CSDA1BA

CSLA1CD ETC1 | Alldatasheet

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Solid State Sensors CS Series Current Sensors FEATURES APPLICATION . © Digital or linear output Variable speed motor controls @ AC or DC current sensing Automotive diagnostics (battery drain q @ Through-hole design detector) © Fast response time @ Ground fault detectors © Output voltage isolation from input @ Motor overload protection @ Minimum energy dissipation Current monitoring of electric welders @ Maximum current limited only by © Ring transfer relay in telephone conductor size systems B Adjustable performance and built-in e Energy management systems temperature compensation assures Protection of power semiconductors r reliable operation © Control system diagnostics ® Accurate, low cost sensing © Operating temperature range —25 to 85°C OPERATION MICRO SWITCH CSseriessolid statecur- is directly proportional to the current ADJUSTABLE LINEAR CURRENT rent sensors monitor either alternating passing through the conductor. Thus, SENSORS (AC) or direct (DC) current. This series in- _ there is a direct relationship between the | MICRO SWITCH offers two families of lin- cludes a wide assortment of devices output voltage of the current sensor and _ ear current sensors with adjustable offset ranging from digital output current detec- the level ofinput current. The waveform of _ voltage and sensitivity. Both families uti- tors capable of sensing a few hundred this output voltagewilltrackthe waveform lize the previously described linear cur- milliamps to linear sensors capable of of the measured current. The through- _ rent sensors mounted to a small printed monitoring over onethousandamps. The _ hole design electrically isolates the sen- _ circuit board containing additional circui- entire family of CS current sensors pro- sor andinsures thatit willnotbe damaged ___ try. The adjustable feature enables the us- vides a means of accurate low-cost cur- by overcurrent or high voltage transients. _ er to define the exact range of operation. rent sensing. The offset voltage and sensitivity are con- LINEAR CURRENT SENSORS: trolled by two trimpots soldered to the If one of the following listings is close, but MICRO SWITCH CS series linear current _ printed circuit board. These sensors are does not quite meet the application re- sensors incorporate our 91SS12-2 and _ratiometric. quirements, please contact your local MI- SS94<A\\1 linear output Hall effect transduc- CRO SWITCH Sales Office. Our building er (LOHET™). The sensing elementis as- DIGITAL CURRENT SENSORS block approach allows easy customiza- sembled in a printed circuit board mount- Each MICRO SWITCH CS series digital tion to meet most requirements. able housing. This housing is available in current sensor provides a logic level out- four configurations (as shown in mount- _ put that changes from approximately Vec Current sensors monitor current flow. ing dimension Figures 1, 1a,2,and 2aon to 0.4 volts when the sensed current ex- Digital sensors produce a digital output page 39). Normal mounting is with 0.375 ceeds the operate point (the exception signal. Linear sensors produce an analog _ inch long 4-40 screw and square nut (not + being the CSDB1CC which changes from output signal. When these signals have provided) inserted in the housing. The 0.4 volts to Vcc when the operate point is reached a predetermined level, the con- combination of the sensor, flux collector, exceeded). Each digital sensor will oper- trol system logicis instructedto performa and housing comprises the holder as- ate on AC or DC current, but the output function. The digital signal with its logic sembly. will turn off at every zero crossing when level output may sound an alarm, start a sensing AC current. motor, open a valve, or shut down a_ When sensing zero current the output pump. The linear signal duplicates the voltage of the current sensor is approxi- Note: Operate and release currents are waveform of the current being sensed mately equalto one halfofthe supply volt- specified in Amps-Peak. When monitor- and isidealfor use asafeedbackelement age (Voffset - 0.5 Vcc). CS series linear ing AC current using a digital sensor, tocontrol a motor or regulate the amount current sensors will sense current in both peak values should be used. Multiply the of work being done by a machine. directions. Current flow in one direction RMS values by 1.414 to obtain the peak will cause the output voltage to increase value. Some CS current sensors utilize a from its offset value. Current fiow in the through-hole design. This feature insures opposite direction will cause the output INDUSTRIAL OUTPUT CURRENT SEN- that there will notbe any DC insertionloss _ voltage to decrease from its offset value. SORS in the conductor. In addition, the through- The output voltage range is from 25% of Current sensors with industrial outputs hole design simplifies installation by elim- the supply voltage to 75% of the supply _ easily interface with programmable con- inating the need for direct connection, voltage (0.25 Vec < Vo < 0.75 Vcc). trollers and other industrial control and which minimizes energy dissipation, and monitoring devices. They have 4to20 mA provides output isolation at no extra cost. While sensing either AC or DC current, or 1to5VDC outputs and are packaged in MICRO SWITCH CS through-hole current _ the linear output voltage will track the wa- a low-cost open PC board configuration sensors cannot be damaged by overcur- _veform of the sensed current. or enclosed housings. These devices in- rent. clude a regulator. Therefore, they are not The output of these devices can be ad- _ratiometric. Current sensing is accomplished by mea- _justed by varying the supply voltage, var- suring the magnetic field surrounding a _ ying the gap cutin the flux collector, or in- current-carrying conductor. The conduc- creasing the number of turns of the tor is passed through the flux collector conductor passing through the center of which concentrates the magnetic field at _ the flux collector. Devices on page 35 are the sensing element. The magnetic field _ratiometric.

Solid State Sensors CS Series Current Sensors CATALOG NUMBER SYSTEM HOW TO INTERPRET CURRENT SENSOR SPECIFICATIONS PLEASE NOTE: This matrix is intended The following definitions will helpthe user Release Current — The release current only to aid you in identifying sensor cata- understand the characteristics of the MI- _ is the level of current required to cause a loglistings. Itisnotall-inclusive, and must CRO SWITCH current sensor line. change in logic state as the current flow not be used to form new listings. decreases from the operate point. Adjustable Operating Range — The ad- Example: CSLA1CD justable linear current sensors give the NOTE: The CSDBICC listing has positive CS Current Sensors user the option of changing thesensitivity logic output, current off, logic low, current Linear L according to the maximum sensed cur- _ on, and logic high. The other digital cur- Digital D rent ofthe application. The on-board sen- _ rent detectors have inverse logic output. sitivity adjustment allows the user to alter A1 Holder - 9SS the amplification of the Hall effect sensor, Response Time (linear) — Measured A2 Holder—SS9__ . thereby adjusting the amount of sensed from the time the input current reaches B1 988 DC-DG Rasometric Unreguiated current needed to achieve maximum out- 90% ofits full scale value to the time when B2 988 AC-DC Ratiometric Unregulated ut voltage. the sensor output reaches 90% of final B3 9SS AC-AC Ratiometric Unregulated P ge. or output reaches : B4 ALC DC-DC Ratiometric Unregulated value. This assumes rise time of 1 micro- B5 ALC AC-DC Ratiometric Unregulated Example Vec — 12V second or less on input. B6 ALC AC-AC Ratiometric Unregulated Voffset —Vec/2 — 6V 2 9SS AC-DC 1-5 Unregulated Vo maximum —(75%)Vcec — 9V Response Time (digital) — The length of E1 98S DC-DC 1-5 V Regulated Vspan available —3V time it takes the output to switch to within E2 95S AC-DC 1-5 V Regulated ten percent of the supply voltage from the E3 98S AC-AC 1-5 V Regulated Assumea current maximum of 45 ampsis negative supply after the rated operate Ee ae pene 13N Regulated determined. The user would then apply point is reached on the input. Measured E6 ALC ACI AC 1-5V Regulated 45 amps through the toroid and adjustthe _ time will vary proportionally with the over- F1 9SS DC-DC 4-20 mA Regulated sensitivity where indicated until a 9 volt drive current. F2 9SS AC-DC 4-20 mA Regulated output is achieved. The sensitivity is then F3 98S AC-AC 4-20 mA Regulated determined as (3V)/(45A) —67mV/A. This Sensed Current (Amps Peak) — The F4 ALC DC-DC 4-20 mA Regulated design allows for maximum sensor flexi- SS94A1 and 91SS12-2 linear output Hall F5 ALC AC-DC 4-20 mA Regulated bility. effect sensors have a maximum sensed F6 ALC AC-AC 4-20 mA Regulated range. The toroid (flux collector) in each For best results, choose a sensorto oper- holder assembly has a gap in which the a res pall Holder ate toward its maximum operate range. _ sensor is placed. By varying the width of © Small Holder older Increased amplification occurs when the _ the gap (Ig), the level of current that pro- D Medium Holder sensor is adjusted toward its minimum duces the amount of gauss necessary to E Large Holder operate range. Any circuit noise is also saturate the sensor is varied. In F PCB Large Holder amplified. otherwords, the maximum/minimum out- G Small Sidemount put of the Hall element will always be ob- H Plastic Housing Small Opening Offset Shift — The offset shiftreferstothe tained at rated gauss excitation. The cur- J_ Plastic Housing Large Opening effect of temperature on the offset volt- rent level needed to achieve that K Metal Housing age. Itis defined as a percentage of read- maximum/minimum output depends on L_ PCB Small Sidemount ing per degree Celsius. Example: Offset the width of the gap in the flux collector. voltage is 6.0V at 25°C. The offset shiftis | Max sensed current is also affected by If9ss If SS9ALC +0.05%/°C. Therefore, the offset voltage number of times sensed current wire is at35°C is 6.0V + (0.05%/°C) (6.0V) (10°C) looped thru sensor hole. If max sensed DC-DC Other _ § OV + 0.03V. The offset shift due to current is 100 amps and current wire is A 14Amps | C 24 temperature increases as the device is looped thru hole twice, max sensed cur- 8 8 H 87 g operated toward the temperature ex- rent drops to 50 amps. Looped 4 times it D 57 F 114 125 tremes. drops to 25 amps, 5 times to 20 amps. E 75 ic] 148 = 150 . . A F 100 H 245 235 Offset Voltage —The offset voltageisthe Sensitivity - The change in sensor out- G 4120 J 250 310 voltage output when no currentis flowing put to 1 amp change in input. Units are in H 150 K 400 through the current carrying conductor. _units/NI where N is number of times J 225 L 490 550 This is also known as the null voltage. sensed current wire is looped thru sensor K 925 M 604 765 hole. For example, if sensed current wire L 625 N 950 Operate Current — The operate current _ is looped thru hole twice then sensitivity P 1208 is the level of current required to cause a doubles; looped thru 3 times, sensitivity a 1500 change in logic state from the state at no _ triples, etc. current flow. For example, the logic out- put is high at no current flow. When the Temperature Range — The -25° to current level is increased to the operate +85°C specified is the operating temper- point, the logic output goes low. ature range that the current sensor has been rated. The performance specitica- Ratiometric — Characteristics vary in _ tions are not considered to be valid out- proportion to supply voltage. side the specified temperature range.

Solid State Sensors CS Series Series-Connect Digital Current Sensors - FEATURES CS DIGITAL SENSORS © Digital logic level output Series-connect current sensors produce @ Miniature size a digital logic level output. When the cur- © Encapsulated for physical protection rent being sensed reaches a predeter- © Interchangeability mined level, the output changes state. © Accurate, low-cost sensing @ Printed circuit board mountable Operating Principle: The sensor, wired ® Transient protection provided on I.C. in series with the current being sensed, Fast response time detects the magnetic field surrounding a Output voltage isolation from input current-carrying conductor. This current @ 40 mA current sinking output path is passed through a flux collector in- side the package, and the magnetic field TYPICAL APPLICATIONS is concentrated at the internal digital Hall ® Motor overload protection effect sensing element. The magnetic © Operations verification field is proportional to the current passing Power loss detection through the conductor. Thus, thereis are- @ Monitoring lationship between the output state of the current sensor and the level of current. SERIES-CONNECT DIGITAL CURRENT SENSORS ORDER GUIDE, SINKING OUTPUT Operate | Release Max. Output Current Current | Continuous; Resist- Induct- ‘Supply Output Current Response Catalog @25°C @25°C Current ance ance Volt. Voit. (mA) Time Listing (Amps) (Amps) (Amps) _|_(mOhm) (uH) (Volts DC) | _ (Volts) Sinking (u Sec.) esopiez | 6s [ao | Te 45to24 [oa | aoma [oo | jesopies {00 | 76 =| | ts Ts | abtoze | oa | soma | 60 | jesppreH | iso | tis | oT es a 5t026 | oa | soma || MOUNTING DIMENSIONS SUGGESTED HOLE CENTERS (For reference only) . I ape O13) Key: 256 fe 0 (2) 0,00=mm 100 [ i. 052 0.00=in. — dos, to my [508 |> 5 H L208 |r.62 200 300 View from component side of printed circuit board, i 14,73 580 0,76 ~ .030 17,02 12,70 670 500 4,06 160

Solid State Sensors CS Series Digital Current Sensors FEATURES Digital Current Sensors @ Digital output Each MICRO SWITCH CS series digital @ AC or DC current sensing current sensor provides a logic level out- @ Through-hole design put that changes from approximately Vec © Fast response time to 0.4 volts when the sensed current ex- © Output voltage isolation from input ceeds the operate point (the exception @ Minimum energy dissipation being the CSDB1CC which changes from @ Maximum current limited only by 0.4 volts to Vec when the operate point is conductor size exceeded). Each digital sensor will oper- ® Accurate, low cost sensing ate on AC or DC current, but the output © Operating temperature range —25 to will turn off at every zero crossing when 85°C sensing AC current. DIGITAL CURRENT DETECTORS ORDER GUIDE, SINKING OUTPUT Operate Operate Release Output Current Current Current Supply Output |Current | Response Catalog Pinout | @ 25°C 25°C to +85°C -25-Cto +85-C | Volt. Volt. (mA) Time Listings Style | (Amp-Turns) (Amp-Turns) (Amp-Turns Min.) | (VoltsDC) | (Volts) {Sinking | (u Sec.) cspaisa |? [ose [0.50 0.88 je [22 las es [17w75 foo _[st16 [oa [20ma_[100 | espciwa f2 [00 [oso oe [25wi0 [oos_|s=02 [oa _|aoma [100 _| esocisc [2 [22 [a5 65 |\\7m75 [oa _‘[s=02 [oa [aon [100 | esoataa [1 [ose _josd 088 [astei0 [ose [ewe [oa [oma [00 __| fespaac [+ [22 [as 68 [17.78 [oso [stoi [oa _[aoma [100 | CSDCIAA 050088 [aso [ace _|s=02 oa [2oma [100 | esperc |i [a2 [as 6s [i775 [oso z02 [os [2oma [100 sDC1DA 050088 [25to10 jos [sx 02 [os [a0ma_|100__ | fa [oz |asoose [25010 Joos |[ew16 [as [20ma_ [100 fespcwe fe jaz las es |t7m75 [oo _[ss02 [aa [20na_ [100 espa [222 [a5 65 _[i7w7s [oso |to1¢ Joa |20ma [100 | * The CSDBICC has positive logic output, current off, logic low, current on, logic high. MOUNTING DIMENSIONS (for reference only) re om 28, STE 2 139 + EAE 28.) wet SF 20; a 3 HBR oR STYLE 3 ousting pms oT >} | e TA] ye ep tte ut €) 10 Ee (ll ia . 7% . cs) 2529 comme [TTT] tes

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Solid State Sensors CS Series Linear Current Sensors FEATURES LINEAR CURRENT SENSORS ® Linear output MICRO SWITCH CS series linear current 4 @ AC or DC current sensing sensors incorporate our 91$S12-2 and Through-hole design SS94A1 linear output Hall effect transduc- © Fast response time er (LOHET™). The sensing element is as- © Output voltage isolation from input sembled in a printed circuit board mount- @ Minimum energy dissipation able housing. This housing is available in @ Maximum current limited only by four configuration as shown in mounting conductor size dimension figures 1, 1a, 2 and 2a. Normal @ Adjustable performance and built-in mounting is with 0.375 inch long 4-40 temperature compensation assures screw and square nut (not provided) in- reliable operation serted in the housing. The combination of Accurate, low cost sensing the sensor, flux collector, and housing © Operating temperature range -25 to comprises the holder assembly. These 85°C sensors are ratiometric. ORDER GUIDE — BOTTOM MOUNT WITH 9SS SENSOR, SOURCE OUTPUT Sensed Sensitivity Mig. Supply |Supply |Current —_‘[Offset mv/Nt Offset Response Catalog Dim. Volt. Current |(Amps —_—‘| Volt. At 12VDC Shitt Time Listing Fig. (Volts DC) |(mAMax.) |Peak) Wolts+10%) [Nominal |+TOL |(%/°C) _ | (u Sec.) fesarco [+ ete [ro —ier_——iNewe Seo isa isos isd fostaice [1 |ot016 [tors |oo ona [aa Jos >| festatoe [2 |ato1e fro —‘(rs_—‘veo favs ie —idsos a jester [1 fetore foie «ico ise ia ios csiatog [2 [ewie fo [rao ‘vee joss [as [aos fa festarcn [i [oie [10 [50 |veoa jis fre [ose | estat [2 [awie [10 feos veo raza jz0s ia | [ia Jowore fo foas (veo? ira its feos je id estatoK [2 [ewr6 re fsos__ veo? fas _ir___iaas ia + CSLAIEK [ia [ot016 [10 sas |vooe doa [raison fa —*| [ia feos fro fees voor ss fia [205 fa | BOTTOM MOUNT WITH SS9 SENSOR, SINK/SOURCE OUTPUT* ‘Sensed Sensitivity Mtg. Supply Supply |Current —_[Offset mV/NI Offset Response Catalog Dim. Vott. Current | (Amps Volt. At8VDC Shift Time Listing Fig. (Volts DC) |(mAMax.) |Peak) (Wolts+2%) [Nominal [+TOL _|(%/°C) _[(u Sec.) fesuazco [1 [swore [oo +e ——~dvew——=—SCide ide iis festazce [1 _[otoi2 [a0 ‘(oe _|vco ies anise ia + fesuaae [2 [sre [0 (ae Veo fase pa |z0a fe | fesuazcr [i [owe foo —-fras_—‘iveo? ies ins ideo ida fcsuaoa [2 |owi2 fa _frs0 vee rea iis [zoo a esi) [2 [ewot2 foo fas ite ——ide? iow iso da id [2 ere [20 feos veo ow ra oras Ja festuzes [ia [so12 [po [a0 veo fre jor [sons fa _| jesuaax [2 _|sioi2 [20 [soo [veo sa los |xons a __| festazet [ta [6012 [20 ‘(sso (Neo aa Joa |2oras la jestazem [ia fetore [ao res veo fan fos [oor [as festazen [ia |oto12 [20 __|o50 [veo [20 Jo [oo la | NOTE: When monitoring purely AC current with zero DC component, a capacitor can beinsertedin series wih the oulput ofthe current sensor. The capacitor wil Block ut the effect of the temperature variation of the offset voltage which increases the accuracy of the device.

Solid State Sensors CS Series Linear Current Sensors SIDE MOUNT WITH 9SS SENSOR, SOURCE OUTPUT ‘Sensed wy ‘Supply Supply Current Offset Offset Response Catalog Volt. Current §=|(Amps —_—‘|Volt. Shift Time Listing (Volts DC) |(mAMax.) |Peak) (Wolts+10%) [Nominal [+TOL _|(%/°C) (1 Sec.) fosmid [za etote [ro —isr_——~—Ciiveo Sissi fea footers (Mec ——idova ia ideas fo jes Jewore fio [100 oo oa? _ia7 feos fa —*d SIDE MOUNT WITH SS9 SENSOR, SINK/SOURCE OUTPUT* Sensed Sensitivity Mtg. Supply Supply |Current _offset Pe Offset. [Response Catalog Dim. Volt. Current |(Amps —_[Volt. Shift Time Listing Fig. (Volts DC) |(mAMax.) |Peak) (Votts+2%) [Nominal |[+TOL |(%/°C) _|( Sec.) CR festazce [2a |ewoi2 ao oz vec fant fat soe fa fesumGr fea [swore foo —+iras ives ites sins idee fesuazaa [2a |ewte [eo [r60 vow fer foo ize ile _| NOTE: When monitoring purely AC current with zero DC component, a capacitor can be inserted in series with the output: ‘of the current sensor. The capacitor will block ‘out the effect of the temperature variation of the offset voltage which increases the accuracy of the device. MOUNTING DIMENSIONS (for reference only) Figure 1 Figure 2 3 ox um —4 ‘as, oo $Zuax gun — | ‘a ee 1# wr ~ 10 Ir a AP ax : . (Gee F @Q)~— pe ei BB wax 4, } i a rm = i fad) a Be tw pA L im fer TOF ap _ te iil ge lye BT Ligue i Rumer any ¥ x8 3a ® es L. Hie, sou Dh ee, 93] % a— Figure ta Figure 2a us, o re ~ ai Ve - « ‘ I $80 ar Signer a ued i etal 82 1% vate ! | Le, 208, | 380 ENSOR [4 2B al mn LL ser. lh sean is * Application consideration: The out- putis clamped at the high end. Clamp- ing voltage may be as low as 9VDC. The output will not exceed the clamp- ing voltage regardless of field strength or supply voltage.