Elevator devices

Elevator load control device SenS Lift™

The next generation elevator load control device SenS Lift measures the signals from the load cells and is used to control the elevator’s load.

The device has between 1 and 6 independent measuring channels for full-bridge type load cells. Temperature compensation and digital signal processing are performed for every channel.

Sens Lift extends the functionality of the elevator load control device:

1. Simplified installation

Elevator load capacity is set at the site (standard load or user value).
Calibration is performed by saving empty car weight and for additional percision known weight (for example, installation personnel weight).

2. Simplified controls

The keyboard allows you to choose the data display mode, enter load capacity, calibrations and other data.
User-friendly English interface (other languages are optional).

3. Universal device for working with different load cells

The device can be used with various types of load cells:

floor (LA series)
wire rope (LB series)
machine bed frame (LD series).

4. Extended relay output functionality

The device generates dry contact relay output signals:

15/20 kg (helps to detect a child’s weight)

50% of net rated load (emergency evacuation)

90% of net rated load (optimization of the elevator)

110% of net rated load.

Relay output "15/20 kg" uses a polarized relay. In case of power outage this allows emergency lightning to go on when passengers are trapped inside.

5. Versatile power supply

The device power supply:

DC 24V
AC 110V, 50-60 Hz
AC 220V, 50 Hz.

Power consumption is less than 5 watts.

SENS LIFT WITH 4 FLOOR LOAD CELLS

Sens Lift with floor load cells is used on elevators with fixed floor and the following load capacities, kg:

400
630
1000
Value, set by user but not more than Net rated load (1,000 kg).

Specifications for SenS Lift with load cells under the floor

Parameters	Value	Limit
Gross rated load, kg	2,300	max
Net rated load, kg	1,000	max
Minimum load, kg	20
Total error, %	± 1	of net rated load
Power consumption, W	5	max
Power	AC 220V/50Hz AC 110V/50-60Hz DC 24V	±10%/±1Hz ±10%/±1Hz ±15%
Safe overload, % Net rated load	150	min
Working temperature, ˚С	from -20 to +50	range
Ingress Protection (according to EN 60529): load cell PVT-L SenS Lift device connecting box	IP67 IP20 IP54
Average full service life, years	25	min

Elements of SenS Lift with 4 floor load cells

Item	Dimensions, mm			Weight, kg
Item	Length	Width	Height	Weight, kg
Load cell PVT-L	200	80	50	0,72
SenS Lift device	135	135	32	0,30
Connecting box	70	26	24	0,05
Connection cable	5000	Ø8		0,32

SENS LIFT WITH WIRE ROPE LOAD CELL

Depending on the elevator’s load capacity, its design features and the number of wire ropes, SenS Lift with wire rope load cells can be calibrated to different load capacity.

Specifications of a single wire rope load cell

Parameters	Value	Limit	Notes
Operating load (OL), kg	1,000	max
Total error, % OL	1,0	max
Sensitivity, mV/V	2	-0,5/+0,2
Wire rope diameter, mm	8, 10, 12
Excitation, V	from 2,5 to 12	range
Input / output resistance, Ohm	400	± 4,0
Insulation resistance, MOhm	1000	min	DC 100В
Ingress Protection (according to EN 60529)	IP67	not worse than
Working temperature, °С	from - 35 to +70	range
Temperature coefficient °С, % OL	0,03
Safe overload, % OL	150	min
Ultimate overload, % OL	200	min

Net rated load of SenS Lift with wire rope load cells depends on the number of load cells.

Elements of SenS Lift with rope load cells

Item	Dimensions, mm			Weight, kg
Item	Length	Width	Height	Weight, kg
Rope load cel	126	22	60	0,30
SenS Lift device	135	135	32	0,30
Connecting box	70	26	24	0,05
Connection cable	5000	Ø8		0,32

SENS LIFT WITH MACHINE BED FRAME LOAD CELLS

SenS Lift LD series with machine bed frame load cells has the following characteristics in addition to the functionality of SenS Lift, LA and LB series:

1. Analog output to control the frequency drive, whose signal is proportional to the net weight. The analog output is galvanically isolated and can be configured as current or voltage output with different ranges.

2. In the formation of the control logic, a galvanically isolated logic input can be used, the input signal levels are from 24 V DC to 220 V AC.

Specifications of SenS Lift with machine bed frame load cells

Parameters	Value	Limit
Gross rated load, kg	4,000	max
Net rated load, kg	2,000	max
Minimum load, kg	15	max
Total error, %	± 0,5	of net rated load
Safe overload, % Net rated load	150	min
Ultimate overload, % Net rated load	300	min
Conversion cycle time, ms	100	min
Number of load cells	2
Outputs:
relay	4	AC 220V - 0,1A/ DC 30V - 3A
analog	1	current / voltage
Logical output, V	from 24 DC to 110 AC
Ingress Protection (according to EN 60529): load cells SenS Lift device	IP54 IP20
Working temperature, °С	from - 20 to +50	range
Power supply	24V DC 110V, 60Hz 220V, 50Hz	± 20 % ± 15 % ± 15 %
Power consumption, W	5	max
Service life, years	25	min

Elements of SenS Lift with machine bed frame load cells

Item	Dimensions, mm			Weight, kg
Item	Length	Width	Height	Weight, kg
Machine bed frame load cell	Ø 100		25	0,10
SenS Lift device	135	135	32	0,30
Connecting box	52	26	24	0,05
Connection cable	5000	Ø8		0,32