Carrier PC 111 Operating And Troubleshooting Manual page 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
PARAMETER GROUP
SEtP
(Setup)
Gr.F
(Fundamental)
Gr.Fb
(Feedback)
Gr.SF
(Frequency Settings)
Gr.Pn
(Panel Control)
Gr.St
(Terminal Selection)
Gr.Pr
(Protection)
Gr.Ut
(Utility)
*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.
P24 RES RR
ST FM AM CC
Fig. 56 — Variable Frequency Drive Terminal Block
PARAMETER
ACC1
DEC1
UL
LL
Luln
P3
F-P3
P4
F-P4
tHr1
StC1
StL1
OLN
tYP
FH
Pt
FbP1
Fbin
GP
Gl
GA
GFS
P1LL
PuL
PuUl
PuLL
Fsor
Fr
1t
1t0
1t1
1t2
1t3
1t4
Ot1
Ot2
Ot2d
Ot2H
LF
UuC
UuCt
ArSt
Cnod
Fnod
bLPn
56
S4 RCH P24 LOW LOW
F R SI S2 S3
CC RX PP IV FP FLC
4-20mA
DEFAULT VALUE
60.0 Sec
60.0 Sec
59.8 Hz
10.0 Hz*
1
20%
0.0 Hz
98%
60 Hz
See Table 35
0
110%
1
5*
60 Hz
12
1*
2
.30
2 sec
0
80
10
1
10
10
60 Hz
0*
1
0
56
13
3
10
4*
2*
5*
100*
15*
1*
2
3
1*
2*
1*
C
A
FLB FLA