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What to expect during normal operation and general use tips
MARC products were designed to take extremely complex technology and make it simple. The simplicity allows users to
easily and quickly engage the use of these carts and speed adoption. This will help MARC products offer an ROI at a
much quicker pace.
Here are some things to expect during normal operation and best practices.
• The cart will show white LEDs in the direction it is travelling ( similar to headlights) and red LEDs in the opposite
direction (similar to taillights). Once the cart has arrived at a de stination, the LEDs return to pulse green.
•
In environments that change often you may find Active Map Mode will perform better as in this mode the mapped
area is continuously updating.
• MARC units are capable of navigating through some narrow passageways, but it is recommended that the
minimum width of open space along the entire programmed path be at least 6 feet.
• The cart may speed up and slow down frequently when travelling between destinations. This is normal behavior as
the mapping and route planning software is continuously looking for the best possible route. The cart may also
back up, rotate and/or turn around during normal operation.
• The cart will prioritize the path that was used during programming. If you have an area that you prefer the cart to
avoid, do not use that path during the mapping (programming) process.
•
If the cart is sent on an incline of more than 10°, the tilt sensor will automatically stop motion and wait for user
intervention. This is by design and is a safety feature. An over-tilt red check engine light will be displayed until the
user moves the cart back to a flat surface.
•
The cart has been programmed to come within 1 meter of the destination. Within the 1m arrival, orientation of the
cart may be different than when it was initially programmed.
• If the cart encounters an obstacle that blocks its path, the tone will be heard as it attempts to recalculate a path.
• If the cart cannot reach its destination and is prevented from progressing anywhere in its path for more than 45
seconds, the cart will indicate that it has abandoned its route. The cart will announce “Route abandoned” and the
indicator LEDs w ill pulse orange. The audible announcement will repeat every 30 seconds until the condition is
resolved by the operator. The numbered station button will flash indicating the desired destination.
• If the battery is low, the cart will indicate the current le vels as follows:

For battery voltages below 20%, it will say “Battery low” and will repeat this message every 30 seconds.

For battery voltages below 10% the indicator LEDs will cycle between red, green and blue and the cart will
continue to announce “Battery low.” Note that other indication colors and sequences will not be shown
when the critical battery status is reached.

In both battery warning states, the cart can still be used. When the battery is completely discharged, the
cart will shut down completely.

Pressing the battery button for more than 3 seconds will silence the battery low audio cues.

When MARC is powered down in Active Map Mode, destination and mapping information will be lost.
Rebooting MARC in Active Map Mode, including after changing the battery, will require remapping and
saved destinations to be reprogrammed.
• The cart will generally not explore unknown areas. However, you may find the cart will take a path to a destination
you were not expecting. If during the scanning of your facility the cart senses an alternative path that has been
mapped is shorter, it may take that path.
• When multiple MARC units are in the same area, you may notice they occasionally interact strangely. This is normal
behavior since both are considered dynamic obstacles and are trying to avoid each other in a safe manner.