Honeywell Micro Switch BZ Basic or BZE6 Sealed Limit Switches Instruction Manual
Switches for Automated Parking Gates/Barriers
An Application Note
Background
Parking gates/barriers restrict entry, provide admittance, and report an accurate count of vehicles entering and exiting the parking lot or structure. If a gate does not operate as designed, downtime could result in loss of revenue due to service calls and inaccurate reporting of vehicles entering and exiting the parking lot. These gates can often be located in an open environment where they can be exposed to varying weather conditions or an open-air structure. Open environments can experience high and low temperature extremes (-40 °C to 50 °C), condensation within the device, and exposure to rain, dust, dirt, snow, oil, lubricants, and other elements which can affect the gate’s performance.
Solution
Honeywell offers basic and limit switch solutions to help ensure the gate’s reliability and performance. For covered parking garages/structures in non-extreme weather conditions (where dust and moisture are not typical), Honeywell recommends the MICRO SWITCH BZ Series basic switch. For harsh conditions and open-air parking facilities, Honeywell offers the MICRO SWITCH E6/V6/E7/V7 Series sealed limit switch. Switches are essential for gate reliability and functionality. These switches provide information about the position of the gate, assist the drive to operate correctly, and address open/closed requests from the system driven by motion sensors, cameras, scan engines, etc.
Both the BZ Series and the E6/V6/E7/V7 Series contain a similar basic switch (see Figure 2).
Both switches offer enhanced mechanical life. The BZ basic switch is rated up to 20 million cycles; whereas the E6/V6 is rated up to 5 million cycles.
Electrically, switches are capable of switching logic levels up to powerfully loads for PLC and motor control applications. These Series can switch from mA to up to 22 A, and from low voltage 2 V to 240 V. Therefore, this switch package can provide a wide variety of inputs to control systems.
Figure 1. MICRO SWITCH BZ Basic Switch or BZE6 Sealed Limit Switch Used in a Parking Gate Barrier Application
The switch is installed a on fixed pole where the armrests and rotates (see Figure 1). When the arm opens and closes, the switch is actuated to signal a vehicle has either entered or exited. When the arm is down, the switch remains in the free state. Conversely, when the arm is raised, the switch is actuated.
The E6/V6 Series’ standard temperature range is -32 °C to 71 °C [-25 °F to 160 °F] with an optional -40 °C [-40 °F] low temperature. The BZ Series basic switch has an operating temperature range of -55 °C to 85 °C [-67 °F to 185 °F]. Honeywell switches have elongated mounting holes that allow for easier, more accurate mounting, and also have sufficient space for wiring the contacts more easily and quickly. The BZ and the BZE6 Series features standard 25,4 mm mounting centers for global acceptance. The BZV7 which has 41,3 mm mounting centers with 5,2 mm holes.
For dirty, dusty, harsh conditions, the E6/V6 Series is sealed to IP66, while the E7/V7 Series is sealed to IP65 to prevent dust and liquid ingress.
MICRO SWITCH E6/V6 and E7/V7 Series switches feature an electrostatic epoxy coated metal housing for durability in most indoor and outdoor environments, and a wide variety of actuators to solve most applications requirements.
These switches are suitable for global applications.
- BZ Series switches carry UL, CSA, ENEC, CE approvals
- E6/V6 Series switches are UL, CSA, and CE certified for most SPDT catalog listings
- Most E7/V7switches have approvals from CSA and CE
BZ Basic Switch Features and Benefits
- Accepted worldwide standard “Large Basic” switch
- Low operating force and differential travel
- Long mechanical life up to 20,000,000 cycles at 95% survival
- Elongated mounting hole for easier, more accurate mounting
- Current rating ranges from mA to 22 A
- Choice of actuation, termination, and operating characteristics
Figure 2. MICRO SWITCH BZ Basic Switch used in E6/V6/E7/V7 switches
E6/V6 and E7/V7 Limit Switch Features and Benefits
- Side or flange mount
- Wide variety of actuators
- Momentary or maintained contact
- Internal grounding screw
- Current range from mA to 22 A
- Temperature range -32 °C to 71 °C [ -25 °F to 160 °F]
- Optional low temperature -40 °C to 71 °C
- UL Recognized, file #E12252
- CSA Certified, file #LR41372
- NEMA 1, 3, 4, and IP66 with rubber boot on plunger
- Pre-leaded or connector termination options
Warranty/Remedy
Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship during the applicable warranty period. Honeywell’s standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order acknowledgment or consult your local sales office for specific warranty details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items that Honeywell, in its sole discretion, finds defective. The foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages.
While Honeywell may provide application assistance personally, through our literature and the Honeywell website, it is buyer’s ole responsibility to determine the suitability of the product in the application. Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this writing. However, Honeywell assumes no responsibility for its use.
Honeywell Control Systems Ltd
Newhouse Industrial Estate
Newhouse/Motherwell
ML1 5SB
UK
For more information
Honeywell Advanced Sensing Technologies services its customers through a worldwide network of sales offices and distributors. For application assistance, current specifications, pricing or the nearest Authorized Distributor, visit sps.honeywell.com/ast
or call: Asia Pacific +65 6355-2828
Europe +44 (0) 1698 481481
USA/Canada +1-800-537-6945
Honeywell Advanced Sensing Technologies
830 East Arapaho Road
Richardson, TX 75081
sps.honeywell.com/ast
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.
MISUSE OF DOCUMENTATION
- The information presented in this product sheet is for reference only. Do not use this document as a product installation guide.
- Complete installation, operation, and maintenance information is provided in the instructions supplied with each product. Failure to comply with these instructions could result in death or serious injury.
