- 7 -
Phone jack
for ON/OFF
control in
manual mode
Phone plug
Power supply
(rear view)
Write sequence
B8 (EXT)
B11 (channel selection)
1. External control mode (B8: EXT) outputs in negative logic (Low: L).
2. The channel selection bit B11 output (Low: CH 1, High: CH 2)
3. Light intensity data (B0 to B7) output in negative logic (Low: L)
4. The write bit is output (data is written when the write signal is fall edge).
Keep the write signal HIGH after the data is written.
5. Data entry cycles must be 500µs or longer.
ON/OFF control in Manual mode
1. In manual mode, the external ON/OFF control is available
for the product.
2. Insert the phone plug into the phone jack to send the
ON/OFF control signal for manual mode.
Note: Control is limited strictly to turning lighting ON and OFF.
Note: This option is not available when light intensity is externally
controlled.
Phone jack (Ø3.5) signal line
OFF
ON
Overcurrent protection
NPN open collector ON
>100µs
>100µs
NPN open collector OFF
Light intensity data CH 1
NPN open collector ON
Light intensity data CH 2
>100µs
CH.1 CH.2
INT EXT
B0 to B7
( 8 bits)
Write bit B9
(WR)
≧
300µs
≧
300µs
Overcurrent protection output
The overcurrent protection output is a monitoring signal that
becomes active when overcurrent is detected. It is an output
from bit B13. Output circuit is an open collector, with negative
logic (active Low).
The product output stops if lighting current consumption (total
of all channels) exceeds 107% of the rated current
consumption. Also, the error indicator lamp on the front panel
of the power supply will light and output cannot be resumed
until the power supply is restarted.
>100µs
Summary of Contents for PD2 Series
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