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 With Radio systems, there are several factors to take into consideration when choosing radio as a transmission medium for a remote control system. Radio signals can pass through solid objects so that the operator can quite easily be out of sight of the machinery being controlled. This creates an obvious safety hazard for workers in the vicinity of the lifting operation and has the potential to inadvertently cause damage to plant, machinery and production.
Some radio transmissions can be affected by interference especially in an electronically polluted industrial environment where electrical equipment in use in the vicinity can produce electromagnetic interference or spurious signals. Illegal high power Radio transmissions can also have an adverse effect in such situations where frequencies match or harmonically conflict with the approved remote control system frequency. With COMMANDER system technology, shutdown would occur in circumstances of high electronic pollution, radiated and illegal emissions.
Although radio has the advantage in some circumstances of long distance control, there are usually a limited number of systems that can be used on a single site within the permitted Radio bandwidth allocated by the relevant licensing authority. COMMANDER systems also incorporate address coding which means that each frequency or channel can be used a considerable number of times in conjunction with this coding method providing that adjacent systems are of a different frequency and address code.
 With COMMANDER systems, maximum safety and performance is achieved by overcoming some of the safety hazards associated with Radio based signalling systems by the incorporation of one of the following options. COMMANDER Radio systems can incorporate IRSUL (Infra-Red Start Up Link (CloseStart) which ensures that the operator can only start the remote control system within a specific pre-set range, or the longer range in sight Ranger enabling system. Both options provide a very high degree of range control whilst at the same time give the operator the freedom associated with Radio based systems. |
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