MANUFACTURER DATA SHEET Sensor:Cylinder Stroke Manufacturer: Bimba Model Number: HC PDF File: Doc_000379_Cover.pdf Covers: Doc_000297_Covers.mdb This page is intentionally left blank Bimba Position Sensing Switches Switches Bimba offers Hall Effect, Magnetic Reed and Magnetic Reed/Triac-type switches to meet a wide variety of customer needs. Bimba actuators and switches provide a reliable, cost-effective interface between the pneumatically- powered functions of applications and the electrical controls. They eliminate costly, time-consuming design and fabrication of independent electrical limit switch arrangements, and provide an aesthetically pleasing installation. The switches perform the same function as conventional limit switches. They can be used as position indicators, cycle counters, or to confirm operation. They may also be used as safety devices by allowing for operation of second- ary devices only when the actuator is properly positioned. The Switch Application Selection Guide provides information on which type of switch is suitable for a particular application. All Bimba switches are designed to sense the magnet that is used in the MRS cylinder and in other Bimba actuators that are ordered with the -M option. All are normally open switches that close when sensing the magnet. Switch mod- els differ by actuator product lines. We also offer a variety of lead lengths and optional quick connect models. Benefits of the Hall Effect Switch • LED for ease of positioning and troubleshooting • Compact • Reverse polarity and overvoltage protection • Solid state reliability — no moving parts means longer life, no contact bounce • Available with pigtail leads (in 2 lengths) or quick connect (with two cable length options) • Easy to mount on a variety of Bimba actuators • Faster signal speeds • Able to mount several switches on one actuator Switch Application Selection Guide Indicator Lights Programmable Time Relays Solenoids Motors Controllers Counters Bulbs Solid State Hall Effect Switch Yes <300mA No <300mA Yes No <300mA 110 Position Sensing Alignment Flat-1 / Flat-II / Twin Bore FO2, FO3, FO4 FOP Switches Flow Controls Couplers Square Flat-1 Square Flat-II (multiple power) (multiple position) Accessories EF1 Cylinders EF2 Cylinders Cylinders Bimba Position Sensing Switches Bimba Hall Effect Switch This is a three-wire, solid state device recommended for low current DC loads such as interfacing with a programmable controller. It provides compact, reliable sensing for virtually infinite life. An LED indicator light illuminates when switching occurs. Models are available in current sinking (NPN) and current sourcing (PNP) models. Either can be used for loads such as counters and solid state relays. Selection of sinking or sourcing models depends on the requirements of the programmable controller. How it works: In operation, a constant current is passed through the Hall sensor. When the magnet is not directly below the sensor, the current (flow of electrons) is evenly distributed across the chip. With an equal number of electrons at the chip edges, no potential difference exists at the output. (V=0, Fig. 1) When the magnet is directly below the sensor, the electron flow is distributed by the magnetic field to one side of the chip causing an imbalance in the electron concentration at the edges. This creates a potential difference, the Hall voltage, at the output. (V=V , Fig. 2) This Hall voltage is detected and amplified to control a switching output transistor. HALL I V = V HALL I V = 0 B PRINCIPLE OF HALL EFFECT (MAGNETIC FIELD PRESENT) PRINCIPLE OF HALL EFFECT (NO MAGNETIC FIELD) Sinking vs. Sourcing Typical Hall Effect Sinking Configuration (NPN) Bimba offers both sinking and sourcing Hall Effect Switch models. SINKING SWITCH Sinking switches are applied to the negative side of a load. When the switch is activated, the negative (ground) is connected, completing the circuit. RED WHITE Sourcing switches are applied to the positive side of Positive LOAD OR Positive + + PLC INPUT a load. When the switch is activated, power is (Vcc) (Vcc) BLACK Common connected, completing the circuit. (Gnd) The model needed will be determined by a number of factors, including: • Company standards. • PLC input cards. (You may have sinking input cards Typical Hall Effect Sourcing Configuration (PNP) available or your PLC only has a sinking type. Be SOURCING aware that for some PLC manufacturers, sourcing SWITCH input cards require a sinking switch or sinking input cards require a sourcing switch; check the specifica- tions to clarify.) RED WHITE Positive • Type of circuit. PLC manufacturers typically filter LOAD OR + PLC INPUT (Vcc) input modules that use sourcing field devices and BLACK Common (Gnd) use unfiltered input modules with sinking field devices. (Gnd) For Technical Assistance: 800-442-4622 111 Bimba Position Sensing Switches How to Order/List Prices For Flat Series HC QCX OPTIONAL SWITCH TYPE OPTIONAL Q = Quick Connect without cable 48” (1.2m) pigtail lead X = Include if 144” (3.66m) pigtail HC-Current Sourcing (PNP) lead needed (Not applicable QC = 2 meter mating cable HK-Current Sinking (NPN) with Quick Connect) accompanies switch QCX = 5 meter mating cable accompanies switch OPTIONS Base Model Base Quick Connect X Where Used 48" (1.2m) Model 144" (3.66m) pigtail lead Q QC QCX pigtail lead (no cable) (2m cable) (5m cable) HK,HC Flat-1 Series $31.70 $44.60 $45.90 $65.90 $75.90 *Note: 0.38 minimum stroke required for Flat-1 cylinders. To Order Cable Connectors Separately Base Model Description List Price C4 2m - straight $20.00 C4X 5m - straight 30.00 Electrical Specifications Hall Effect Switches (3 wire switches) Output Type . . . . . . . . . . . .Current sinking or sourcing Temperature Range . . . . . . . . . . . . . . . .-20° to +160°F -25° to +70°C Input Voltage . . . . . . . . . . . . . . . . . . . . . . .5 to 30 V DC For Flat-1 Series . . . . . . . . . . . . . . . . . . .-20° to +120°F Input Current . . . . . . . . . . . . . . . . . . . . . . .25 mA max. -25° to +50°C "On" Voltage Drop Turn ON Time . . . . . . . . . . . . . . . . . . .2 µ s. (microsec.) Sinking . . . . . . . . . . . . . . . . . . . . . . .0.4 Volts max. Sourcing . . . . . . . . . . . . . . . . . . . . . .1.5 Volts max. Turn OFF Time . . . . . . . . . . . . . . . . . .1 µ s. (microsec.) Output Current . . . . . . . . . . . . . . . . . . . . .300 mA max. OFF State Leakage . . . . . . . . . . . . . . . . . . .10 µA max. Power Dissipation . . . . . . . . . . . . . . . . . .300 mW max. Reverse Polarity Protected LED Indicator Over Voltage Protected See page 116 for signal repeatability and hysteresis All prices are F.O.B. Monee, Illinois and are subject to change without notice 112 Position Sensing Alignment Flat-1 / Flat-II / Twin Bore FO2, FO3, FO4 FOP Switches Flow Controls Couplers Square Flat-1 Square Flat-II (multiple power) (multiple position) Accessories EF1 Cylinders EF2 Cylinders Cylinders Bimba Metric Flow Controls: FCPM Series Bimba Position Sensing Switches Electrical Circuit Diagrams Typical Hall Effect Sourcing Configuration Typical Hall Effect Sinking Configuration for HSC Models (PNP) for HSK Models (NPN) SOURCING SINKING SWITCH SWITCH RED WHITE RED WHITE Positive Positive Positive LOAD OR LOAD OR + + + PLC INPUT PLC INPUT (Vcc) (Vcc) (Vcc) BLACK Common BLACK Common (Gnd) (Gnd) (Gnd) HC HK Basic Circuit Layout for Programmable Logic Controllers (PLC) Basic Circuit Layout for Programmable Logic Controllers (PLC) and Normally Off Relays and Solenoids and Normally Off Relays and Solenoids CAUTION: Shorting white wire to ground will damage switch CAUTION: Shorting white wire to supply voltage will damage switch 8mm Male Connector 8mm Male Connector Sinking Hall Effect Switch Sourcing Hall Effect Switch POSITIVE POSITIVE + + OUTPUT OUTPUT LOAD LOAD 4 4 – – GROUND/ 1 3 3 GROUND/ 1 NEGATIVE NEGATIVE HCQ HKQ Pin and Wire Assignments for Quick Connect 8mm Female Connector Face View of Male Connector BROWN - POSITIVE 4 1. POSITIVE 1 3 3. GROUND BLUE - GROUND 4. OUTPUT BLACK - OUTPUT For Technical Assistance: 800-442-4622 113 Bimba Position Sensing Switches Dimensions HC, HK Hall Effect Switches (inches shown, mm in parentheses) .58 1.35 .38 (34.3) (14.7) (9.6) .38 L.E.D. (9.6) 12.0 .53 (304.8) (13.5) .23 (5.8) 36" (0.9m) JACKETED .12 LEADS CENTERLINE (3.0) HALL EFFECT SENSOR HC, HK 0.58 (14.7) 0.28 (7.1) HCQ 0.17 0.38 0.38 (4.3) (9.6) (9.6) 12.0 1.35 5 0.53 (34.3) (127) (304.8) (13.5) 1.33 (33.8) 0.23 (5.8) HC■Q, HK■Q Mounting HC, HC■Q, HK, HK■Q For Flat-1 Series Cylinders and Ultran Slide Rodless Cylinders Flat-1 models ordered for position sensing (-M option) and Ultran Slide rodless cylinders ordered with track (-T option) include a special switch track. The switch includes a washer, screw and nut. Note: Hold switch firmly against cylinder body to avoid air gaps. 114 Position Sensing Alignment Flat-1 / Flat-II / Twin Bore FO2, FO3, FO4 FOP Switches Flow Controls Couplers Square Flat-1 Square Flat-II (multiple power) (multiple position) Accessories EF1 Cylinders EF2 Cylinders Cylinders Bimba Position Sensing Switches Mounting The switch mounting causes an extension outside of the cylinder diameter as shown. For Round Flat-1 Series Cylinders (inches shown, mm in parentheses) 2 G Bore Bore G Designator Switch Location 02 9/16" (14mm) 0.29 (7.4) For the M Option, the switch mounting post will be located 04 3/4" (19mm) 0.25 (6.4) in Position 2. To locate the 3 09 1-1/16" (27mm) 0.07 (1.8) 1 post in other positions, or to 17 1-1/2" (38mm) 0.02 (.5) order more than one post, 31 2" (50mm) 0.03 (.8) specify options M1, M3, or M4, or T1, T3, or T4. 50 2-1/2" (63mm) 0.02 (.5) 70 3" (76mm) 0.03 (.8) 4 125 4" (101mm) 0.00 (0) For Square Flat-1 Series Cylinders (inches shown, mm in parentheses) Square Flat-1 2 G 1 3 Bore Bore G Switch Location Designator 4 For the M option, the switch 04 3/4" (19mm) 0.365 (9.3) mounting track will be 09 1-1/16" (27mm) 0.365 (9.3) located in Position 2. To 17 1-1/2" (38mm) 0.365 (9.3) locate the track in other Square Flat-II positions, specify M1 or M4. 31 2" (50mm) 0.365 (9.3) To include additional track, 2 50 2-1/2" (63mm) 0.270 (6.9) specify T1 or T4. 70 3" (76mm) 0.300 (7.6) G 125 4" (101mm) 0.160 (4.1) 1 3 4 For Technical Assistance: 800-442-4622 115 Bimba Position Sensing Switches Hysteresis and Operating Windows Hysteresis Bimba Hall Effect switches are subject to hysteresis. Hysteresis is the difference in magnetic field strength needed to initiate switch operation versus the field strength needed to sustain switch operation. The effect is that the switch break point will be different from the switch make point in the piston travel. Operating Window The operating window is the distance the piston travels while the switch is in the “ON” state, and includes the hysteresis action. For the Hall Effect Switch, hysteresis is greater on one side of the operating window because this switch is sensitive to only one side of the magnet. For high speed equipment, the time duration of the switch signal may be critical. The time duration is a function of the operating window length and the speed of operation of the actuator. It is calculated by dividing the minimum travel in the operating window by the piston speed, taking into account the hysteresis effect. The illustrations and chart below show the operating windows for the Hall Effect Switch. MID STROKE OPERATION END OF STROKE OPERATION SW SW SW MAKE END OF BREAK MAKE POINT STROKE POINT POINT DIRECTION OF DIRECTION OF SW. ON SW. ON PISTON MOTION PISTON MOTION SW SW SW MAKE BREAK BREAK POINT POINT POINT DIRECTION OF SW. ON SW. ON PISTON MOTION WINDOW HYS HYS WINDOW HYS HK and HC For Flat-1 Series (inches shown, mm in parentheses) Cylinder Operating Window Hysteresis Repeatability Type Bore Extended Retracted Extended Retracted Flat Series All 0.230 (5.8) 0.420 (10.7) 0.035 (.9) 0.235 (6.0) ± 0.015 (.4) WARRANTY All Bimba products are warranted against defects in Bimba shall not be liable for special, indirect or workmanship or material under normal conditions and consequential damages. BIMBA GIVES NO WARRANTY, usage for a period of two years from the date of EXPRESS OR IMPLIED, AS TO MERCHANTABILITY, shipment. Your exclusive remedy in the event of such a FITNESS FOR PARTICULAR PURPOSE AS SOLD, defect is to return the product to our factory for repair, DESCRIPTION, QUALITY OR ANY OTHER MATTER replacement or refund, clearly identified by the Bimba BEYOND THAT SPECIFIED ABOVE. BIMBA DOES NOT Returned Goods Authorization Number. This Warranty ASSUME, NOR AUTHORIZE ANYONE ELSE TO does not cover products which have been subject to ASSUME FOR IT, ANY OTHER OBLIGATION OR misuse, negligence, accidents, misapplication or tamper- LIABILITY IN CONNECTION WITH THE SALE OR USE ing in a way so as to affect their normal performance. OF ITS PRODUCTS. Product enhancements resulting from our continuing quality improvement All prices are F.O.B. Monee, Illinois and are subject to change without notice. effort may necessitate changes in specifications without notice. 116 Position Sensing Alignment Flat-1 / Flat-II / Twin Bore FO2, FO3, FO4 FOP Switches Flow Controls Couplers Square Flat-1 Square Flat-II (multiple power) (multiple position) Accessories EF1 Cylinders EF2 Cylinders Cylinders Bimba Position Sensing Switches Helpful Hints • Be sure your actuator has a magnet option. Bimba has technical bulletins that describe the following situations: • Be sure to match your Hall Effect Switches to the proper circuits, i.e., sinking switches for sinking 1. Contact Protection (transient suppression for Reed circuits and sourcing switches for sourcing circuits. Switches) for inductive or capacitive load switching. • Be sure to choose the correct input voltage for the 2. "Or" logic operation for Hall Effect Switches switch ratings. connected in Parallel. • Don't try to use a switch with a low current output to 3. "And" logic operation for Hall Effect Switches drive a high power circuit. connected in Series. • If you have a high speed application, be sure your load circuitry doesn't have a high signal delay (some Call 1-800-44-BIMBA to speak to our Technical circuits have filters which cause signal delays). Assistance Center and request a copy at no charge. Glossary Actuating Time Average Average time to close contacts on a reed Operating Window See charts. The active window that the sen- switch. sor will be in the "on" state. Hall Effect Solid State switching device activated by R-C Network A filter network that combines a resistor and magnetic field. capacitor in series across a reed switch, that filters the switch from inductive kickback or Hysteresis The difference (in distance) between the transients. spot where the switch turns "on" when the piston moves in one direction, and Response Same as turn on/off time or actuating time when the switch turns "off" when the pis- average. ton moves in the opposite direction. This Reverse Polarity Protection Protects switch damage caused by switching difference occurs because it takes more the positive and negative leads. magnetic force to turn the switch "on" than it does to keep it on. Self-Commutation A condition inherent in triac switching devices. Self-commutation occurs when tran- Inductive Load The characteristic of an electrical load or sients cause the triac to momentarily turn on, device that enables it to store energy even though a magnetic field is not present. while operating and to return that energy to the circuit, as electricity, when the cur- Signal Repeatability Range at which switch will turn on or off, rent is turned off, i.e., solenoids. given the same physical switching point. Input Current The amount of current needed to power Sinking Term used for device that switches a load to switch. ground (NPN). Inrush Current Initial current draw from inductive loads. Sourcing Term used for device that switches power May be two or three times the rated hold- supply to load (PNP). ing current for such devices. Triac A solid state device used to switch inductive Kickback, Inductive Occurs when inductive loads are AC loads. switched off. This may cause transients that can damage reed switches. Turn On/Off Time The amount of time it takes to turn on or off a Hall Effect device. MRS Magnetic Reed Switch is a mechanical switch activated by magnetic field. Off-state Leakage Amount of current flow to output in the off state. For Technical Assistance: 800-442-4622 121 Notes WARRANTY All Bimba products are warranted against defects in BIMBA GIVES NO WARRANTY, EXPRESS OR workmanship or material under normal conditions and IMPLIED, AS TO MERCHANTABILITY, FITNESS usage for a period of two years from the date of ship- FOR PARTICULAR PURPOSE AS SOLD, ment. Your exclusive remedy in the event of such a DESCRIPTION, QUALITY OR ANY OTHER defect is to return the product to our factory for repair, MATTER BEYOND THAT SPECIFIED ABOVE. replacement or refund, accompanied by our Returned BIMBA DOES NOT ASSUME, NOR AUTHO- Goods Form. This Warranty does not cover products RIZE ANYONE ELSE TO ASSUME FOR IT, ANY which have been subject to misuse, negligence, acci- OTHER OBLIGATION OR LIABILITY IN CON- dents, misapplications or tampering in a way so as to NECTION WITH THE SALE OR USE OF ITS affect their normal performance. Bimba shall not be PRODUCTS. liable for special, indirect or consequential damages. Product enhancements resulting from our continuing quality improvement effort may necessitate changes in specifications without notice. All prices are F.O.B. Monee, Illinois, and are subject to change without notice. 123 For Technical Assistance: 800-442-4622 This page is intentionally left blank