LLEC7 load weighing device

(v 1.0)

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

• 3 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
• External cover water protection (IPX2)

H1 – Fixing with screws
H2 – DIN rail fixing

System components

LLEC7 electronic control unit + external sensors

A) – External cover water protection (IPX2)
B) – LLEC7 electronic control unit

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

Optional components

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

code [EWS.AL212] – Power unit 220V

Installation

LLEC7 electronic control unit fixing

– Fixing with screws –

– DIN rail fixing –

Installation of car bottom sensors

Wiring Instructions

General description of the connectors

• A – Power supply input
  1 – Earth
  2 – GND
  3 – +12/24 Vdc
• B – Threshold 1 (by default 50% of the lift’s nominal load)
  1 – COM
  2 – NO
• C – Threshold 2 (by default 100% of the lift’s nominal load)
  1 – COM
  2 – NO
• D – Threshold 3 (by default 115% of the lift’s nominal load)
  1 – COM
  2 – NO
• E – Travelling cable compensation input / Block weight input
  1 – GND
  2 – UP_COMP
  3 – DW_COMP
  4 – BLOC_W
• F – Analog output
  1 – REF
  2 – OUT
  3 – GND
• G – CAN input (NOT used)
  1 – CAN_L
  2 – CAN_SHLD
  3 – CAN_H
• H / I / L / M – Sensor input 1 / 2 / 3 / 4
  N / O / P / Q – Sensor input 5 / 6 / 7 / 8
  1 – V+ (Excitation +)
  2 – S+ (Signal +)
  3 – S- (Signal -)
  4 – V- (Excitation -)

Power supply input

Connection of thresholds

• B) – Threshold 1 (by default 50% of the lift’s nominal load)
  1 – COM
  2 – NO
• C) – Threshold 2 (by default 100% of the lift’s nominal load)
  1 – COM
  2 – NO
• D) – Threshold 3 (by default 115% of the lift’s nominal load)
  1 – COM
  2 – NO
• Q) – Controller

Connecting sensors for travelling cable compensation

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.

• E – Travelling cable compensation input
  1 – GND
  2 – UP_COMP
  3 – DW_COMP
  4 – X (See the weighing lock function)
• T – Position sensors on the top of cabin

Connection of the weighing lock function

• E – Block weight input
  1 – GND
  2 – X
  3 – X
  4 – BLOCK_W

Connection of the elevator car bottom sensors

• H / I / L / M – Sensor input 1 / 2 / 3 / 4
  N / O / P / Q – Sensor input 5 / 6 / 7 / 8 (only with optional expansion board)
  1 – V+ (Excitation +) connected to the red cable
  2 – S+ (Signal +) connected to the green cable
  3 – S- (Signal -) connected to the white cable
  4 – V- (Excitation -) connected to the black cable

Calibration

Compensation procedure

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.

Menu		Options	Note
Menu language Italiano / English / Française / Deutsch / Español / Portugués / Russkiy
[▼]
Setting	[OK]	Calibration	System calibration
		Compensation	Travelling cables compensation
[▼]
Threshold	[OK]	Threshold 1 Threshold 2 Threshold 3 (optional)	Threshold 3 0 = Off • Min. 15 Kg. • NO/NC
[▼]
Configuration	[OK]	Compensation	You can manually change the parameters measured in the calibration and compensation procedure (included threshold NO or NC contact)

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

Troubleshooting

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.

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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

Reference	Version	Link
	2.3 (current version)	Download PDF (English)