User's Manual

Chapter 14 — Installing Power Failure Transfer Units Page 189 of 332
Option 11C Mini Planning and Installation Guide
Figure 58
Power fail transfer
PFTU control lead signals
To connect PFTUs from other manufacturers, use the information provided
in Table 36.
Table 36
PFTU control lead signals
NTAK1104 AUX
cable lead
Lead State when PFTU is
in non-transferred state
Lead State when PFTU
is in transferred state
BRTN GROUND GROUND
BRTN GROUND GROUND
-48V AUX -48V DC (250 mA max.) -48V DC (250 mA max.)
PFTS OPEN GROUND
J1
QUA6A
PFTU
XFER
5
2
V
5
2
V
P
F
T
U
A
U
X
PFT1
TR 2 3 4
W-
BL
BL-
W
O-
W
W-
O
G-
W
W-
G
T
1
R
1
T
2
R
2
T
3
R
3
NTAK1104
553-8343.EPS