Dehydrator alarms
Pin assignments of the alarm port on the system control board of RTN 980 L
•Install the alarm signal cable based on the interface-cable mappings and pin assignments described in the tables
above.
12 11 10 9 8 7 6 5 4 3 2 1
15 14 13
System control
board of the IDU
Alarm signal cable
Orange
Orange and white
Green and white
Green
Port No.
Wire Color
Alarm
Peer Pin in the Alarm Port
7
Orange and white
POWER FAIL NO
1
8
Orange
POWER FAIL COM
2
13
Green and white
SUMMARY NO
3
14
Green
SUMMARY COM
6
Pin
No.
Wire
Color
Alarm Output
Pin
No.
Color
Alarm Output
1
Orange
and
white
Alarm signal input 1
5
Blue and
white
Ground end of alarm signal
input 3
2
Orange
Ground end of alarm
signal input 1
6
Green
Ground end of alarm signal
input 2
3
Green
and
white
Alarm signal input 2
7
Brown and
white
Alarm signal output (+)
4
Blue
Alarm signal input 3
8
Brown
Alarm signal output (-)
49
2
Dehydrator Alarm Cable Connections