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Datasheet

MICRO SWITCH HeavyDuty Limit Switch (Stainless Steel)

HDLS LS2 Series

DESCRIPTION

When the application requires an industrial grade limit switch

where wet, dust, or corrosive environments may be present,

Honeywell offers the LS2 Series of stainless steel limit

switches. The limit switch body and actuating heads are cast

from 316 stainless steel. These limit switches are available with

a wide variety of actuating heads with a one-pole or two-pole

snap-action double-break contact block. A threaded conduit is

integral to the switch body with terminal screws for each wiring

point on the contact block. Honeywell can provide the switches

factory wired for reduced installation. The limit switches

can also be factory wired with the limit switch body epoxy

encapsulated, minimizing any dust or liquid migrating to the

switch contacts. The limit switches can be front mounted with

two through holes or rear mounted with two integral threaded

holes from the back side.

As with the other HDLS Series of limit switches, the LS2

Series have UL, CSA, CE, and CCC certiﬁcations for global

acceptance.

DIFFERENTIATION

• Stainless steel housing designed for corrosive and adverse

environments

• All-metal drive chain for consistent operating characteristics

• Three different electrical connectivity options; threaded

conduit, factory wired, or factory wired with epoxy

encapsulated body

• Side rotary head incorporates stainless steel shaft with

bronze bearing for increased mechanical life of up to 50

million operations

• Wide selection of stainless steel levers to compliment the

side rotary limit switch

FEATURES

• 316 Series stainless steel actuating heads and body with

stainless steel screws

• Designed to IP 65/66/67 and NEMA 1, 3, 3R, 4, 4X, 6, 6P, 12,

and 13

• Diaphragm seal between head and body provides an extra

degree of sealing

• Fluorocarbon seals standard for chemically harsh

environments and/or higher temperature applications

(121 °C/250 °F)

• Optional ﬂuorosilicone seals for low temperature

(40 °C/40 °F) applications

• Available with 1NC/1NO or 2NC/2NO double break

contacts. Same polarity for each pole (Za)

• Side rotary head with center neutral or sequential switch

design available

• Actuator heads can be ﬁeld rotated to any of four positions

90° apart

• Side rotary heads are factory adjusted for CW and CCW

actuation of the switch. Heads can be ﬁeld adjusted for CW

only or CCW only to actuate the switch

• CCC, CE, CSA, and UL certiﬁcations for global acceptance

POTENTIAL APPLICATIONS

• Food processing plants

• Petrochemical plants

• Power generating plants

• Pulp and paper mills

• Shipboard and dockside locations

• Transportation hubs and facilities

• Water treatment and wastewater treatment facilities

VALUE TO CUSTOMERS

• Harsh-duty stainless steel switch withstands many

tough environments including dust, dirt, grime, heat, and

washdown areas

• Variety of actuator heads and switch options

• Threaded conduit or factory wired

• Silver contacts or optional gold-plated contacts

• Made in the USA

PORTFOLIO

The heavy-duty LS2 Series stainless steel limit switches are a

portion of Honeywell’s heavy duty HDLS Series limit switches

which also include the HDLS Series and the factory sealed

HDLS Series. Honeywell has a comprehensive line of general

purpose limit switches, compact precision limit switches,

miniature limit switches, and specialty limit switches. To view

the entire product portfolio, click here.

Sensing and Internet of Things

002426

Issue 1

Summary of content (17 pages)

PAGE 1
MICRO SWITCH Heavy-Duty Limit Switch (Stainless Steel) HDLS LS2 Series 002426 Issue 1 Datasheet FEATURES DESCRIPTION When the application requires an industrial grade limit switch where wet, dust, or corrosive environments may be present, Honeywell offers the LS2 Series of stainless steel limit switches. The limit switch body and actuating heads are cast from 316 stainless steel.
PAGE 2
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 1. Specifications Characteristic Parameter Product type MICRO SWITCH heavy-duty limit switch, LS2 Stainless Steel Series Certifications UL, CSA, CE, CCC Reference standards UL508, CSA C22.2 # 14, EN/IEC 60947-5-1, GB 14048.5 Housing material 316 Series stainless steel Actuator heads Side rotary Side rotary (maintained) Side rotary (sequential) Side roller plunger Top roller plunger Termination 0.5-14 NPT, 0.
PAGE 3
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 2. Electrical Ratings 10 A Thermal (Ith) ac Volts; Pilot Duty; AC15, A600 Electrical Rating Circuitry AC15, A600 SPDT, DPDT Vac Amps at 0.35 PF (make) Amps at 0.35 PF (carry and break) 120 60 6 240 30 3 480 15 1.5 600 12 1.2 Vdc Make & Break Amps Inductive Make & Break Amps Resistive 125 0.25 0.8 250 0.15 0.4 Table 3.
PAGE 4
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Figure 2. Product Nomenclature: Low Temperature Versions M LS2Y Switch Type Actuator Heads (unless noted, all side rotary heads are CW/CCW) LS2Y Series rotary, roller plunger, A Side D Top momentary momentary Limit Switch Side rotary, Side pin plunger, with stainless steel E momentary N maintained, CW (reset), CCW (trip) housing, Side rotary, central with low temp.
PAGE 5
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) MICRO SWITCH HDLS STAINLESS STEEL LS2 SERIES ACTUATOR HEADS SIDE ROTARY: Available levers provide greater versatility. Actuating heads can be indexed in any of four positions, 90° increments. All are momentary action except maintained head (LS2N Series). LS2A - Standard: 15° maximum pretravel, 5° (single-pole) and 7° (double-pole) maximum differential travel, 60° minimum overtravel.
PAGE 6
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 5.
PAGE 7
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) WIRING DIAGRAMS Figure 5. 3E, 3K, 4K 1NC/1NO Figure 6. 4KC, 4KPC, 4KP-FP 1NC/1NO with 5-conductor cable Black 4 3 4 2 1 Same polarity Same polarity Orange 1 Green internal screw = Ground Figure 7. 4L 2NC/2NO Pole 1 2 Red Green = Ground Figure 8.
PAGE 8
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) ELECTROMECHANICAL SWITCHES Definitions below explain the meaning of operating characteristics. Characteristics shown in tables were chosen as most significant. They are taken at normal room temperature and humidity. These may vary as temperature and humidity conditions differ. Sketches show how characteristics are measured for in-line plunger actuation, rotary actuation, and includes bar chart description. Operating Force (O.F.
PAGE 9
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 6. Order Guide: Side Rotary LS2A4K Contact ArBar Chart (degrees) rangement n Contact closed (snapo Contact open action) Electrical Termination Wiring Diagram (page 7) Note Side rotary, standard 1NC/1NO pretravel 0.75-14 NPT conduit with screw termination Figure 5 Standard switch construction LS2YAB4K Side rotary, standard 1NC/1NO pretravel 0.75-14 NPT conduit with screw termination Figure 5 Low temp.
PAGE 10
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 6. Order Guide: Side Rotary, continued Side Rotary Catalog Listings Actuator Head Type Contact ArBar Chart (degrees) rangement n Contact closed (snapo Contact open action) Electrical Termination Wiring Diagram (page 7) Note 0.5-14 NPT conduit with screw termination Figure 5 Standard switch construction 65° 1-2 3-4 3-4 1-2 LS2N3K Side rotary, maintained 1NC/1NO 85° 25° 0° Pretravel • 65° max. Diff.
PAGE 11
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 7. Order Guide: Plunger Top and Side Plunger Catalog Listings Actuator Head Type Contact ArBar Chart (mm [in]) rangement n Contact closed (snapo Contact open action) Electrical Termination Wiring Diagram (page 7) Note 0.75-14 NPT conduit with screw termination Figure 5 Low temp. switch construction 0.75-14 NPT conduit with screw termination Figure 7 Standard switch construction 0.
PAGE 12
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 7. Order Guide: Plunger, continued Top and Side Plunger Catalog Listings Actuator Head Type Contact ArBar Chart (mm [in]) rangement n Contact closed (snapo Contact open action) LS2E4K LS2YEB4K Side pin plunger Side pin plunger 1NC/1NO 1NC/1NO 1-2 3-4 3-4 1-2 0 in 2,54 mm [0.10 in] 1,4 mm [0.055 in] Electrical Termination Wiring Diagram (page 7) Note 0.
PAGE 13
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Table 8. LS2 Series Stainless Steel Levers Catalog Listing Material Rod/Roller Dia. mm [in] Rod/Roller Width mm [in] Roller Mounting Nylon Stainless steel Nylon Stainless steel Bronze Bronze Nylon 19,0 [0.75] 19,0 [0.75] 19,0 [0.75] 19,0 [0.75] 19,0 [0.75] 19,0 [0.75] 40,4 [1.59] 6,35 [0.25] 6,35 [0.25] 6,35 [0.25] 6,35 [0.25] 6,35 [0.25] 6,35 [0.25] 6,35 [0.25] Front Front Back Back Front Back Front LS2Z52A Nylon 19,0 [0.
PAGE 14
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) MICRO SWITCH HDLS Side Rotary Levers’ Cam Tracking Levers for side and top rotary switches are normally ordered as separate catalog listings. They also may be ordered by including a LSZ51 TYPE CAM TRACKING suffix toLEVERS the switch catalog listing (see nomenclature tree in this document) and adding the lever price. Figure 13. LS2Z51 Type Levers Cam Tracking 57,4 - 63,8 [2.26 - 2.51] ADJUSTMENT LEVER INVERTED 58,9 - 65,3 [2.32 - 2.
PAGE 15
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Figure 16. LS2 Series Side Rotary (mm [in]) Figure 17. LS2 Series Side Rotary with Cable (mm [in]) 47,8 1.88 47,8 1.88 39,6 1.56 39,6 1.56 62,0 2.44 14,7 0.58 62,0 2.44 14,7 0.58 MTG. PADS 25,4 1.00 36,6 1.44 19,1 0.75 MTG. PADS 25,4 1.00 36,6 1.44 19,1 0.75 122,9 4.84 59,4 2.34 86,6 3.41 9,6 / 0.38 Ø DIA x 6,4 / 0.25 DEEP COUNTERBORE (2) 10-32 UNF 2B (2) TAPPED FROM REAR ONLY 7,9 / 0.31 MIN DEP 29,5 1.16 5,1 / 0.
PAGE 16
MICRO SWITCH Heavy-Duty Limit Switch, Stainless Steel (LS2 Series) Figure 20. LS2 Series Side Plunger (mm [in]) Table 9. Replacement Actuating Heads for LS2 Limit Switches 47,8 1.88 39,6 1.56 44,2 1.74 OPERATING POINT 14,7 0.58 4,6 0.18 21,6 0.85 20,3 0.80 31,5 19,1 1.24 0.75 12,7 Ø 0.50 117,9 4.64 59,4 2.34 Ø 9,6 / 0.38 x 6,4 / 0.24 DEEP COUNTERBORE (2) 86,6 3.41 93,7 3.69 MTG PADS 29,5 1.16 Ø 5,1 / 0.20 MOUNTING HOLES (2) 3/4 - 14 NPT 10-32 UNF 2B (2) TAPPED FROM REAR ONLY 7,9 / 0.
PAGE 17
m WARNING ADDITIONAL MATERIALS The following associated literature is available at sensing.honeywell.com: • Product range guide • Product installation instructions • Application notes • CAD drawings • Product images PERSONAL INJURY DO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury.