Honeywell SZL-WL series General Purpose Limit Switch User Guide
- June 7, 2024
- Honeywell
Table of Contents
**Honeywell SZL-WL series General Purpose Limit Switch User Guide
**
FEATURES
- Single Pole Double Throw, Double Break
- High mechanical strength and Rugged Aluminum die-cast housing
- Wide range of levers and actuators
- Standard mounting dimensions
- 10 Amp current capacity
- Long mechanical life
- Set position indicator for easy maintenance
- Oil tight, waterproof and dustproof construction
- UL,CSA,CE approved
- IP67 Enclosure rating
APPLICATIONS
- Machine tools
- Material handling
- Food and beverage
- Conveyors
- Special machinery
- Control Valve
- Auto Parking
DESCRIPTION
The new economical SZL-WL series general purpose limit switches are cost-
effective switches for detecting objects in a wide range of applications from
general purpose conveyors to heavy-duty machinery. Rugged and reliable, these
switches are offered with a variety of actuators, functions and electrical
ratings.
Various series of over travel types, high precision types, double sealing
types as well as weld-immune types can be selected based on your specific
application.
These switches are specially designed for world-wide applications and
supported by Honeywell global resources for sales and after sales service.
Customers will benefit from Honeywell’s vast experience in serving world
industries over many years. To minimize plant down-time and reduce maintenance
costs, the SZLWL series include indicator type switches with twin LEDs.
WARNINGS
- DO NOT USE this product as safety or emergency devices or in any other applications where failure of the product could result in a personal injury.
- This information presented in this product sheet is for reference only. DO NOT USE this document as product installation information.
MODEL SELECTION GUIDE: __
Type| Standard| Over travel| High
precision
---|---|---|---
| A series| B series| C series| D series|
Actuator| | | |
Side Rotary
Roller Lever Standard
| | SZL-WL-A| SZL-WLA-A| SZL-WLB-A| SZL-WLC-A| SZL-WLD-A| SZL-WLE-A
Side Rotary
Roller Lever Adjustable
| | SZL-WL-B| SZL-WLA-B| SZL-WLB-B| SZL-WLC-B| SZL-WLD-B| SZL-WLE-B
Side Rotary Rod Adjustable| | SZL-WL-C| SZL-WLA-C| SZL-WLB-C| SZL-WLC-C| SZL-
WLD-C| SZL-WLE-C
Fork Lock Lever
(opposite direction rollers)
| | SZL-WL-D|
Note:
- As for indicator types and special types, refer to the numbering below.
- In addition to the listings above, many more standard and special types are available on your specific application needs.
Fork Lock Lever (same direction rollers)| | SZL-WL-P
Top Roller Plunger| | SZL-WL-E
Top Plunger| | SZL-WL-F
Top Roller plunger Sealed| | SZL-WL-G
Side Roller Plunger| | SZL-WL-H
Top Ball Plunger| | SZL-WL-I
Side Plunger| | SZL-WL-J
Wobble-coil spring
(Φ 6.5)
| | SZL-WL-K
Wobble-coil spring
(Φ 4.8)
| | SZL-WL-L
Wobble-plastic rod (Φ 8.0)| | SZL-WL-M
Wobble-steel wire (Φ 1.0)| | SZL-WL-N
Numbering Scheme
SZL-WL
- Type
- None Standard
- A Over travel A series
- B Over travel B series
- C Over travel C series
- D Over travel D series
- E High Precision
- Actuator
- Refer to the table above.
- Special Type
- None Non-special
- L Weld-immune type
- E Double Sealing type
- Indicator
- None No indicator
- LE Neon lamp(AC type )
- L3 LED(DC24V/1.3mA)
TECHNICAL NFORMATION: ___
Electrical Ratings
Part Number (Type)| Rated Voltage (V)| Make and break amps (Non-inductive
load)| Make and break amps (inductive load)
---|---|---|---
Resistive load| Lamp load| Inductive load| Motor load
NC| NO| NC| NO| NC| NO| NC| NO
| AC 125| 10| 3| 1.5| 10| 5| 2.5
Standard type Over travel A series
Over travel C series
Over travel D series
High precision| 250
480
| 10
10
| 2
1.5
| 1
0.8
| 10
3
| 3
1.5
| 1.5
0.8
DC 8
14
30
125
| 10
10
6
0.8
| 6
6
4
0.2
| 3
3
3
0.2
| 10
10
6
0.8
| 6
6
4
0.2
| 250| 0.4| 0.1| 0.1| 0.4| 0.1
| AC 125| 5| –| –| –| –
Over travel B series| 250| 5
DC 125| 0.4| –| –| –| –
| 250| 0.2
Notes:
- Inductive load : power factor=0.4, time constant=7ms
- Lamp load has an inrush current of 10 times the steady state current.
- Motor load has an inrush current of 6 times the steady state current.
Specifications
| Circuitry | Single Pole Double Throw, Double Break |
|---|---|
| Actuators | Refer to the model selection |
| Operating speed | 1mm/s to 1,000 mm/s with SZL-WL-A |
| Max. Operating frequency | Mechanical : 120 operations/min, Electrical : 20 |
operations/min
Contact Material| Ag + Cu
Contact resistance(Initial)| Max. 25mΩ
Insulation resistance| Min. 100MΩ (at 500VDC)
Dielectric strength
|
1,000VAC, 50/60 Hz for 1 min between non-continuous terminals (600VAC for over travel B series)
2,200VAC, 50/60 Hz for 1 min between each terminal and non-current-carrying metal part and between each terminal and ground (1,500VAC for over travel B series)
Temperature rise| Max. 50 ℃
Vibration resistance
| Malfunction durability : 10 to 50 Hz, 1.5mm double amplitude (exclude wobble actuator types: -K,-L,-M,-N listings)
Shock resistance
| Destruction durability : approx. 1,000 m/s2 (100G)
Malfunction durability : approx. 300 m/s2 (30G) (exclude wobble actuator types)
Ambient temperature| Operating : -10℃ to +80℃(14℉ to 176℉)
Ambient Humidity| Operating : Max. 95 %RH
Service life
| Mechanical : 15,000,000 operations (10,000,000 operations for over travel B
series and wobble) Electrical : 750,000 operations (500,000 operations for
over travel B series)
Weight| Approx. 270 g with SZL-WL-A
Agency Approvals| C-UL,CE,CSA approved
Sealing| IP67
Operating Characteristics
A. Standard Type
| WL-A | WL-B* | WL-C** | WL-D,P | WL-E | WL-F | WL-G | |
|---|---|---|---|---|---|---|---|
| OF (max.) | 1,360g | 1,360g | 142g | 1,200g | 2,720g | 2,720g | 1,700g |
| RF (mi n.) | 227g | 227g | 28g | – | 910g | 910g | 450g |
| PT | 15± 5˚ | 15± 5˚ | 15± 5˚ | 50± 5˚ | 1.7 ㎜ (max.) | 1.7 ㎜ (max.) | 1.7 ㎜ |
| OT (min.) | 30˚ | 30˚ | 30˚ | 35˚ | 5.6 ㎜ | 6.4 ㎜ | 5.6 ㎜ |
| MD (max.) | 12˚ | 12˚ | 12˚ | – | 1 ㎜ | 1 ㎜ | 1 ㎜ |
| TT (min.) | 40˚ | 40˚ | 40˚ | – | – | – | |
| OP | – | – | – | – | 44± 0.8 ㎜ | 34± 0.8 ㎜ | 44± 0.8 ㎜ |
| TTp (max.) | – | – | – | – | 39.5 ㎜ | 29.5 ㎜ | 39.5 ㎜ |
| WL-H | WL-I | WL-J | WL-K*** | WL-L*** | WL-M*** | WL-N*** | |
| OF (max.) | 4,082g | 2,720g | 4,082g | 150g | 150g | 150g | 29g |
| RF (mi n.) | 907g | 910g | 907g | – | – | – | – |
| PT | 2.8 ㎜ | 1.7 ㎜ (max.) | 2.8 ㎜ (max.) | 20± 10 ㎜ | 20± 10 ㎜ | 40± 20 ㎜ | 40± 20 ㎜ |
| OT (min.) | 5.6 ㎜ | 4 ㎜ | 6.4 ㎜ | – | – | – | – |
| MD (max.) | 1 ㎜ | 1 ㎜ | 1 ㎜ | – | – | – | – |
| TT (min.) | – | – | – | – | – | – | – |
| OP | 54.2± 0.8 ㎜ | 44.5± 0.8 ㎜ | 40.6± 0.8 ㎜ | – | – | – | – |
| TTp (max.) | – | 41 ㎜ | – | – | – | – | – |
Notes:
- Operating characteristics of WL-B are those measured at the arm length of 38 ㎜.
- Operating characteristics of WL-C are those measured at the lever length of 140 ㎜.
- Operating characteristics of these types are those measured at the tip of the actuator.
B. Over travel Type/High Precision Type
| WLA-A | WLB-A | WLA-B* | WLB-B* | WLA-C** | WLB-C** | WLC-A | |
|---|---|---|---|---|---|---|---|
| OF (max.) | 1,000g | 1,000g | 1,000g | 1,000g | 290g | 290g | 900g |
| RF (mi n.) | 100g | 100g | 100g | 100g | 25g | 25g | 50g |
| PT | 18± 4˚ | 10± 21 ˚ | 18± 4˚ | 10± 21 ˚ | 18± 4˚ | 10± 21 ˚ | 25± |
5˚
OT (min.)| 55˚| 65˚| 55˚| 65˚| 55˚| 65˚| 60˚
MD (max.)| 10˚| 7˚| 10˚| 7˚| 10˚| 7˚| 16˚
TT (min.)| 80˚| 80˚| 80˚| 80˚| 80˚| 80˚| 90˚
OP
TTp (max.)
| | | | | | |
| WLC-B*| WLC-C*| WLD-A| WLD-B| WLD-C**| WLE-A|
OF (max.)| 900g| 260g| 980g| 980g| 290g| 1360g|
RF (mi n.)| 50g| 10g| 120g| 120g| 25g| 150g|
PT| 25± 5˚| 25± 5˚| Max. 20˚| Max. 20˚| Max. 20˚| 6± 1˚|
OT (min.)| 60˚| 60˚| 70˚| 70˚| 70˚| 40˚|
MD (max.)| 16˚| 16˚| 10˚| 10˚| 10˚| 3˚|
TT (min.)| 90˚| 90˚| 90˚| 90˚| 90˚| 40˚|
OP| –| –| –| –| –| –|
TTp (max.)| –| –| –| –| –| –|
- Operating characteristics of these types are those measured at the arm length of 38 ㎜.
- Operating characteristics of these types are those measured at the lever length of 140 ㎜
C. THE OPERATING CHARACTERISTICS OF SPECIAL TYPES ARE THE SAME WITH THE TABLE ABOVE.
Approvals
| Approval | Standard | File No. |
|---|---|---|
| UL | UL508 | E150950 |
| CE | EN60947-5-1 | NA |
| CSA | CSA std C22.2 | LR65601-13 |
Circuitry
Electrical Life Curve
Indicator Installation
- Indicator is positioned to fit to the NC-ON window of the cover and the spring is aligned to NO contacts.
- Indicator is On when NC contacts are closed(at free position),then goes Off when NO contacts are closed(when actuated).
- Every switch is shipped out of factory with this mode.
- Indicator is positioned to fit to the NO-ON window of the cover and the spring is aligned to NC contacts
- Indicator is On when NO contacts are closed(when actuated),then goes Off when NC contacts are closed(when released).
- NO-ON mode and NC-ON mode can be switched to each other by rotating the indicator holder.
Set Position Indicator
The two convex surface indicators on the shaft housing show the operating zones for proper operation to help you do simple installation and maintenance. Too much over travel may cause short mechanical life due to possible damage to the switch mechanism.
Proper Zone
Too little Over travel, adjustment needed
Too much Over travel, adjustment needed
Too much Over travel, adjustment needed
Mounting Dimensions
Sealing/Mounting Accessory