Nortel SONET AccessNode 800A Series Manual page 396

13-38 Cabinet and equipment wiring and cabling
Fan and Temperature alarm circuit
Fan and high temperature alarm wiring in the S800A cabinet is connected from
the fan assemblies (see Figure 13-18 on page 13-28) to the BBP and then
to the SIL.
The low temperature alarm sensor is wired to the BIP wire-wrap block
pins 7 and 8.
Figure 13-26 shows the fan and temperature alarm wiring diagram to the ABM
shelf SIL (J05) from the BBP.
Figure 13-26
SIL J05 FAN and TEMP alarm circuit wiring diagram
BBP
Fan
1
2
3
4
5
6
ALM In 2 9
ALM In 1 7
AccessNode 323-3001-210 Issue 1.0
NT1W82F A
From fan alarm
outputs
SL - from fan shelf 1 (Part of NT1W87AB)
SL - from fan shelf 2 (Part of NT1W87AB)
BL - from roof fans (Part of cable NT7A6980)
Thermostat
close above
+ 60˚C
Thermostat
close bellow
+ 60˚C
FW-15250
FW-15250
SIL
NT4K50AA
J05
1 YFANSTA1
2 YFANSTA2
3
YFANSTA3
4 YFANSTA4
5 YFANSTA5
6 YFANSTA6
25 LGND
23 LGND
YHITMPA
9
24 LGND
10 YHITMPB