System Components. Motion Control.

Transcription

1 System Components Motion Control

2 Contents 8. Motion Control 8.. Rotary Limit Switches 8.. Proximity and Contact Limit Switches Encoders Position Indicators Control Panels 0

3 8.. Rotary Limit Switches 8... RLS5 Rotary Limit Switches 8... RLS5 Rotary Cam Limit Switch Overview Power Jacks products are used in a wide spectrum of industries for lifting, positioning and materials handling applications. All of which require a level of motion control. Power Jacks RLS5 series geared cam limit switches are ideal for use as: End of travel limit switches to stop or reverse an actuator system. Mid travel signal providers to allow integration of other process operations. And allow integration of other feedback devices such as potentiometers and encoders inside their compact housing. RLS5 Features include:. Useable revolutions from 4 to to 8 position limit switches. 3. Enclosure IP as standard. 4. Mounting options for B4 face, B5 flange and B3 foot mounted. 5. Available in three voltages 50 VAC, 4 VDC and 80 VDC.. Modular design to allow a wide variety of options. 7. Operating temperature: 40ºC +80ºC Illustrated Examples RLS5 with 8 Limit Switches and foot mounting With potentiometer With pulse generator and B5 flange mount Analogue feedback systems, e.g. potentiometers, can easily be fitted. The same applies to the pulse generator used as a motion indicator for actuator systems. Gear Part With motorised adjustment The switching points for all contacts can be changed commonly by block adjustment An electric adjusting motor can be retrofitted. With absolute encoder For safety disengagements positive opening switching contacts are used: for position or incremental encoders to offer highest safety and finest resolution.

4 8... RLS5 Features and Options The RLS5 geared cam limit switches are universal mechanical switching devices that have been designed for use in conjunction with cam discs on a specific angle of rotation for the indication of a large number of shaft revolutions. These cam discs serve to operate mechanical contacts. Design features include: Low Friction Planetary Gearing with irreversable, selflocking worm adjustment of the cam discs. Fixed Cam Adjustment in the housing. The adjusting worms of the cam discs are arranged so that they can be accessed from the same direction as the contact connections for optimal accessibility in confined conditions. Adjustment is possible during operation. The simplicity and accuracy of the cam adjustment is unsurpassed. Block Adjustment of all switching contacts jointly is made possible by a single adjusting worm (black) without the switching points of individual switching contacts being altered with respect to each other. Large Cam Disc Diameter for good adjustability and high switching point repeat accuracy. Reinforced Polycarbonate Housing as standard with IP protection and a wide operating temperature range. Modular Design allows adaptation to suit individual requirements via intermediate pieces. Maintenance Free gearbox components. Options Position indicating plate for block adjustment. Potentiometer feedback drives ( available) to suit single and multiturn potentiometers. Pulse transmitter with 50 pulses per revolution. Anticondensation heater to prevent condensation and excessively low temperatures in switches. Motor driven contact block adjuster. Mounting for encoders (incremental and absolute). Extended drive shaft for feedback devices. Aluminium housing for harsh environments and fitment of large and heavy encoders, IP 5 enclosure. Cam discs with a 40 O cam angle can be provided at no extra cost. Standard is 5 O cam angle. Other angles can be manufactured at extra cost on request. Note different cam angles alter the number of useable revolutions from the standard. The 40 O cam has less useable revolutions than a 5 O cam, consult Power Jacks. Stage Technology Tested Unit can be provided to VBG 70 with test certificates. A 40 O angle cam disc is used for this application RLS5 Coupling Note The ideal drive for the limit switch is transmitted by torsionally stiff, flexible coupling with low axial and radial restoring forces. Thereby misalignment and axial displacement are balanced. For radial load rating and coupling advice consult Power Jacks Screw Jack (Mechanical Actuator) Mounting The RSL5 rotary limit switches are ideal for screw jack mounting and actuator systems in general to act as position switches. The switches can be used as over travel protection switches, operation/routine triggers, speed change signals, or other process signals. Symmetric (cubic) Screw Jack (refer section...) Metric Machine and Ball Screw Jack (refer section...3.) For actuator (screw jack) systems refer to section and/or consult Power Jacks. 3

5 RLS5 Performance Gear Size Usable revs. selected Usable revs. theoretical with 5 cam discs Gear Ratio Input/ output stage No of interm stages x 4.85 x 4.85 x 4.85 x 4.85 x 4.85 x x x x x x x x x x 4.85 x 4.85 x 4.85 x 4.85 rev. of the drive shaft corresp. to an ang. motion of cam disc = Change over contact reset rev. at driving shaft Max drive speed (RPM) Min drive shaft speed (only for change over contact) * * * * Caution! Due to the slow actuation speed of the switching contacts caused by the high gear reductions, the changeover behaviour of the contacts is affected negatively. From gear size it is therefore recommended to use only the normally closed contacts of the switches. Before using analogue feedback systems (e.g. potentiometer) please consult our technical department Switching Contacts The contacts can either be connected through screw terminals for a cable cross section of 0.75 mm to.5 mm or through flat plugs.3 x 0.8 mm or through a printed card with cage tension spring terminals for a cross section of 0.4 to.5 mm. For contacts with flatplug connection, insulated flat plug receptables must be used at voltages above 5V AC and 0 VDC. Contact designation 9 97 ➁ 99L 99P 9 Contact type Changeover switch Changeover switch Changeover switch Changeover switch Normally closed contact Contact material Silver Gold Silver Silver Silver Switch actuation Snap action Snap action Snap action Snap action Snap action Type of contact connection Screw terminal Screw terminal Printed card Flat plug.3 Screw terminal Positive opening to VDE00 part 00 from 7.9 EN0947T5 Yes Yes Yes Yes Yes Switch Rating AC 4V DC 80V DC Amps Volts Amps Amps Mec. life in millions of switching operations ➀ DC switching capacity with T = 0 ms (pure resistive load) DC switching capacity with inductive load on request ➁ Contact 97 for SPC applications (gold contacts) Change over switch L 99P (,,...) (4, 4,...) 4 (,,...) (,,...) (,,...) Normally closed contact 9 4

6 8... RLS5 Dimensions 8... RLS5, B4, Face Mounted Blanking Plug PG 8 PG 8 M x 0 Deep Ø40 0. Ø8 h9 3 pg x PG O 04 ±0. 30 O L 8... RSL5, B3, Foot Mounted L Blanking Plug PG 8 PG Ø8 h9 3 pg x PG ±0. 30 O 30O

7 RLS5, B5, Flange Mounted Blanking Plug PG 8 PG Ø0 Ø0 0. Ø8h9 3 pg x PG ±0. 30 O 59.4 x 30 O 4 L General Features:. Housing made of glass fibre reinforced polycarbonate with IP degree of protection.. Modular design enables optimal space utilisation. Special types available on request consult Power Jacks. 3. Overall lengths can be extended as required with 5 mm wide intermediate pieces Dimensions Size L Model Gear Size L (mm) Contacts Number of Intermediate Pieces L (mm) 4 Contacts Contacts 8 Contacts Number of Intermediate Pieces L (mm) Number of Intermediate Pieces L (mm) Number of Intermediate Pieces 4.NM.5NM NM BM 9BM 48BM BM 5BM 05BM BM 540BM 880BM BM 88BM 3735BM BM 9800BM 000BM Note. More than 8 contacts on request, consult Power Jacks.. Dimensions with more than 8 contacts and with special executions, e.g. potentiometer on request.

8 8... SKA Rotary Limit Switches 8... SKA Rotary Limit Switch Features Limit Switches. Available in three voltage ratings 50, 480 or 00 Volt. Available in three gear ratios. Sturdy and compact. Constructed of corrosion resistant materials, with housing of anodised aluminium. Simple to adjust. Two microswitches, one for up/stop and one for down/stop, are activated by the adjustable limit switch nuts which travel laterally when the internal screw is rotated through gear reduction. Enclosure IP5 (NEMA4). Lifetime lubricated. Operating temperature range: 9ºC +5ºC (0ºF +50ºF). Designed especially for all Power Jacks machine screw and ball screw actuators. Bolts on to all Power Jacks actuators except 5kN and 0kN Metric, /4, / and Ton Imperial and MicroMiniature actuators were the limit switch has to be mounted separately and shaft driven. Optional 4position limit switch available. Consult Power Jacks for details. Screw Limit Switch Nut Microswitches Input shaft Nut Dia 7

9 8... SKA Limit Switch Ratings Limit Switch Ratings Model No. SKA000A SKA000B SKA000C Max Voltage Max Amps AC DC AC DC Limit Switch Worm Gear Ratios Gear Ratios 0: 0: 40: Max Input Revolutions SKA000A SKA000B SKA000C Note A and B models are SPDT; C model is circuit, double break SKA Rotary Limit Switch Dimensions Ø7 mm Thro Hole Ø Note. All dimensions in mm unless otherwise stated.. Dimensions subject to change without notice. 8

10 SKA Limit Switch Screw Jack (Mechanical Acutator) Mounting The SKA rotary limit switch is an ideal compact limit switch for mounting on a screw jack (mechanical actuator). The units are typically used for over travel protection. The SKA units can be installed with either close or extended mountings. Close mounting has to be done at the factory but extended mounting can be done in the field. For full details on screw jack (mechancical actuator) mounting refer to the following options: Metric Machine or Ball Screw Jacks refer section...4. / N.P.T. 3 9/ /4 5/8 Imperial Machine or Ball Screw Jacks refer section Ordering the Right SKA Limit Switch To ensure that the limit switch has sufficient travel capability for the actuator unit, use the following formula: Max raise of actuator model in mm (inches = Max. Input Revolutions Turns of Actuator Worm per mm (inch) of Raise Note For watertight connection, use a weathertight connector and sealant around the threads. Limit switches will be damaged if over travelled. For shipping purposes, the 0.5 NPT hole is closed with a plastic plug, which is not water tight SKA Electric Limit Switch Specifications Caution: Disconnect powerbefore making any adjustment. Check drift before adjusting limits. 3 Remove screw A and nut guide keeper B to adjust limits. Wiring Diagram "A" & "B" Model Wiring Diagram "C" Models 4 Run actuator unit to desired limit. 5 Rotate appropriate nut until switch clicks, then turn / turn more. C B A B A Replace A and B. 7 Run actuator unit to the other limit. 8 Repeat steps, 4 and 5 to adjust this nut. NC NO NO NC NO NC NC NO Slight adjustments may be necessary. See chart below for notch adjustment value. Note NO = Normally Open NC = Normally Closed Electric Limit Switch Specifications Model No. SKA000A0 SKA000A0 SKA000A40 SKA000B0 SKA000B0 SKA000B40 SKA000C0 SKA000C0 SKA000C40 Max.Voltage Max. Amps AC DC AC DC Max. Worm Rev Max. Raise 095/TPU 90/TPU 4380/TPU 750/TPU 500/TPU 3000/TPU 75/TPU 350/TPU 700/TPU TPU = Turns Per Unit of raise of actuator model, where Unit = millimetre or inches. Max. Allowable Drift 4/TPU 48/TPU 9/TPU 9/TPU 57/TPU 5/TPU 38.5/TPU 77/TPU 54/TPU Notch Adjustment /TPU /TPU 4/TPU /TPU /TPU 4/TPU /TPU /TPU 4/TPU 9

11 8.. Proximity and Contact Limit Switches 8... Proximity Sensors Inductive Proximity Sensors. Noncontact, so no wearing parts. Wire sensor for either Normally Closed (NC) or Normally Open (NO) switching. Long sensing range. Rugged onepiece Metal housing. Optical setting aid with LED colour settings: Red LED indicates just in sensing range. Yellow LED only indicates within 80% safe sensing range. M Plug in connection for fast changeability. M sockets available straight or angled with 5 m cable. Full 30 visibility for switching with 4 yellow LED s at 90 offset. Flush face as standard, nonflush available. Housing plated brass, Stainless Steel available on request. Operating voltage 0 30 VDC. Enclosure IP7. Operating temperature 5 C +70 C Other types available on request. Consult power Jacks. Ideal for screw jack or linear actuator mounting. Sensor Sensing Range (flush) Overall Length, L L M 4 mm mm M8 8 mm 7 mm M30 5 mm 7 mm Model Electrical Design Output Operating Voltage (V) Current Rating (ma) Minimum Load Current (ma) Shortcircuit Protection Reverse Polarity Protection Overload Protection Voltage Drop (V) Leakage Current (ma) Operating Distance (mm) Switchpoint Drift (%/Sr) Hysteresis (%/Sr) Switching Frequency (Hz) Correction Factors (approx.) Mild Steel Stainless Steel Brass Aluminium Copper Function Display Switching Status LED Setting Aid LED Operating Temperature ( C) Protection EMC Housing Material Connection M M8 DC PNP/NPN normally open/closed programmable 0 3 DC 00 4 Yes Yes Yes < 4. < yellow (4 x 90 ) red IP 7 EN 09475; EN 550 class B brass; special coated; COPC M connector M L+ 4 L L L 0

12 GN YE motion control 8... Compact ElectroMechanical Contact Limit Switches 8... Compact Contact Limit Switch Overview Compact electromechanical limit switch. Study metal enclosure Precabled unit. High end enclosure protection IP7. Available with plugin connector. Other sizes and acutation heads are available on request. Consult Power Jacks. Ideal for scew jack or linear actuator mounting. CLSRPTL (a) CLSRPTT (b) 8... Compact Contact Limit Switch Technical Data Item Housing Precabled Switch type Description Metal, compact hosuing, totally enclosed and sealed m PVC cable 5 x 0.75mm (other cable lengths available on request) Single pole, changeover, snap action Switch actuation Steel Roller Plunger a Lateral Cam Approach b Travers Cam Approach CSLRPTL CSLRPTT Max actuation speed 0.5 m/s Mechanical durability 0 million operating cycles Ambient temperature Operation Storage 5 C +77 C 40 C +70 C Product conformity Enclosure Operating characteristics Insulation voltage IEC9475 IP7 AC 5; B300 (UE = 40V, le =.5A) DC 3; R300 (UE = 40V, le = 0.A) Ui = 300V BKWH BU BK BN Compact Contact Limit Switch Dimensions 4 Ø0. Ø0. 4 E M x 35.4 M x E () 5 () Note. All dimensions in mm unless otherwise stated.. Dimensions subject to change without notice. 3. For dimensions of other switches consult Power Jacks. 4. For a full switch data sheet consult Power Jacks. E = 8 mm Max, Clearance Diameter Ø.5 mm () = Ø8 mm Cable

13 8..3. Safety Related ElectroMechanical Contact Limit Switches Safety Related Contact Limit Switch Overview Positive break Normally Closed contacts will not stick or weld shut. Watertight design to IP7 washdown requirements. Rugged corrosion resistant housing tolerants hostile environments. Safety system approved. Thermoplastic enclosure. Double insulated. Snap action with positivebreak Normally Closed contact, approved for use in safety systems. Wiring compartment. Alternative actuators heads are available on request. Consult Power Jacks. Actuator heads can be repositioned in steps 4 x 90 Good resistance to oil and petroleum spirit. Actuating force: Min. 9 N. Positive break force: 9 N. Actuating speed with actuating angle 30 to switch axis. Snap action: Min. 0 mm/min, max. m/s. Cable entry: Long Body cable entry, at end. Short Body cable entries from sides. Ideal for screw jack or linear actuator mounting Safety Related Contact Limit Switch Specification Feature Description Standards IEC/EN 09475; EN 088; BGGSET5 Design EN Enclosure material Glassfibre reinforced thermoplastic, selfextinguishing Protection class IP 7 to IEC/EN 059/DIN VDE 0470 Contact material Silver Contact type Changeover with double break Zb, NC contacts with positive break Switching system A IEC 09475; B BGGSET5; snap action, NC contacts with positive break Termination Screw terminals for max..5 mm cables (including conductor ferrules) Rated impulse withstand voltage U imp kv Rated insulation voltage U i 500 V Thermal test current I th 0 A Utilisation category AC5; DC3 Rated operating current/voltage I e /U e 4 A/30 VAC;.5 A/400 VAC; A/500 VAC; A/4 VDC Max. fuse rating 0 A (slow blow); A (quick blow), A (slow blow) as positive break position switch Ambient temperature 30 C +80 C Mechanical life 0 million operations Switching frequency Max. 5,000/h Switching point accuracy Actuating speed ** Min. 0 mm/min Contact break for complete stroke x mm Bounce duration < 3 ms Switchover time > 5.5 ms ** For the switch plunger. Note. Technical Data subject to change without notice.. For a full set of limit switch details consult Power Jacks.

14 Safety Related Contact Limit Switches Dimensions Long Body F M8 x Ø 30 Pg Short Body F M8 x Pg Switch Contacts/Travel Snap Action NO NC 3 4 0,5 p Note. All dimensions in mm unless otherwise stated.. Dimensions subject to change without notice. 3. For dimensions of other switches consult Power Jacks. 4. For a full switch data sheet consult Power Jacks. 3

15 8.3. Encoders Incremental Encoders Incremental Encoder Features Simple zeropulse assignment directly on the Encoder by pressing a button. Long service life of the LED by using automatic light regulation. Maximum reliability using optoasics with chiponboard technology. Any number of desired lines from 89. RS4 or pushpull output drivers. Servo flange for mm solid shaft. Face mount flange for 0 mm solid shaft. Connector or cable outlet. High degree of protection up to IP. Interchangeable collets for hollow shaft diameters from Ø Ø5 mm and Ø/4 Ø/ inch. Screw Jack and Electromechanical Linear Actuator mounting kits available. Consult Power Jacks for details Incremental Encoder Dimensions Hollow Shaft Standard BLIND hollow shaft sizes =, 8, 0,, 5 mm. Standard THROUGH hollow shaft sizes =, 8, 0, mm.. For Through hollow shaft dimensions and cable outlet dimensions consult Power Jacks. 7 mm.7 mm 3 mm PCD 3.5 mm 0 mm Dia mm mm 0 mm 3.3 mm 3. mm mm 3.5 mm Dia 5 mm Dia (F7) 30 mm Max Shaft Length 3.5 mm mm Dia mm Dia 5 mm Min Shaft Length mm Note. Dimensions in mm unless otherwise stated.. Dimensions subject to change without notice Incremental Encoder Dimensions Solid Shaft For solid shaft encoder dimensions please consult Power Jacks. Standard solid shaft sizes: Flange mount = Ø0 mm Servo flange mount = Ø mm 4

16 Incremental Encoder Technical Data Feature Description Number of lines (Z) 89 Output driver RS 4 + pushpull outputs Mass (kg) Solid shaft and hollow shaft approx. 0.3 Moment of inertia of the rotor (gcm ) Face mount with 0 mm shaft 54 Servo flange with mm shaft 48 Through hollow shaft see Fig. Blind hollow shaft see Fig. Measuring step (Degrees) 90/number of lines Reference signal Number Position 90 or 80 electrical,logically linked to K and K Error limits (Degrees) Binary number of lines Nonbinary number of lines 0.04 Measuring step deviation (Degrees) Binary number of lines Nonbinary number of lines 0.0 Max. output frequency (khz) RS 4 80 Pushpull output 00 Max. angular acceleration (RAD/S ) 5 x 0 5 Max. operating speed (MIN ) Face mount and servo flange with shaft seal 000 Face mount and servo flange without shaft seal* 0000 Hollow shaft designs 3000 Operating torque (Ncm) Face mount flange 0 mm shaft typ. 0.3 Servo flange mm shaft typ. 0. Through hollow shaft typ.. Blind hollow shaft typ. 0.4 Startup torque (Ncm) Face mount flange 0 mm shaft typ. 0.4 Servo flange mm shaft typ. 0.5 Through hollow shaft typ.. Blind hollow shaft typ. 0. Permissible shaft loading, Radial 0 Solid shaft (N) Axial 0 Permissible movement of the Static radial movement ±0.5 Drive element for hollow shafts (mm) Dynamic radial movement ±0. Static/dynamic axial movement ±0.5 Bearing lifetime (Revolutions) 3. x 0 9 Working temperature range ( C) Storage temperature range ( C) Permissible relative humidity (condensation not permitted) EMC to EN 5008 and EN 5008 Resistance to shocks (DIN IEC 8 Parts 7) (g/ms) 90% 50/ Resistance to vibration (DIN IEC 8 Parts ) (g/hz) 0/0 50 Protection class, Solid shafts Connector outlet with mating connector fitted IP 5 Blind hollow shafts Cable outlet IP Through hollow shaft IP 4 Operating voltage range see output driver Noload operating current 0 3V typ. 00 ma 5 V typ. 0 ma Operation of zeroset (only with shaft stationary) 00 ms Initialisation time after power on 40 ms * In case, that shaft seal has been removed by customer. Note. Technical Data subject to change without notice. mm Figure.8 mm Figure gcm gcm 5

17 8.3.. Absolute Encoders Absolute Encoder Features Rugged, magnetic pickup system. Rotary multiturn absolute encoder with integral gearbox, therefore a battery is not necessary. Basic resolution max. 89 steps, 89 revolutions. SSI, 5 bit (Synchronous Serial Interface). RS 4 configurable interface. Zero set push button. Electronically adjustable configurable interface. Compact dimensions. Highly shockproof and vibrationproof. High degree of protection IP 7. Connector or cable outlet. Servo flange for mm solid shaft. Face mount flange for 0 mm solid shaft. Blind hollow shaft: max. shaft diameter 5 mm. Option of using interchangeable collets, diameters from to mm, and /4 inch and / inch can be realised. Easy to install and no coupling needed. Screw Jack and Electromechanical Linear Actuator mounting kits available. Consult Power Jacks for details Absolute Encoder Dimensions Hollow Shaft 7 mm 3 mm P.C.D. 3.5 mm 73 mm 0 mm Dia mm 3 mm 0 mm 3.3 mm 3. mm mm 3.5 mm Dia 5 mm Dia (F7) 30 mm Max Shaft Length 3.5 mm 4 mm Dia mm Dia 5 mm Min Shaft Length mm For cable outlet dimensions consult Power Jacks. Note. Dimensions in mm unless otherwise stated.. Dimensions subject to change without notice Absolute Encoder Dimensions Solid Shaft For solid shaft encoder dimensions please consult Power Jacks. Standard solid shaft sizes: Flange mount = Ø0mm. Servo flange mount = Ømm.

18 Absolute Encoder Technical Data Feature Shaft Type Description Solid Shaft with face mount/servo flange Blind Hollow Shaft Communication type Programmable code type Programmable code direction SSI (Synchronous Serial Interface) 5bit Gray / Binary cw/ccw Shaft Size (mm) Ø or Ø0 Ø Ø5 Number of steps per revolution Number of revolutions Measuring step (degrees Error limits (degrees) Repeatability (degrees) ± Operating speed (min ) Position forming time (ms) Max. angular acceleration (rad/s ) x 0 5 Moment of inertia of the rotor (gcm ) Operational torque with shaft sealing ring (Ncm) Operational torque without shaft sealing ring (Ncm) 0.3 Startup torque with shaft sealing ring (Ncm).5. Startup torque without shaft sealing ring (Ncm) 0.5 Maximum shaft loading radial/axial (N) 300/500 Permissible shaft movement of the drive element Radial static/dynamic (mm) ±0.3/±0. Axial static/dynamic (mm) ±0.5/±0. Bearing lifetime (revolutions) Working temperature range ( C) Operating temperature range( C) Storage temperature range ( C) Permissible relative humidity (%) 3. x Mass (kg) EMC Resistance to shocks in the mounted state (DIN IEC 8 part 7) Resistance to vibration in the mounted state (DIN IEC 8 part ) Degree of protection according to IEC 059 With shaft sealing ring EN 5008 part and EN 5008 part 00/(ms) 0 / (0 000 H z ) IP 7 IP 7 Without shaft sealing ring and encoder flange not sealed IP43 IP43 Without shaft sealing ring and encoder flange sealed IP5 Operating voltage range (VDC) Recommended supply voltage (W) Initialisation time (ms) 050 (from the moment the supply voltage is applied, this is the time which elapses before the data word can be correctly read in.) Signals connection way connector, potentialfree with respect to housing. Interface signals Clock+, Clock, Data+, Data SSI max clock frequency: MHz i.e. min duration of low level (clock+): 500 ns. SET (electronic adjustment) CW/CCW (step sequence in direction of rotation)»h«active (L V; H 0 Us V)»L«active (L 0.5 V; H.0 Us V) Note Technical details subject to change without notice. 7

19 8.4. Position Indicators Digital Position Indicators Programmable Digital Position Indicator T735 For use in positioning applications with Power Jacks actuators. Displays position of lifting screws in increments of 0.0 mm or Brilliant 8.5 mm high Dual colour display. Red or Green user defined e.g. Green normal operation and Red position limit reached. UserFriendly interface programmable from front panel via four rubber keys with help function on secondary 7 mm high display. Nonvolatile memory retains all programmed information and count value in the event of power loss. Two adjustable up/down output limits (presets), with a 0 ± range, can act as limit switches. Five digit input scaling , programmable decimal point location and lead zero blanking. Display convertible to metric, imperial or other units of measurement. For position indication on actuator applications Power Jacks recommend feedback from a shaft encoder for precise, reliable and maintenancefree operation. Programmable front panel functions may be locked out to prevent unauthorised adjustment. Reset capability allows reset to zero from front panel. Inputs Count inputs channels A and B ideal for encoder connection. Capable of TTL, 30V DC max. at 0 khz. Digital inputs terminals (NPN) can be used to activate preconfigured functionality e.g. remote reset and security mode. Outputs NPN outputs activated by each preset. Two red LED s on panel indicate activation. Relay outputs (Normally Closed or Open) activated by each preset. Sensor power supply VDC (unregulated), 5 ma max., ripple < 0.5V. User Parameters Up/down travel limits (presets). Voltage/Current output definition and scaling. Calibration factor. Serial communication settings. Decimal position. Display colour settings. Reset value (default is zero). Preset lock on/off. Filter speed 0, 00 or 0 khz. Help display on/off. Front panel reset enable/disable. Power supply 90 4 V AC 50/0 Hz or 0 50 V AC/DC. DIN housing 48 x 9 mm, mounting depth 00 mm. Panel mm x mm, mm max. thick. Operating temperature 0 C +55 C. Relative humidity 0% 90%, noncondensing. Protection front panel IP. CE marked and safety to DIN EN 00 part. Example Illustration Encoder Options AntiRotation Pin Linear output 0/40mA, 0/5 V, 0/0 V, 0 bit resolution. Protective Cover RS485 Serial interface. Open ASC, Masterslave Encoder up to 99 zones. (Hollow Shaft) The position indicator can be furnished as a complete actuator positioning kit which includes digital position indicator, incremental shaft encoder with flying lead or connector and cable (variable cable length available), actuator coupling and worm shaft adapter (for installing the encoder) and mounting bracket. Electrical connections are made at the rear to the unit to terminal strips. 50 kn Metric Actuator Drive Shaft Adaptor Plugin connector and cable Position Indicator 8

20 8.4.. Analogue Postion Indicators Transducer SKA00T Remote Screw Position Indicator The SKA00T position transducer is designed to mount on the end of any SKA000T limit switch. Its major component is a potentiometer which has a slider tap and a tap at each end of the element. Gear ratios of 0:, 0: and 40: allow for a wide range of raises. Total resistance of element is 500 ohms. Other resistance s are available on special order. Consult Power Jacks for additional information. B 7/8" 7/8" 9/3" Dia Three Holes 9/3" 9/3" Worm Worm Shaft 9/3" 7/8" A CCW 9/3" 7/3" 7/8" 7/8" A S CW B /" Section BB 3 3/" ±/" STD /" NPT Worm Gear (40 mm) /4" /4" /" CCW CW Potentiometer (0 Turn) Housing.5" 3 /8".300" Dia S (Slider) CCW and CW refer to worm shaft rotation as viewed from slotted end. Section AA Power Rating: W at 40 C, 0 W at 0 C, Total Resistance = 500 ohms Note. Included with each position transducer are the following mounting parts: 3 socket head cap screws. 3 lock washers. (position transducer shipped assembled in separate package to be installed at site by customer.). Transducer supplied with black anodised finish as standard. Position transducer available in following models: Model No. SKA00T0 SKA00T0 SKA00T40 Gear Ratio 0 : 0 : 40 : Max. Turns Transducer Worm Shaft

21 motion control 8.5. Control Panels Power Jacks offer control systems for machine screw and ball screw actuators. These control panels provide the option of jogging (inching), or maintained operation, when specified as part of a Power Jacks linear positioning system. The control panels are built to international standards to individual customer requirements with numerous options available, consult Power jacks for details Example of Actuator Control System Two mechanically linked Symmetric actuator systems are electronically synchronised for speed and position control using the PowerMAX 5000 frequency converter with integral control card. The PowerMAX 5000 controls the systems by controlling the motion of each motor comparing actual and required performance via a closed feedback loop. This is provided by the encoders in each motor feeding back direct to the PowerMAX Each actuator system is referenced from a datum point signalled by the RLS5 limit switch on each system. The RLS5 also provides end of travel limits that are installed for safety. Each frequency conver ter has an integral motion control card, which are linked together and arranged in a masterslave relationship for control purposes. This type of system is used where mechanical links to all linear motion components are not possible and where complete motion control is required for a specific process. For example a platform lift where a series of precise positions are required along the actuators stroke where the platform must stop for a specified time with variable speeds at the end of each stroke and a certain number of cycles per complete operation. All of which can be programmed into the unit with key user parameters accessible via the control keypad. For advice on specifying the best solution for your application consult Power Jacks Ltd. RLS5 limit switch provides extreme end of travel limits for each actuator system and a datum reference point for position control. PowerMAX 5000 Frequency Converter with integral motion control card. Two bookstyle units linked to sychronise a axis system for speed and position control. Neeter Drive Spiral Bevel Gearbox AC motor with integral brake and encoder Symmetric translating screw actuators mechanically linked in a two actuator system. 0 Spacer coupling (self supporting)

22 PRECISION SCREW JACKS. ELECTRIC LINEAR ACTUATORS. PLANETARY ROLLER SCREWS. SPIRAL BEVEL GEARBOXES. Power Jacks are an industry leader in the manufacture of quality industrial lifting, positioning, material handling and power transmission equipment. Our products are supplied globally to most industry sectors including nuclear, water, oil & gas, chemical, defence, steel, aluminium, automotive and others. DESIGN WITH POWER Power Jacks Ltd Balmacassie Commercial Park Ellon, AB4 8BX Scotland (UK) Tel: +44 (0) FM 380 All information in this document is subject to change without notice. PJBSCMotionControlEN0