Connection Circuit - Sony LT10-105 Bedienungsanleitung

7-4. Connection circuit

Output circuit : Open collector output
Externally connected device (Connection Type 1)
Display unit
74LS06
OUT
GND
Output signal rating
On : V = MAX. 0.7 V (when output current I
OL
Off : V = MAX. 26.4 V (output current I
OH
Note
When connecting an L (coil) load such as a relay to output pins, be
sure to connect a back-voltage absorption diode in parallel with the
coil. Otherwise, the transistors inside the output IC may be damaged.
Externally connected device (Connection Type 2)
Display unit
74LS06
OUT
GND
• U s e a s w i t c h i n g d i o d e w i t h a b a c k - v o l t a g e o f
approximately 3 times the supply voltage (+COM) (80 V
back-withstand voltage with a supply voltage of 24 V).
+COM
IN
–COM
= 24 mA)
OL
= MAX. 250 µA)
OH
+COM
Relay
IN
–COM
Input circuit (#º pin DRQ) : Photocoupler input
Externally connected device (Connection Type)
Display unit
5V
330Ω
DRQ input
IN
GND
Input signal rating
On : V = MAX. 0.5 V (when input current I
IL
Off : V = MIN. 4.0 V to MAX. 26.4 V
IH
Input circuit (except pin #º DRQ) : TTL level input
Display unit
Start, reset, Measuring
5V
mode selection input,
and comparator
value selection input
1kΩ
47kΩ
IN
47kΩ
GND
Input signal rating
On : V = MAX. 1.0 V (when input current I
IL
Off : V = MIN. 4.0 V to MAX. 26.4 V
IH
OUT
–COM
= –15 mA)
IL
Externally connected device
(Connection Type)
OUT
–COM
= –5 mA)
IL
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