5.3 Block Description
5-10
An alarm output is outputted with the contact signal: normally open when a message A,
B, D or L is received. By the use of the photo MOS relay, the output circuit provides
the maximum rated output of 50 VDC and 0.5 A.
The message A, B and L can be set to ON or OFF by the system setting. As for the
message D, an alarm is always output when this message is received.
Fig. 5.3.4 Alarm circuit
ALM BZ
Hit any keyALM Msg.
Received
Open
Close
5
4, 6
2
1
Q10
U17
G3VM 61E
+5V
ALM
Q4
U17
G3VM 61E
ALM
1. ALM H
2. ALM C
3. FG
4. SD
5. RD
6. SG
Normal Open
18V
ALARM BZ
ALARM
(MOS FET RL)
U8
CPU
P104
P95
NX-700B NX-7001
CPU(08P3225)
7. FG
8. NC
J403
50V 0.5A max.
EB3120A 35C150 12V
Backup battery
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