3 - 4
MAINTENANCE
MAY 2020
32DFRE02.C
FR2E-SERIES SERVICE MANUAL
RSM0030600
CONTROLLER
55-PIN CONNECTOR
FIGURE 3-1: CONTROLLER
NOTE:
Voltage levels are 24 to 28 VDC in this application.
4.
INTERLOCK OUTPUT STATUS
The FoldOver Electric ramps has two ramp positions that are monitored by the controller. This position is fully
stowed to deployed position. The ramp must be in the fully stowed area before the electrical interlock output signal
will turn on (24VDC). This is done to reduce the possibility of a passenger tripping on the front edge of the ramp
when it is not stowed completely as well as preventing the bus from operating or moving when ramp is deployed.
Refer to
Table 3-3
. The status of the interlock output (GND or 12VDC/24VDC) occur when the ramp is either
STOWED or DEPLOYED. Note that the interlock output has both a normal and an inverted output. This table ap-
plies to the normal output.
TABLE 3-3: INTERLOCK OUTPUT STATUS
POSITION
INTERLOCK OUTPUT
STOWED
GND
DEPLOYED
12VDC/24VDC
End of Table
5.
CIRCUIT BREAKERS AND FUSES
The bus builder installs a 50-amp circuit breaker for 12V or 24V applications to protect ramp control circuits. Refer
to
Table 3-4
for harness fuses.
6.
ELECTRICAL DIAGRAMS
Refer to
Figure 3-2
for a description of plug and receptacle designations used on schematic.
