Furuno FAR-3320W Installation Manual page 88

2. WIRING
How to set ACK input (MC-3020D)
Use the connectors J3 to J6 on the to set the ACK input for ACK1 to ACK8 as shown
below.
• Input circuit for voltage input
DC voltage input
(21.6V to 31.2V)
• Input circuit for contact input
Use NH connector
and AWG24 wire.
Contact input
Note 1: The input must not exceed the range of the input voltage, to prevent malfunc-
tion.
-Setting for voltage input: 21.6V to 31.2V
-Setting for contact input: Voltage cannot be input (contact signal only).
Note 2: For analog input, see page 2-49.
Pin # Signal name
1 DC12V_OUT
2 DIGI_IN1
3 DIGI_RTN1
4 GND
(DC12V)
5 DC12V_OUT
6 DIGI_IN2
7 DIGI_RTN2
8 GND
(DC12V)
2-52
470Ω/ 0.5W
DC12V_OUT
+
DIGI_IN1
DIGI_RTN1
-
GND(DC12V)
470Ω/ 0.5W
DC12V_OUT
DIGI_INx
DIGI_RTNx
GND(DC12V)
Connector J3
In/Out Remarks
Out ACK1 In Pin #1-#2:
short
In
Out MPYC-12
In
Out ACK2 In
In
Out
In
12V
2.2kΩ / 1W
GND
Photocoupler circuit
GND
12V
2.2kΩ / 1W
GND
Photocoupler circuit
GND
ACK1 ACK1
contact voltage
No connec-
tion
MPYC-12
No connec-
tion
According to
ACK2 input
5V
Resistor
MC-DIN
Board
5V
Resistor
MC-DIN
Board
ACK2 ACK2
contact voltage
According to
ACK1 input
Pin #1-#2: No connec-
short tion
MPYC-12
MPYC-12
No connec-
tion