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Brake Remote Control

Hard-Line RRC

The brake release unit is used when a remote controlled machine is stuck in the stope with the brakes applied and no way to release them. The Hard-Line Remote Brake Release Unit was developed to allow an easy solution for this situation.

The operator types in a 4 digit code and then holds the release button on a compact transmitter. Each machine is equipped with a separate hydraulic pumping system and a hydraulic circuit to release the machine’s brakes. Once the brake pressure is met, the hydraulic pump is stopped. If the hydraulic pressure drops, the pump automatically re-starts. When the operator releases the button, the brakes will reapply.

• The perfect solution to a common problem

• Can be retrofitted to any machine

• Built-in fail-safe coding, ensuring operator safety and control

• Testing and diagnostics are built into the system

• Does not rely on physical, mechanical components which stick over time

Wireless Medium: Direct Sequence Spread Spectrum Radio

Opening Frequency Range: 902-928 MHz

Approvals: USA: FCC 15.247, Canada: 2311101331A3 17

Radio Data Rate: Up to 860 Kbps (FCC, CANADA)

Maximum Radio Data Rate: 1.35 Mbps (not FCC approved)

Frequency Resolution: 300 kHz

Frequency Stability: +/- 5kHz

Chipping Rate: Selectable up to 9.457 Mcps

Spread Ratio (min/max): 5:1 / 50:1

Processing Gain (min/max): 11 dB / 17 dB

Output Power: +26.5 dBm / 450 mW

Sensitivity (@ 10-5 bit error rate): -95 dBm@215 Kbps, -87 dBm@860 Kbps

Adjacent Channel Rejection: 23 dBc

Receive/Transmit Turnaround Time: 1 ms

Modulation: BPSK

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  • Brake Release Unit
  • Stuck LHD
  • Hard-Line RRC