1485 Jacobs Rd.
Deland, FL 32724
386.738.7307
P/N 53-00306-100 Rev. B 032119
www.intellitec.com
Intellitec
SERVICE MANUAL
MPX SOFA CONTROLLER
PRODUCT DESCRIPTION
HOW IT WORKS
SETTING THE STOP ADJUSTMENT
The
is intended for use in conversion vehicles to control the operation of a two way or four
way, slide-recline power sofa. It allows easy wiring of multiple switches and provides electronic shutdown at the end of
travel to prevent annoying circuit breaker or fuse openings.
The
System requires only one light-gauge wire and ground to connect multiple switches. The control is
normally located near or on the sofa so the four motor wires can easily be connected. A single 12 gauge wire feeds power
to the control from the fuse block.
To operate the sofa, the three position, momentary rocker switch is pressed and held in the direction of the function desired
(slide or recline.) If the direction is wrong, the switch is released and pressed again. After the sofa has reached its desired
position, the switch is released.
If the switch is held until the sofa reaches its mechanical stops, the control will
automatically shut off the power. This feature also prevents damage to the sofa if it is operated with someone sitting on it.
The
utilizes relay switching to control the power to the two sofa motors (See Figure 1). To
limit the amount of current drawn, only one motor is allowed to operate at any given time. When the unit is at rest, all the
motor leads are connected to ground. The controller applies 12 volts to the selected sofa motor to operate the sofa.
To prevent damaging the motors or opening of the fuse or circuit breaker, the controller senses the current drawn by the
motors. If the current exceeds a preset level, the controller shuts off. To restart the motor, release the switch and press it
again. This will reverse the direction.
The controller operates by sensing the voltage on the
bus wire. When the
bus is at 12 volts, the
motors are at rest. When the bus is at 6 volts, the controller drives the Recline motor. When the bus is at 0 volts, the
controller drives the Slide motor. (Note: This voltage must be read with a voltmeter. A test light will offer too much load for
this circuit). If more than one switch at a time is pressed, the sofa will operate in the Slide mode.
The
is used to set the level of current, above which the motor will shut off. The control's proper adjustment
is at a level that is sufficient for proper operation of the sofa, but not so high as to overload the fuse or circuit breaker.
Start the setting procedure with the control set in the approximate center of rotation. Operate the sofa, both slide and
recline, through the full range. (Lifting the back from its open position usually requires the maximum current). If the sofa
stops prematurely, slightly increase (turn the control clockwise) the setting and test again. If it is hitting the stops too hard,
decrease (turn the control counter clockwise) the setting.
MONOPLEX SOFA CONTROL
MONOPLEX
MONOPLEX SOFA CONTROL
MONOPLEX
MONOPLEX
STOP ADJUST
2
