Furuno FAR-3220-NXT Installation Manual page 66

2. WIRING
How to set ACK input (MC-3020D)
Use the connectors J3 to J6 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 2-34.
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)
2-36
470Ω/ 0.5W
DC12V_OUT
+
DIGI_IN1
DIGI_RTN1
-
GND(DC12V)
12V
470Ω/ 0.5W
DC12V_OUT
DIGI_INx
DIGI_RTNx
GND(DC12V)
Connector J3
In/ ACK1
Remarks
Out contact
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
2.2kΩ / 1W
GND
Photocoupler circuit
GND
ACK1 voltage
No connection
MPYC-12
No connection
According to
ACK2 input
5V
Resistor
MC-DIN
Board
5V
Resistor
MC-DIN
Board
ACK2
ACK2 voltage
contact
According to
ACK1 input
Pin #5-#6: No connection
short
MPYC-12
MPYC-12
No connection