JRC JMA-933B User Manual

3-17
3.10 Connect with Alarm Monitoring System
This radar display unit has input/output functions for various contact signals
intended for alarm monitoring system. Connect necessary signals by referring to
the inter-board connection diagram.
Terminal
block
Signal
name
Direction Description Notes
CQD-2121
TB303
SYS ALM OUT System alarm status is outputted. Becomes “Normal-Close” in
connecting with NC. Becomes
“Normal-Open” in connecting with
NO.
CQD-2128
TB604
ARPA
ALM
OUT Dangerous ship alarm status is outputted. Ther logic can be reversed with
short plug of TB1. The default is a
Normal-Close (2-3).
CQD-2121
TB303
PWR ALM OUT Disonnection of Ship’s Main is detected.
CD24V must be connected to YCBD-1832
for backup.
Becomes “Normal-Close” in
connecting with NC. Becomes
“Normal-Open” in connecting with
NO.
CQD-2121
TB303
SYS ACK IN Acknowledge input of system alarm. “False” indicates Open or
Disconnection and “True” indicates
Closed.
CQD-2128
TB604
ARPA
ACK
IN Acknowiedge input of Dangerous ship
alarm.
“False” indicates Open or
Disconnection and “True” indicates
Closed.
CQD-2121
TB303
PWR ALM IN Acknowiedge input of PWR alarm. “False” indicates Open or
Disconnection and “True” indicates
Closed.
CQD-2121
TB304
WMRST OUT Watch Man alarm reset signal.

JRC JMA-933B Specifications

General

Brand	JRC
Model	JMA-933B
Category	Radar
Language	English