Beyond the cab: Making the case for remote controls

03 October, 2024

Overcoming remote control resistance

OEMs considering the addition of remote controls often have questions or concerns. Cost is sometimes a factor, particularly for base-level machines or those destined for the rental industry. A cost-benefit analysis or voice-of-customer study can help determine if the added value remote controls provide justifies the higher machine price. Another concern may be whether the devices will work in every country the machine is exported to, but many remote controls today operate on a universal 2.4 gigahertz radio frequency. Among the more frequent concerns, however, are safety and security, operator acceptance, and machine redesign.

From a safety perspective, machines need to be protected from unintended movement and access. Movement is covered by emergency stop functionality, which is standard on all remote-control transmitters. Look for performance level E certification, the highest possible safety rating for this function. The ability to integrate deadman switches, free-fall detection, tilt detection, two-handed/interlocking operation, and range limiters provide additional measures of protection. As for access, look for remote control suppliers with proven secure solutions and the inclusion of cybersecurity in product development and testing processes.

Operator familiarity and acceptance can be a challenge, as operators used to controls within the machine’s cabin may be reluctant to learn and use a remote control. To increase operator comfort and acceptance, it’s important to configure the transmitter in a way that mimics the controls look and layout within the cabin. This includes mechanism type and placement plus overall look and feel, such as icons and display design. Remote control configuration and programmable display capabilities are key to enabling this replication.

A key question in considering the addition of remote control capabilities is whether and to what extent the machine needs other design modifications. Fortunately, many machines today are ready for remote control integration as the basic requirements are minimal. The remote control receiver requires either digital control such as CAN bus, or it can be wired directly to the machine’s proportional valves and sensors. The receiver is capable of handling machine logic and direct control of valves. The solution depends on the machine, so look for a supplier with a flexible portfolio that can adapt to different types of machines and functions. This will minimize machine redesign needs.

Selecting the right solution

Remote controls are a combination of transmitter and receiver, with receivers typically being straightforward to specify. The primary choices are its connection to the machine – discrete outputs vs. CAN – and its voltage output control. Compact machines need compact receivers, and if the device will be inside a metallic enclosure, it may require an external antenna.

Transmitters can be a bit more involved to specify, but understanding a few key points will help determine the correct type for the application. For off-highway machinery, there are three common types of transmitters: handheld, pistol grip, and console box (also known as belly pack).