Wireless Crane Control System
Encrypted RF link, millions of operations in the field.
The problem in the field. On overhead cranes, a pendant control ties the operator to the area under the load and to the line of travel; festoon cable systems suffer from breaks, crushing and connection faults, and every fault means a production stop. Imported wireless remotes come with a fixed button layout, special functions (analog speed, extra relays, interlocks) cannot be added, and service is abroad. When several cranes work in the same plant, remotes triggering each other is a safety risk.
The solution. The Elmes crane control system carries commands from a handheld or belt-pack transmitter to the receiver in encrypted RF packets; the receiver's relay contacts connect directly to the contactors or drives. Every system has a unique ID, so transmitters with a different ID cannot affect the receiver. The emergency stop command is processed with priority; if the link drops or the battery runs out, the receiver releases its relays to a safe state. The operator controls the load from wherever they see it best.
Customization. 6–32 channels, two-speed buttons, joystick/analog speed, analog 0/4–20 mA and 0–10 V outputs (up to a receiver with 27 digital + 6 analog outputs), latch/momentary selection and reverse-button protection are configured per application. For non-crane machines such as concrete pumps, horizontal lifts and doors/barriers, the same hardware is offered as Wireless Machine Start & Control.
Features
- Emergency stop (E-Stop): mushroom button on the transmitter; a priority command that opens all relays on the receiver.
- Two-speed buttons: low/high speed with a two-stage press.
- Analog / joystick control: analog or digital joystick; 0/4–20 mA and 0–10 V analog transfer; 6 analog outputs on the receiver.
- Latch / momentary selection: latching or hold-to-run operation per channel.
- Pilot relay and reverse-button protection: opposite-direction interlock; forward and reverse cannot run at the same time.
- On/off lock: key-switch or code-protected start.
- Automatic signal cut-off on low battery plus charge/transmit LEDs.
- OLED display: optional.
- Multiple transmitters: more than one remote can be paired to the same receiver.
- TargetOn-screen status: RSSI, battery and active channel display.
- TargetSingle active remote lock: with multiple transmitters, a hand-over protocol keeps only one remote in control at a time.
- TargetDual-channel E-Stop path: separate safety relay with monitoring and an EN ISO 13850 button.
- TargetAutomatic channel switching: keeps the link alive by changing channels in noisy environments.
- TargetDual battery: a spare battery for uninterrupted operation.
- TargetOverload protection module: a wireless load-cell transmitter that locks the hoist channel when the load limit is exceeded.
- TargetMotion detection: automatic stop via accelerometer if the transmitter is dropped or turned over.
- TargetFunctional safety: EN ISO 13849-1 PL d / IEC 62061 SIL 2 for the E-Stop path.
System components
| Model code | Component | Description | Request a quote |
|---|---|---|---|
| TXI-VK200 | Handheld / belt-pack transmitter | 6, 8, 10, 16, 24 or 32 channels; emergency stop; two-speed button and joystick options | Request a quote: TXI-VK200 |
| RXO-RT207-27D-6AN | Receiver | Up to 27 digital + 6 analog outputs; relay contacts wired to contactors/drives | Request a quote: RXO-RT207-27D-6AN |
Specifications
| Frequency | 433 MHz ISM band; no frequency licence required |
|---|---|
| Control channels | 6 / 8 / 10 / 16 / 24 / 32 |
| Receiver outputs | Up to 27 digital + 6 analog outputs |
| Analog signal | 0/4–20 mA, 0–10 V |
| System ID | 65,000 unique IDs |
| Frequency band | 433.05–434.79 MHz, 8 channels; 868 MHz as an option onlyTarget |
|---|---|
| RF channels | 8 (200 kHz spacing)Target |
| Output power | +22 dBm, adjustable; within ETSI limitsTarget |
| Receiver sensitivity | −129 dBm @ SF11/BW125 (chip datasheet)Target |
| Modulation | LoRa SF7–SF9 (SF7 for low latency)Target |
| Data rate | ~5.5 kbps at SF7Target |
| Antenna connector | u.FL / SMATarget |
| Open field | ≥ 1000 m (SF7, 2 dBi antenna, 2 m height)Target |
|---|---|
| Industrial environment | ≥ 150 m indoorsTarget |
| Encryption | AES-128-CCM + counter (replay protection)Target |
|---|---|
| Addressing | 16-bit network ID + 16-bit address + device UIDTarget |
| Pairing | At the factory and in the field with a service toolTarget |
| Systems on the same site | ≥ 8 independent networks (channel × network ID)Target |
| Command latency | ≤ 50 msTarget |
|---|---|
| Fail-safe on link loss | ≤ 500 ms, adjustableTarget |
| Watchdog | Independent hardware watchdog (IWDG)Target |
| Receiver supply | 9–36 VDC; 230 VAC optionTarget |
|---|---|
| Receiver consumption | Depends on the number of relays |
| Transmitter battery | Li-ion 3.7 V, replaceable packTarget |
| Continuous operation | ≥ 48 hoursTarget |
| Charging time | ≤ 4 hoursTarget |
| Relay outputs | 8 / 16 relays; dedicated carrier board for the 27 + 6 class; 5 A / 250 VACTarget |
|---|---|
| Analog outputs | 2 (carrier board); 6 with an add-on boardTarget |
| Communication | RS485 / Modbus RTU optionTarget |
| Receiver enclosure | DIN-rail housingTarget |
|---|---|
| Transmitter housing | Industrial polycarbonateTarget |
| Ingress protection | IP65 transmitter, IP65 receiver boxTarget |
| Operating temperature | −20…+60 °C transmitter (battery), −25…+70 °C receiverTarget |
| Humidity | 5–95 %, non-condensingTarget |
| Warranty | 2 years; repair and spare parts in Ankara |
|---|---|
| Spare-parts support | 5 yearsTarget |