GE Brivo OEC 715, Service Manual

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Brivo OEC 715/785/865/865 Mobile C-Arm X-Ray Product Service Manual
2-48
Communication with MCB and Collimator
DAC7554 is used to output 3 analog channels and its control accuracy is 12-bit. It shall be controlled by MCB
through SPI, in order to generate collimator-motor- target-position control signal. There are 3 motors in
collimator, which are IRIS motor, shutter width motor and shutter rotation motor. Therefore, DAC in CCB shall
support 3 independent channels. Meanwhile, CCB transmits 3 motors’ position feedback (analog signal) to MCB
directly. Through the PID adjustment, the motor driver can control the motor properly.
Interface
Signal Name Description Scale Direction Connector. Pin
SPI_DIN_CCB One termination of Emergency
switch1/input
0/+15V Digital input J1.a11
SPI_SCLK_CCB The other termination of
Emergency switch1/input
0/+15V Digital input J1.a12
SPI_SYNC_CCB One termination of Emergency
switch2/input
0/+15V Digital input J1.a10
RSV_CCB Connected to MCB for
reserve/input
0/+15V Digital input J1.b12
INTERLOCK_COM System inter lock 0/+15V Digital input J1.a13
INTERLOCK_COM System inter lock 0/+15V Digital output J1.b14
IRIS_POS_F Transmit IRIS motor position
analog feedback to MCB/output
0~5V analog output J1.b13
SHUT_ROT_POS_F Transmit shutter rotation motor
position analog feedback to
MCB/output
0~5V analog output J1.b10
SHUT_WIDTH_POS_F Transmit shutter width motor
position analog feedback to
MCB/output
0~5V analog output J1.b11
GND_15V +15V Ground n/a n/a J1.c9,
GND_15NV -15V Ground n/a n/a J1.a9, J1.b9
GND_5V +5V Ground n/a n/a J1.a4, J1.b4
J1.c4
+15V +15V power supply/input n/a Input J1.c15, J1.c16
-15V +15V power supply/input n/a input J1.a15, J1.a16
+5V +5 V power supply/input n/a input J1.a5, J1.b5, J1.c5
SHUT_WI Shutter width motor +/output output J1.c2
SHUT_WIDTH_MOT- Shutter width motor -/output output J1.c3
SHUT_ Shutter rotation motor +/output output J1.b2
SHUT_ROT_MOT- Shutter rotation motor -/output output J1.b3
I IRIS motor +/output output J1.a2
IRIS_MOT- IRIS motor -/output output J1.a3
SHUT_WIDTH_POS Shutter width position
feedback/input
0~5V analog input J1.c12
SHUT_ROT_POS Shutter rotation position
feedback/input
0~5V analog input J1.c11
IRIS_POS IRIS position feedback/input 0~5V analog input J1.c10
COL_P CollimAtor potentiometer
ref
+5V
±
1%/5mA power
output
J1.b1
COL_POTS_REF- CollimAtor potentiometer
reference -
Analog ground n/a J1.a1