
Electrical System
Chapter 3: Theory of Operation
more than a minute or so, self-resetting fuses (PTCs) interrupt the power
connection to the motor controller. As with the switch opening, the motor
controller will bring the drive motor to a stop. To manually push the bed in
either of these circumstances, the drive wheel can be stowed or the manual
override switch can disconnect the motor from the short to release the brake.
Upon sufficient cool off time for either the thermal switch to close or the PTCs
to reset, if the override switch is closed, power assist can be resumed.
Battery Shut-off
The gas gauge chip monitors the battery voltage. When the chip detects the
battery at its end of discharge voltage, the logic de-energizes the battery
connect relay. This disconnects the battery to prevent it from further
discharging.
Also, the PACM includes an input for a manual shut-down switch. If this
switch is closed for approximately 6 seconds, the shut-down logic is armed.
Opening the switch causes the logic to de-energize the battery connect relay.
This disconnects the battery from the electronics. In the event of a stuck shut-
down switch, that is, one failed closed, the logic will be armed but never
triggered, preventing nuisance shut-downs.
Deployment Motor
The deployment motor is a 24 VDC linear actuator with internal normally
closed limit switches to indicate full travel in the extended and the retracted
position. The motor circuit is separate from the limit switch circuit so that the
driver circuit can shunt the motor to provide higher holding force. The logic
can monitor the limit switches to correctly control the driver circuit.
Drive Motor
The drive motor is a 24 VDC, insulation class H, permanent magnet gear
motor producing approximately 180 in-lb. of torque at 35A. The drive motor
incorporates a Klixon®
1
YS11 style thermal switch attached to the inside of the
motor housing and characterized to open if the temperature of the motor
housing reaches 2012 °F (1100C). This temperature was chosen to track the
motor winding at a safe operating temperature.
Battery Capacity Indicator
The battery capacity indicator contains one amber LED to indicate bed power
applied or an energized battery relay and five green LEDs to indicate the
1. Klixon® is a registered trademark of Texas Instruments, Inc.
3
VersaCare™ Bed Service Manual (MAN333 REV 2)
Page 3 - 15
Содержание VersaCare P3200
Страница 2: ......
Страница 6: ...Revisions NOTES Page iv VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 18: ...NOTES Page xvi VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 34: ...Warning and Caution Labels Chapter 1 Introduction NOTES Page 1 16 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 270: ...Exchange Policy Chapter 5 Parts List NOTES Page 5 4 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 272: ...Warranty Chapter 5 Parts List NOTES Page 5 6 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 275: ...Recommended Spare Parts Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 9 ...
Страница 276: ...Base Frame Chapter 5 Parts List Base Frame Figure 5 2 Base Frame Page 5 10 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 279: ...Base Frame Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 13 ...
Страница 281: ...Casters Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 15 ...
Страница 291: ...Head Siderail Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 25 ...
Страница 295: ...Siderail Center Arm Assembly Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 29 ...
Страница 299: ...Power Supply Sheet 1 of 2 Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 33 ...
Страница 306: ...Air Module Chapter 5 Parts List Air Module Figure 5 14 Air Module Page 5 40 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 311: ...Sensor Strips Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 45 ...
Страница 312: ...Sleep Deck Chapter 5 Parts List Sleep Deck Figure 5 18 Sleep Deck Page 5 46 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 325: ...Treatment Surface P3251EA Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 59 ...
Страница 337: ...Labels Sheet 2 of 2 Chapter 5 Parts List NOTES 5 VersaCare Bed Service Manual MAN333 REV 2 Page 5 71 ...
Страница 338: ...CPR Cable Chapter 5 Parts List CPR Cable Figure 5 27 CPR Cable Page 5 72 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 340: ...CPR Cable Chapter 5 Parts List NOTES Page 5 74 VersaCare Bed Service Manual MAN333 REV 2 ...
Страница 363: ......
Страница 365: ...Electronics Schematic P3200 Sheet 1 of 3 Chapter 3 ...
Страница 366: ...Electronics Schematic P3200 Sheet 2 of 3 Chapter 3 ...
Страница 367: ...Electronics Schematic P3200 Sheet 3 of 3 Chapter 3 ...
Страница 368: ...Motor Control P C Board Schematic PN 68717 Chapter 3 ...
Страница 369: ...Logic Control P C Board Schematic PN 69378 Chapter 3 ...
Страница 370: ...Siderail Controls Schematic Chapter 3 ...
Страница 371: ...Optional Controls Schematic Chapter 3 ...
Страница 372: ...Patient Controls Schematic Chapter 3 ...
Страница 373: ...Patient Pendant Schematic Chapter 3 ...
Страница 374: ...Power Supply PN 72289 Sheet 1 of 2 Chapter 3 ...
Страница 375: ...Power Supply PN 72289 Sheet 2 of 2 Chapter 3 ...
Страница 376: ...Motor Control P C Board PN 72273 Chapter 3 ...
Страница 377: ...Power Supply P C Board PN 70786 Sheet 1 of 2 Chapter 3 ...
Страница 378: ...Power Supply P C Board PN 70786 Sheet 2 of 2 Chapter 3 ...