107
Sirius-PJ1Training
Slide 107
Lamp Control
COVER
SW
Bi-metallic
POS
W
PO
BM
SW_PWB
EX_PWB
MAIN_PWB
PO
EX
IC 4502
TightCell2
Gate Array
IC4001
SH7670
CPU
Local Bus
FANDET1~8
POLM
BALLAST UNIT
LAMP
HOUSE
LAMP
HOUSE
LAMP
HOUSE
RXD_LAMP
TXD_LAMP
LAMP_PW
COVER_DET
LAMPHOT
Lamp on/off is controlled by High/Low of TightCell2 (IC4502)'s Port: LAMP_PW
signals. Also, the lit status monitoring and brightness are controlled by the serial
communication function of TightCell2 (TXD_LAMP/RXD_LAMP). The LAMP_PW
signal's lighting control is enabled only when the status of lamp cover, bimetal,
and fan are in the normal state. In other cases, TightCell2 will detect the
mechanical signal (COVERDET/LAMPHOT/FANDET1~8) and turn off the lamp.
Also, there is an ECO Mode and this controls the lamp power as follows:
¾
When ECO is OFF: Lamp power is 100%
¾
When ECO is ON: Lamp power is 80%