3-5
764333-268
These types of faults may appear on the main
hand control as a service wrench display but
are otherwise not available for troubleshooting
purposes.
c.
Battery power is protected by fuse F8 which is
located next to the foot pedal. It is in series with
(in between) the two batteries.
d.
Other fuses internal to the power supply are as
follows:
• Fuse F1 protects the battery charging circuit
for Battery 2+ at TB2.
• Fuse F2 protects line input power from
transformer to table control at TB4, hydraulic
pump and Tabletop slide motor.
• Fuse F3 protects the Tabletop slide motor
circuit at TB5.
• Fuse F4 protects the hydraulic pump circuit
at TB3.
• Fuses F6/F7 are the main input power fuses.
3. Floor Lock Control Board:
a.
The fuse F2 (surface mounted component,
nonreplaceable) is the center point of the circuit
dividing the lock control signal (left half) from
the unlock control (right half).
b.
Q1 is activated by a lock command signal from
the table control board and ties solenoid valves
Y71 (pressure) and Y73-Y76 to Battery (-). These
valves remain energized (flowing) until
pressure switch D2 (P2) opens from pressure
sensed in the floor lock manifold, as long as the
lock command from the table control board
continues to be present. Hydraulic pump motor
on-time exceeds the time it should take for D2
(P2) to close.
c.
Q2 is activated by an unlock command signal
from the table control board and ties solenoid
valves Y72 (tank) and Y73-Y76 to Battery (-).
These valves remain energized (flowing) until
the unlock command signal is removed by the
table control board. Q3 supplies Y73-Y76 with
Battery (+).
d.
Override switch SW1 bypasses pressure switch
D2 (P2). It may be manually held closed while
commanding the floor locks to be engaged for
cases where full extension of floor lock cylinder
rods is desired.
e.
Pressure switch D1 (P1) monitors the manifold
pressure for a minimum value and signals the
table control board if pressure drops below the
minimum.
4. The main valves manifold receives its signals from
the table control board at P21 and P22 to operate
articulations for Height, Trend, Tilt, Kidney, Back,
and Leg. The control sends 24Vdc signals to
solenoid valves to deliver hydraulic pressure to the
respective hydraulic cylinders.
5. The main hand control, optional surgeon foot pedal,
and e-Serve port connections at P3 of table control
board are mounted on a common connector plate
on the saddle cover. These provide primary table
control functioning with the main hand control or
surgeon pedal and the e-Serve port provides the
technician with PC connectivity for program
downloading to the table control board and also for
using the Cmax Service 1.8 or later Power Screen
diagnostics utility (later version master control
board).
6. The tabletop slide control board is mounted under
the saddle cover and operates the bi-directional
slide motor from 24Vdc directional signals received
from the table control board at P4. The board
receives battery power from TB6 on the power
supply.
7. Articulated table positions are sensed by the table
control board through switches and position
sensors. Sensor inputs must be calibrated for the
Auto Limit Sensor (ALS) system to work properly.
a.
The presence of a Leg section is detected by a
limit switch mounted in the leg section
receptacle.
b.
The Kidney elevator down position is sensed
by a limit switch mounted in the seat section
side member.
c.
The Slide and Height sensors are high
resolution rotating potentiometers. The slide
sensor is mounted under the seat section and
essentially measures the relative position of the
pinion gear to the rack gear. The height sensor
measures the relative position of the table to the
table base. The slide displayed on the screen is
the measurement relative to the calibrated zero
position. The height displayed on the screen is
the measurement from the tabletop to the floor.
d.
The Back and Leg section sensors are sliding
potentiometers. Leg Section sensor is mounted
to the side member of the seat section while the
Back section sensor is mounted to the side
member of the back section.
e.
The Trendelenberg and Tilt sensors are
individual single axis devices measuring
deviation from the perpendicular line relative
to true horizontal. Since these sensors detect
accelerations, they can be perturbed by sudden
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Страница 144: ...Page 5 of 14 Blue POINTER Indicates button user needs to push when selecting compatibility mode ...
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Страница 152: ...Page 13 of 14 Feature Matrix Table 4 shows the functionality available for each compatible Surgical Table ...
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Страница 162: ...Page 7 of 8 e Reconnect the energy chain to the mounting bracket f Reconnect Slide Sensor Cable to slide rail mount ...
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