Rockwell Automation 20Y PowerFlex 700H, 700S, and 700AFE Drive Fan Systems, Frames 9...14 - Manual (Page 271)

Rockwell Automation Publication PFLEX-IN029B-EN-P - August 2014 271
PowerFlex 700H and 700S Diagnostic Procedures Appendix A
Figure 39 - AC Fan System Block Diagram
A
C F
an I
n
ver
ter Cir
cuit Boar
d
ASIC
Cir
cuit
Boar
d
(X11)
X8 of
Nex
t
Fa
n
X8
X3
X2
1 - DC+ 3 - DC-
1 - F
an PWM
2 - Iso +18V 3 - F
an C
ontr
ol
4 - F
an Alarm F
r9
5 - DC- Ref 6 - F
an Alarm F
r8
7 - F
an Alarm F
r10
OPT
O
OPT
O
OPT
O
1 - Nex
t F
an PWM
2 - Iso +18V* 3 - Nex
t F
an C
o
ntr
o
l
4 - Nex
t F
an Alarm*
* X3 is also used as the loopback pin set.
When used as a loopback
, a jumper c
onnec
ts P
ins 2 and 4.
For P
o
w
erF
lex 700H/700S driv
es
, the jumper oc
curs on:
F
r. 9 - F
irst boar
d
F
r. 10/12 - S
ec
ond boar
d
F
r. 11/13/14 -
Thir
d boar
d
For the P
o
w
erF
lex 700AFE, the jumper oc
curs on:
F
r. 10 - F
irst boar
d
F
r. 13 -
Thir
d boar
d
SMPS
+18V -DC
+5V -18V
µP
Temp
Bov
Ioc
I
2
t
Fault Det
ec
t
NT
C
DC
FDBK
I SENSE
Ga
te
Driv
er
Boar
d
UH VH UL VL
DC+ DC-
Output
Tr
ansf
ormer
AC
F
an
Blue
Black
Bro wn
X4 Blue X5
Black
7
µF
Σ
Gr
een
DC+
DC-
Blue
Bro wn 2.2 µ F 2.2 µ F
10 MΩ 10 MΩ