seconds for an alarm to occur NPN Output Option The isolated NPN output is connected for failsafe operation NPN on when powered and not alarmed It operates as follows Conducting ON when VS1 is powered and not alarmed Not conducting OFF when VS1 is unpowered or alarmed Relay Output Option The isolated SPDT relay is connected for failsafe operation relay is energized when VS1 is powered and not alarmed The contacts operate as follows N C Disconnected from COM energized when VS1 is powered and not alarmed Connected to COM not energized when VS1 is unpowered or alarmed N O Connected to COM energized when VS1 is powered and not alarmed Disconnected from COM not energized when VS1 is unpowered or alarmed Settings With the VS1 tightly mounted the cover removed and 24 Vdc power applied complete the following steps
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