Optional fan alarm procedure, Figure 2-3. alarms wire-wrap field (tb2), Figure 2-3 – ADC HiGain HMS-318 User Manual
Page 40: Step action
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Optional Fan Alarm Procedure
Figure 2-3. Alarms Wire-wrap Field (TB2)
Note:
The FAN terminals wire-wrap field provides access to the Normally Open (NO), Form A fan relay
contact located on the HMU-319 management unit. A temperature monitor activates this fan relay when the
shelf temperature exceeds 45°C (±1°C) and deactivates the relay when the temperature drops below 35°C
(±1°C). If the temperature exceeds 77°C (±1°C) a critical alarm is also generated. The critical alarm resets
when the temperature drops below 40°C (±1°C).
Step
Action
1
Connect the optional fan inputs to the Alarms wire-wrap field pins 25 and 26 (see
).
NC
C NO
CR IT
AUD
CRIT
VIS
MAJ
AUD
MAJ
VIS
MIN
AUD
MIN
VIS
SYS
ID
ACO
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17 18
19 20
21
22
0
6
-1
2
6
1
R
1
ALARMS
23 24
GND
E XT
TEMP
25
26
NO COM
FAN