Chapter 2: Installation
December 20, 2004
2-12
LTPH-UM-1261-01
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
Figure 2-3
).
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
Содержание HiGain HMS-318 List 3
Страница 4: ...Table of Contents December 20 2004 iv LTPH UM 1261 01...
Страница 6: ...List of Figures December 20 2004 vi LTPH UM 1261 01...
Страница 8: ...List of Tables December 20 2004 viii LTPH UM 1261 01...
Страница 28: ...Chapter 1 Product Description December 20 2004 1 16 LTPH UM 1261 01...
Страница 50: ...Appendix B Standard PIC Color Code December 20 2004 B 2 LTPH UM 1261 01...
Страница 56: ...Appendix E Product Support December 20 2004 E 2 LTPH UM 1261 01...
