Furuno ECDIS FMD-3100 Installation Manual page 45

How to set ACK input (MC-3020D)
Use the connectors J3 to J6 on the MC-DIN Board (24P0116) 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: The input must not exceed the range of the input voltage, to prevent
malfunction.
-Setting for voltage input: 21.6 V to 31.2 V
-Setting for contact input: Voltage cannot be input (contact signal only).
Pin
Signal name
#
1 DC12V_OUT
2 DIGI_IN1
3 DIGI_RTN1
4 GND (DC12V) In
5 DC12V_OUT
6 DIGI_IN2
7 DIGI_RTN2
8 GND (DC12V) In
470Ω/ 0.5W
DC12V_OUT
+
DIGI_IN1
DIGI_RTN1
-
GND(DC12V)
470Ω/ 0.5W
DC12V_OUT
DIGI_IN1
DIGI_RTN1
GND(DC12V)
Connector J3
In/ ACK1
Remarks
Out contact
Out Pin #1-#2:
short
In
ACK1 In
Out MPYC-12
Out
In
ACK2 In Depending on ACK2 input
Out
12V 5V
2.2kΩ / 1W
GND
Photocoupler circuit
GND
12V 5V
2.2kΩ / 1W
GND
Photocoupler circuit
GND
ACK voltage
No connection
MPYC-12
Depending on ACK1 input
No connection
Pin #1-#2:
short
MPYC-12
2. WIRING
Register
To internal
circuits
Register
To internal
circuits
ACK2 ACK2
contact voltage
No connec-
tion
MPYC-12
No connec-
tion
2-21