Jingcheng trademark 宜昌竞成电子科技有限公司 Yichang Jingcheng Electronics Co., Ltd. LMI & Crane Safety Systems
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Control systems & human interface

JC-717

Control meter

Cab terminal showing load percentage, radius, boom length and angle, with staged alarms and control output.

Display · panel mounted
Supply
12 V DC & 24 V DC
Display
7 in
Resolution
1024 × 600
Power
< 15 W
Interfaces
RS485 & RS232
Enclosure
ABS & cast aluminium
Outline
208 × 145 × 55 mm
Operating
−20 ℃ to +60 ℃
Storage
−30 ℃ to +80 ℃
Protection
IP66 outdoor build, IP20 indoor
JC-718

Control meter, remote alarm

Adds a remote or outdoor audible and visual alarm on top of the local one, for tandem work and activity around the machine.

Local + remote alarm
Supply
12 V DC & 24 V DC
Display
7 in
Resolution
1024 × 600
Power
< 15 W
Interfaces
RS485 & RS232
Enclosure
ABS & cast aluminium
Outline
208 × 145 × 55 mm
Operating
−20 ℃ to +60 ℃
Storage
−30 ℃ to +80 ℃
Protection
IP66 outdoor build, IP20 indoor
JC-800

Flush-mounted

Sits level with the cab panel and needs a cut-out; suits new builds or cabs where the panel may be modified.

Cut-out · level fit
Supply
12 V DC & 24 V DC
Display
7 in
Resolution
1024 × 600
Power
< 15 W
Interfaces
RS485 & RS232
Enclosure
ABS & cast aluminium
Outline
208 × 145 × 55 mm
Operating
−20 ℃ to +60 ℃
Storage
−30 ℃ to +80 ℃
Protection
IP66 outdoor build, IP20 indoor
JC-802

Surface-mounted

Carries its own enclosure on a rear plate, fixing to the cab wall or a bracket, so retrofits leave the original panel intact.

Own enclosure · retrofit-friendly
Supply
12 V DC & 24 V DC
Display
7 in
Resolution
1024 × 600
Power
< 15 W
Interfaces
RS485 & RS232
Enclosure
ABS & cast aluminium
Outline
208 × 145 × 55 mm
Operating
−20 ℃ to +60 ℃
Storage
−30 ℃ to +80 ℃
Protection
IP66 outdoor build, IP20 indoor
JC-805

Explosion-proof

For flammable gas or dust atmospheres — tank farms, chemical quays, mining. The protection concept is selected against the duty.

Selected by duty
Supply
12 V DC & 24 V DC
Display
7 in
Resolution
1024 × 600
Power
< 15 W
Interfaces
RS485 & RS232
Enclosure
Stainless & cast aluminium
Outline
Custom
Operating
−20 ℃ to +60 ℃
Storage
−30 ℃ to +80 ℃
Protection
IP66
JC-901

Acquisition box

Where the machine's sensor wiring lands, with analogue and digital channels keyed per channel. Stainless and cast aluminium enclosure.

Stainless / cast aluminium
Supply
12 V DC & 24 V DC
Power
< 15 W
Interfaces
RS485 & RS232
Enclosure
Stainless & cast aluminium
Outline
256 × 178 × 70 mm
Operating
−20 ℃ to +60 ℃
Storage
−30 ℃ to +80 ℃
Protection
IP67
Digital inputs
2 channels
Digital outputs
4 channels
Analogue inputs
5 channels
JC-780

All-in-one

Collection and display in a single unit with minimal wiring, suited to fixed-duty machines and volume fitting.

Integrated · minimal wiring
Supply
12 V DC & 24 V DC
Display
7 in
Resolution
1024 × 600
Power
< 15 W
Interfaces
RS485 & RS232
Enclosure
ABS & cast aluminium
Outline
208 × 145 × 55 mm
Operating
−20 ℃ to +60 ℃
Storage
−30 ℃ to +80 ℃
Protection
IP66 outdoor build, IP20 indoor

Sensors & accessories

LENGTH

Draw-wire length sensor

Tracks telescoping in step with the boom; cable 15–100 m, 2–6 core, thickened shell and double-spring slewing, angle sensor optional.

LENGTH + ANGLE

Length and angle, paired

Radius is solved from length and angle at one instant, so the two ship and calibrate as one channel map.

ANGLE

Angle sensor

Measures boom luffing and body tilt — the basis for radius and stability.

LOAD

Load cell family

Pin, shear, block and cylindrical forms covering main and auxiliary hooks; made for construction and port machinery, customisation available.

DISPLACEMENT

String-type transducers

Multiple stroke sizes with matching ball floats for travel and position duties, landed on the collector per its channel map.

PRESSURE

Hydraulic pressure sensor

Derives load from circuit pressure without touching load-bearing structure — common on retrofits.

ENCODER

Encoder

On the drum or slew drive, giving height, falls and slew angle. Supply 12–24 V, shaft 6 / 8 mm.

OVERWIND

Anti two-block device

Counterweight or limit-switch execution, alarming and locking out before the block reaches its limit.

LIMIT

Height limit switch

Sets upper and lower limits, gating motion and zoning.

WIND

Anemometer

Range 0–60 m/s at ±0.3 m/s accuracy, fitted at the boom tip or portal head; all-metal aluminium shell, IP65, immediate alarm. Wireless version available.

ALARM

Tri-colour beacon

Turns staged alarms into something everyone around the machine can see; 220 VAC / 24 VDC, buzzer optional.

VIDEO

Camera monitoring

Cameras and the recorder are established industrial hardware integrated into our system; the load-moment system itself is designed and calibrated in-house and shares its display and alarm path with them. Blind-spot and hook visibility, useful for tandem picks.

MOUNTING

Mounting brackets

Sensors are only as good as their datum — 304 stainless ceilings, flanges and arms, made per machine and shipped with the order.

See which inputs each machine class needs

Published specifications

The figures below are the company's published general values. Where a specific model or configuration differs, the shipping documentation and the quotation govern.

Published values · by family
ItemSpecificationNote
Encoder Supply 12–24 V; output RS485 / 4–20 mA / 0–5 V; shaft diameter 6 mm, 8 mm Applied to rope-length and telescopic extension measurement
Boom length sensor Cable length 15–100 m; 2 to 6 core cable Thickened shell, double-spring slewing; angle sensor selectable mechanical, electronic or omitted
Anemometer Range 0–60 m/s; accuracy ±0.3 m/s; protection IP65; output voltage, current or other communication All-metal aluminium shell; wireless variant available
Tri-colour beacon Voltage 220 VAC, 24 VDC; audible and visual alarm output Customisation available
Load cell Pin type and shear type constructions For construction and port machinery and specialised crane accessories; customisation available
Pressure sensor Load derived from hydraulic circuit pressure Suited to retrofits where a pin swap is not possible
Collector JC-901 Stainless and cast aluminium enclosure Analogue and digital channels keyed and labelled by sensor type
Terminal JC-718 Local audible and visual alarm plus remote or outdoor alarm Interlocked with the beacon
Terminal display 7 in Size confirmed per model
Comprehensive accuracy ±2.5% System-level figure, not a single-sensor rating
Operating temperature −20 ℃ to +60 ℃ Ambient range for the assembled system
Outdoor protection IP66 Rating for outdoor-mounted parts
Mounting brackets 304 stainless steel; ceiling and flange forms Explosion-proof stainless variant available
Anti two-block device Implemented through a limit switch Landed on a digital channel of the collector
Documents with the order Each order carries the configuration list, channel definition and calibration method. Dimensional drawings are issued for the actual selection, not as a generic manual.

Technical data

Mounting dimensions, channel definitions and calibration method are issued with the quotation. Tell us the machine and what you need monitored — we send files for that configuration, not a generic manual.

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