0044-003-01 User Guide.qxd
Contents
1. Is an increase in sensitivity required Reset switch Reset Machine Retract SET LEVEL SCREW steadily until tripped then advance 1 2 turn Tripped Switch is set 6 The vibration switch is factory set accurately to 3 g The SET LEVEL can be estimated by referring to the calibration curve in figure 6 and counting the number of turns from the factory setting Switch Calibration Horizontal at 25Hz Tums from Flush 6 5 75 8 5 9 5 10 5 11 5 12 5 13 5 5 4 3 2 1 0 1 2 Turns from Factory Setting Figure 6 Vibration Switch Calibration Curve If the factory setting is lost it can be approximated as 11 5 turns from flush 6 Functional Test To check correct set up of the vibration switch repeat set up sequence section 5 7 Maintenance There are no user serviceable parts inside the vibration switch Maintenance is not required except for periodic external visual inspection 8 Accessories 1000 026 LID ASSEMBLY TYPE MR 1000 028 LID ASSEMBLY TYPE S G003 GLAND M20 TRS C I P 171 SEAL 400 024449041 1000 027 4MM HEX DRIVER LONG Document Number 0044 060 01 EN2. be longer than the Live and Neutral wires such that failure of the strain relief will cause the Earth wire to be the last conductor interrupted To prevent water running down onto the vibration switch add a drip loop in any external cabling For ambient temperatures below 10 C use external wiring rated for the minimum ambient temperature expected 4 2 Electrical Installation Details sail 3mm hex QR J _ _ wy x4 Tie wrap wires to protect against vibration and using cable ties rated for expected ambient temperature Figure 3 Electrical Installation 4 Double Throw Change Over Single Pole Double Pole Change Over Change Over 1 1 2 2 3 3 4 4 5 5 6 6 8000 000 8010 000 8001 000 8011 000 Double Pole Single Throw On Off Normally Closed Open 8001 010 8001 020 8001 030 ao a A o N Switches are shown in their reset state Figure 4 Wiring Configuration 5 Set up Sequence No adjustment is needed if the vibration switch has been ordered preset for your application The SET LEVEL can be checked by reference to the calibration curve in figure 6 Adjust SET LEVEL so that the switch just no longer trips in normal running as follows Remove SET LEVEL CAP With machine running reset switch Tripped Advance SET LEVEL SCREW steadily 1 2 turn
3. Weatherproof Vibration Switch Types 317IMR and 3171S Installation and Operating 1 Introduction The type 3171 is a low cost vibration sensitive safety switch for the protection of rotating and reciprocating machinery It is adjusted to operate above the machine s normal running levels of vibration activating machine shut down circuits and or alarms and to switch off the machine before catastrophic failure The switch detects vibration in all directions Unbalanced forces created by failing machinery contain both the fundamental frequency and harmonics The switch responds by shutting off the machine if any components of vibration exceed the set value The switch operates as follows Mounted vertically on a vibrating machine a steel ball is held by a permanent magnet into a conical seat If the vibration of the machine is sufficient to cause the ball to detach from the magnetic field of the magnet it trips a latched lever thus releasing a micro switch plunger so the machine can be stopped In type 3171MR the ball and lever are latched by pressing the reset button manually In type 3171S the ball and lever are latched by actuating a solenoid remotely using an electrical signal or by pressing the reset button manually The SET LEVEL of the vibration switch is set by adjusting the gap between permanent magnet and ball Consult the FFE website at www ffeuk com for the latest information on applications and any new warnings that ma
4. n key for lid screws e 4mm hexagon key to adjust SET LEVEL e Wire strippers and wire cutters e 3mm flat blade torque screwdriver for terminal block electrical connections e 5mm flat blade torque screwdriver for internal protective earth terminal e Adjustable spanner to fit cable gland 3 2 Mechanical Installation Details The vibration switch must be fitted on the machine structure so that good transmission is ensured from the likely source of excess vibration The vibration switch shall be firmly fixed in the vertical orientation shown in figure 1 to a vertical surface of the vibrating machine using M5 fixings suitably resistant to vibration Transport VERTICAL Set Level Cap Plug Cable Entry M5 fixings Cap in the two places Ri R aHa L M5 fixings A in the two D LH places pal Switch Rating Label phi Figure 1 Mechanical installation to the surface of the vibrating machine 4 Electrical Installation 4 1 Introduction Do not exceed the switch contact ratings The primary switching circuit is rated at 5 Amp maximum and must be fused appropriately in line with the protected machine s mains supply and isolation device The DC operated solenoid has a duty cycle of 25 It is advised that a time limiter or mono stable device be fitted in line to automatically disconnect the solenoid supply after 30 seconds When connection is by a cord the Earth wire connection must
5. y affect installation or safety 2 Warnings and Cautions Read all Warnings and Cautions before Installation and Set up 2 1 Warnings Risk of electric shock e For electrical safety the vibration switch must be earthed e For your own safety disconnect all electrical power to the vibrating machine and ensure the vibrating machine cannot operate during installation Follow all safety warnings of the machine manufacturer e Type 3171S vibration switches use a solenoid supply excepted circuit completely separate from the primary switching circuit rated at 5A maximum It must be fused appropriately and have an in line isolation device that is identified both at the vibration switch and isolation device 2 2 Cautions e To avoid corrosion inside the vibration switch keep enclosure sealed before and after installation 3 Mechanical Installation 3 1 Introduction e Installation of the vibration switch shall only be carried out by qualified personnel e Remove vibration switch from carton e Vibration switch is factory set to 3 g unless a preset switch has been ordered e To reduce the risk of damaging internal components and wiring installation and wiring must be performed within a temperature range of 10 C to 50 C e Do not allow moisture or other airborne contaminants inside the switch as they can cause corrosion e When closing the lid ensure the seal is not lost or damaged The following tools will be needed e 3mm hexago
Download Pdf Manuals
Related Search