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56
POWER EXHAUST FAN MOTOR NO. 1 OVERLOAD
PROTECTION — The VFD provides operating overload
protection for the supply fan motor. The factory has pro-
grammed the power exhaust VFD overload function to match
the factory-installed motor (motor size and efficiency). If the
power exhaust fan motor is changed from the original factory
selection, the overload value may need to be changed by the
service person. Contact your local Carrier representative for
assistance in determining the proper overload setting.
NOTE: Variable frequency drive size is matched to factory-
installed motor size. Do not increase motor size without also
changing to equivalent VFD size.
Table 33 — Carrier Power Exhaust VFD Default Program Parameter Values
*These settings differ from the Toshiba defaults and are required for Carrier applications.
NOTE: To restore original factory settings, change tYP to 6 in SEtup mode (SEtP).
This restores the VFD original factory settings.
PARAMETER GROUP
PARAMETER
DEFAULT VALUE
SEtP
(Setup)
ACC1
60.0 Sec
DEC1
60.0 Sec
UL
59.8 Hz
LL
10.0 Hz*
Luln
1
P3
20%
F-P3
0.0 Hz
P4
98%
F-P4
60 Hz
tHr1
See Table 35
StC1
0
StL1
110%
OLN
1
tYP
5*
Gr.F
(Fundamental)
FH
60 Hz
Pt
12
Gr.Fb
(Feedback)
FbP1
1*
Fbin
2
GP
.30
Gl
2 sec
GA
0
GFS
80
P1LL
10
PuL
1
PuUl
10
PuLL
10
Gr.SF
(Frequency Settings)
Fsor
60 Hz
Gr.Pn
(Panel Control)
Fr
0*
Gr.St
(Terminal Selection)
1t
1
1t0
0
1t1
56
1t2
13
1t3
3
1t4
10
Ot1
4*
Ot2
2*
Ot2d
5*
Ot2H
100*
LF
15*
Gr.Pr
(Protection)
UuC
1*
UuCt
2
ArSt
3
Gr.Ut
(Utility)
Cnod
1*
Fnod
2*
bLPn
1*
4-20mA
P24 RES RR
F
ST
FM AM CC
CC
R
SI
RX
S2
S3
PP
S4 RCH P24 LOW LOW
FLA
FLB
FLC
FP
IV
C
A
Fig. 56 — Variable Frequency Drive Terminal Block
Summary of Contents for 48FK034
Page 14: ...14 Fig 20 Unit Control Box Arrangement Sizes 034 048...
Page 15: ...15 Fig 21 Unit Control Box Arrangement Sizes 054 078...
Page 16: ...16 Fig 22 Unit Control Box Arrangement Sizes 088 and 104...
Page 39: ...39 Fig 44 Modulating Power Exhaust Component Locations Sizes 034 048...
Page 40: ...40 Fig 45 Modulating Power Exhaust Component Locations Sizes 054 104 48FK 50FK JK Shown...
Page 59: ...59 Fig 57 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown...
Page 60: ...60 Fig 57 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown cont...
Page 61: ......