LLEC6 load weighing device

(v 2.3)

To check and download all versions of this guide, go at the following link.

Safety and usage cautions

Before installing our products, we recommend you to consult the section about safety and usage cautions at the link below

Main features

• 2 relays thresholds + analog output
• Automatic compensation of elevator car dynamic load during travel (load locking input)
• Automatic compensation of elevator car static load
• Adjustable compensation of travelling cable weight
• Detachable programming tool (2×8 characters)
• External cover water protection (IPX2)

System components

LLEC6 with integrated sensor

A) – code [EWSLL6FRM] – LLEC6 with integrated sensor (for car frame)

LLEC6 for external sensors

A) – code [EWSLL6ROP] – LLEC6 for external sensors

B1) – External sensor for ropes (2mt cable)

        code [EWS.RS6X13] – Maximum 6 ropes (Ø 13mm)

        code [EWS.RS7X10] – Maximum 7 ropes (Ø 10mm)

        code [EWS.RS10X8] – Maximum 10 ropes (Ø 8mm)

B2) – External sensors kit for elevator car bottom (6mt cable)

        code [EWS.CS300] – 300 kg for each sensor

        code [EWS.CS400] – 400 kg for each sensor

        code [EWS.CS700] – 700 kg for each sensor

B3) – code [EWS.CSSLI] – External sensor for car frame (4mt cable)

Optional components

code [AUT.KIT08] – Magnetic sensors (NC)

code [EWS.AL212] – Power unit 220V

code [EWS.LL3S] – third threshold

Installation

LLEC6 with integrated sensor (for car frame)

code [EWSLL6FRM]

LLEC6 for external sensor (for ropes)

code [EWSLL6ROP] + [EWS.RS6X13] / [EWS.RS7X10] / [EWS.RS10X8]

A) – Maximum load table (Mass structure + lift capacity)
In case of lift roping 2:1 (sensor on fixed-ending + pulley) maximum load is doubled.

LLEC6 for external sensors (for elevator car bottom)

code [EWSLL6ROP] + [EWS.CS300] / [EWS.CS400] / [EWS.CS700]

LLEC6 for external sensors (for car frame)

code [EWSLL6ROP] + [EWS.CSLLI]

Wiring Instructions

Control unit connections

Connection with controller DMG Pitagora 4.0

A) – TOC box on the cabin roof
B) – Threshold 1
C) – Threshold 2
D) – Travelling cables compensation

Connection with controller DMG Playboard V3

A) – TOC box on the cabin roof
B) – Threshold 1
C) – Threshold 2
D) – Travelling cables compensation

Connection with other controllers

A) – Dry contact (NO/NC) of the controller
B) – Threshold 1
C) – Threshold 2
D) – Travelling cables compensation
E) – 220V external power unit

External sensors connections

Connection of the ropes’ sensor

A) – Control unit
B) – Ropes’ sensor

Connection of the elevator car bottom sensors

4 sensors wiring diagram
8 sensors wiring diagram

A) – Control unit
B) – Elevator car bottom sensors (P= Pression / T= Traction)


To avoid all malfunctioning of the device, even after possible overload events (i.e. parachute test) we advice to insert a fix block to protect the load sensors.

B) – Sensor
C) – Bolt M12

Connection of the car frame sensor

A) – Control unit
B) – Car frame sensor

Third threshold connection

Third threshold connection

A) – Third threshold
B) – Common
C) – Third threshold output

Calibration

1	--->	[▼]	--->	< Setting >
2	--->	[OK]	--->	< Warm-up, please wait >
					Sensor warm up
				< Calibration >
3	--->	[OK]	--->	[▲] [▼] [◄] [►]	Enter the capacity of cabin (Kg)
4	--->	[OK]	--->	< Empty cabin, are you sure ? >
5	--->	[OK]	--->		10 sec. to exit the cabin
				< Reference weight >
6	--------->			[▲] [▼] [◄] [►]	Enter the weight to be loaded in the cabin for calibration (at least 30% of capacity)
7	--->	[OK]	--->		10 sec. to exit the cabin

Thresholds values are automatically set (editable from < Thresholds > menu):
Threshold 1 = 100% Capacity; contact N/O – Threshold 2 = 115% Capacity; contact N/O

Travelling cables compensation

[AUT.KIT08]

In lifts with significant cables’ overall weight, the compensation of travelling cables’ weight is an important step. One has to account for: 1) Lift max load, 2) travelling cables’ weight per meter, 3) Shaft total length.

Before performing this procedure, in addition to the main connections, [AUT.KIT08] external position sensor must be connected. If you already have DEUM15 encoder you need only connect LLEC6 control unit without using the external sensor, using the serial line for cables’compensation.

Position sensor wiring

DEUM encoder wiring

DEUM15 encoder programming requires a serial position indicator.

Compensation procedure

First, perform the system calibration

1	--->	[▼]	--->	< Setting >
2	--->	[OK]	--->	< Calibration >
3	--->	[▼]	--->	< Compensation >
4	--->	[OK]	--->	< Bottom floor, are you sure ? >
5	--------->			Cabin at the lowest floor
6	--->	[OK]	--->	Wait until countdown stops
7	--->	[OK]	--->	< Top floor, are you sure ? >
8	--------->			Cabin at the highest floor
9	--->	[OK]	--->	Wait until countdown stops

Cables weight is automatically set (editable from < Configuration > / < Compensation > menu). Set the value to 0 kg to disable the function.

Advanced programming

Programming tool

A) – Browse options at current level.

B) – Access to menu and confirm selection.

C) – Exit from current level and return to previous level.

The programming tool can also be separated from the control unit and connected by telephone cable. (ex.: back of the pushbutton panel)

Troubleshooting

Problem	Solution
The device is switched off (LED 1 OFF).	Power up the device.
The device doesn't work (LED 2 does NOT flashing).	Power cycle the device.
Thresholds exceeded and active (LED 3/4 ON).	Reduce the car load to reset thresholds.

While replacing a LLEC2/3, the existing 120 Ω sensors can be maintained only by powering the LLEC6’s 12V control unit via the EWS.AL212 external power supply.

Diagnostic

Led OFF

Led ON (NOT Flashing)

Led ON (Flashing)

	Led	Status	Led	Status
Led 1 = Power supply				See "Troubleshooting"
Led 2 = Watchdog (Normal operating)				See "Troubleshooting"
Led 3/4 = Thresholds 1/2				See "Troubleshooting"
Led 5 = Load locking		Measuring NOT in progress		Measuring in progress
Led 6 = Cable weight compensation		Enabled		Disabled

Datasheet

Dimensions
Voltage	12/24V DC
Max absorption	200 mA
Relays output 1/2	1A, 30V DC (Resistive load)
Analog output	0-5V, referred to GND. (5V = 100% of load)
Load locking input	Dry contact
Operating temperature	-10°c ÷ +50°c

Certificates

Download