Elervator parts overload weight sensor Elevator Load Weighing
Device EWD-H-XJ2
This system is applicable to all elevators with movable car
platform in need of overload signals. This device is of extremely
high performance-price ratio. This appliance is to overcome the
inherent disadvantage of the mechanical overload switch and to
replace it
Main characters:
- Working in a contactless and inductive way. No mechanical movement
itself. Being directly installed in the original place of overload
switch. No necessity of changing the mechanism of elevator car.
- Adopting strong inductive magnet, improving the anti-interference
of the system to the utmost.
- The electrical property is in compliance with the standard of the
International Electro-technical Commission (IEC).
- Rated relay dynamic open, overload relay -dynamic close and
output-break are easy for customers to use.
- More accurately positioning, small overall size, easy installation
and adjustment, simple structure and low price.
⒈ | Application Range | Applicable to all elevators with movable car platform in need of
overload signal with a inspection clearance of 8～15㎜. |
2 | Sensitivity | Rated load / 200(5.0kg when rated load is 1 ton) |
3 | System Error | ≤1.5% (5～40℃) |
4 | Output Mode | 1 pair of relay dynamic CLOSE or dynamic OPEN contacts respectively with the capacity of DC/AC 48V/500mA. |
5 | Operation Ambient Temperature | -25～55℃ |
6 | Power Supply | AC/DC 24V(±10%)/15mA. The operating current of the whole
machine≤100 mA. |
7 | Install Position | Movable elevator car platform |
8 | Overall Size | See figure 43X38.5X60.6mm3 |
Working Principle:
This system weighs the elevator car load based on the principle of
the elastic deformation of movable elevator car platform caused by
loading with the HALL sensor measuring the change of displacement,
fulfilling the aim of load weighing.
Installing Method:
Installing method for moveable car platform.
Adjustment
- Please refer to the above figure to install this device with the
connecting support (made by the customer himself) closing the
middle part of the car platform as near as possible.
- Let the magnet adhesive on the car platform with the marking-face
right facing the induction point of the device.
- Install and adjust this device so that the magnet on the car
platform aiming at the center point of its upper face. Meanwhile,
assure the end face of this device in parallel with that of the
magnet.
- When the elevator is full load, adjust this device up and down to
make the red and green flashing alternatively(if the green light
flashing, please put this device close to the magnet; if the red
light flashing, please make the device away from the magnet). When
the red and green lights flashes alternatively, fasten the device;
Then, press the down button once, the green light flash 6 times,
full -load debugging finishes. When green lights on, it comes to a
state of overload debugging.
- Users put the weight in the car to the overload condition,then,
press the down button once, the green light flash 6 times,overload
debugging finishes, it comes to the normal working condition;
- If it needs debugging, press the button on the device after power
on, the red light flashing, when the green light flashes, release
the button, the green light flashing after 4 times, it comes into
the state of factory debugging.
The principle of system wiring:
Wire | Function | Explanation |
Red, black(gray) | System Operating Power | Operating Power AC/DC24V(±10%)/100mA |
White | yellow | Full load relay | Dyn. open contact |
contact capacity:DC/AC 48V/500mA
|
green | blue
| Overload realy | Dyn. open contact |
Attention : Output wire of this device must not be connected with
external power supply to avoid everlasting damage.
Others:
Accessory: Inductive magnet [20×20×3mm3] 1 piece Fastening Nut Φ4X20 : 2 sets
If there is any abnormality during adjustment or operation, contact
our company directly.
Techinical support: +86 18092639750
Attention:
1. The inductive magnet is specially made of rare earth magnet with
strong magnetism for this product. Take special care in the course
of installation. Don’t let it close to the high temperature above
100℃ to avoid demagnetization and our company will not be
responsible for the personal hurt and equipment damage arising from
this.
2. It is suitable for massive purchase.
Website:www.estlift.com/www.est-lift.com
Contact Person:Miss Yolly
E-mail:yollyapple@163.com
sales01@xaest.com
Skype:yollyapple
Wechat:YollyApple
Whatsapp&Mobile:+86 189 9286 2361
Tel:+86-029 8841 6613-808
Fax:+86-029 8556 5714-886
