Reverse Mower Control (Rmc) Circuit Operation - Cub Cadet 2000 Series Professional Shop Manual

2000 Series Tractors

Reverse Mower Control (RMC) circuit operation

Historically, Cub Cadet residential mowers have not been able to mow in reverse. This has not been required by
any laws or safety regulations, it was just safer for our customers and those around them. Then in 2005, ANSI regu-
lations for residential mowers were changed, requiring that the mowing blades turn off when the mower was put in
reverse. The new standard did allow for a user controlled over ride system. This system must require two actions in
order for it to turn on. We introduced the Reverse Mower Control (RMC) system to meet these new standards.
We want to make sure that the operator of a mower with
Reverse Mower Control is always cognizant of the risks that
they take upon themselves by mowing in reverse. To
accomplish this, we make the operator take two distinct
actions: See Figure 7.36.
1. The operator must arm the RMC module by turning
the key switch to the Reverse Caution Mode position.
2. Once armed, the RMC module must be engaged by
pressing the orange triangular button on the front of
the module. When it is armed and engaged, a red
LED on the face of the module lights-up.
If the operator gets out of the seat, the mower has no way of knowing if the same person had gotten back into
the seat. For that reason, the module shuts-down and dis-arms itself whenever the seat is vacated. The person who
gets back in the seat must then re-arm the module by turning the key out of and back into the Reverse Caution Mode
position.
The easiest way to understand the RMC circuit is to
think of the RMC module as a switch that obeys com-
mands.
In normal operation, the reverse safety switch and one
set of contacts in the seat switch simply pass through the
module to connect with the yellow/black trace wire that
triggers the PTO relay by providing a ground for the wind-
ings. See Figure 7.37.
116
LED lit up
Figure 7.36
Figure 7.37