82-S0531 Dual Planetary Gear Motor Sync
NOTE
Note: All the harnesses
need to stay plugged in
during this test.
Step 3: Checking the first encoder signal. There are 2 signal wires per encoder. See note
to left.
Set multi-meter to AC Volts, and while the room (use override mode) is moving back probe at the
controller sensor connection. For the motor 1 encoder, probe between the "SEN-GND" and "SEN
SIG 1" at motor 1 connector. For the motor 2 encoder probe between the "SEN -GND" and "SEN
SIG 1" at motor 2 connector.
See Figure 3. This should be a steady AC signal. If there is a steady AC Voltage, proceed to
step 5.
CAUTION
During emergency retract
mode the control has no
stop locations. Damage
to the bunk can occur
during over travel of the
bunk lift rails. Do not
allow rails to become too
far out of sync with each
other. This will cause the
bunk to bind and may
cause damage to the
slide-out rail.
WARNING
If the bunk was moved
while the encoder was
unplugged, the room
stops will need to be
reset. Consult the correct
manual or TIP Sheet for
the proper procedure.
Step 3 Continued: Checking for the second encoder signal.
Set multi-meter to AC Volts, and while the room (use override mode) is moving, back probe at
the controller sensor connection. For motor 1 encoder probe between the "SEN-GND" and
"SEN SIG 2" at motor 1 connector. For motor 2 encoder, probe between the "SEN-GND" and
"SEN SIG 2" at motor 2 connector. See Figure 4. This should be a steady AC signal. If there is
a steady AC Voltage, proceed to step 5.
Step 4: Checking the harness continuity and all connections.
If there is no voltagereadingfrom theencoderor the AC Voltage reading was NOT steady,
check the following:
A: Check the continuity of the harness between the control box encoder pinsand the motor
encoder pins. Ifthe harness does not have continuity, then replace the bad wire, or the
harness. The harness can also be checked from pin to pin for continuity,and from each pin
to ground. There should notbe continuity to ground, or pin to pin.
B: Check the connectionsat the motor and control box.Repair any loose connectionsorloose
pins. Ifthe continuity of all the harness wires tests good, and connections are good,then replace
the motor assembly. See the motor labelforthe PowerGear part number for replacement.
Step 5: If the tests instep 3 show asteady AC Voltage at the controller sensor connection,
please contact Lippert Components at www.lci1.com for further diagnostic.
