Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting page 78

Table 37 — VFD Connections
POINT TYPE OF I/O TERMINAL
DESCRIPTION
Low Voltage Inputs
Low Voltage Power
(jumped to 18 and 27)
Discrete Inputs Common
Analog Inputs Common
Terminal 18 Discrete
Switch Input
Input (jumped from 24v)
Not Used Switch Input
Terminal 27 Discrete
Switch Input
Input (jumped from 24v)
Not Used Switch Input
LEN communication +
LEN communication –
LEN Communication
Common
High Voltage
Voltage Leg from C-11 Voltage Input
Voltage Leg from C-13 Voltage Input
Voltage Leg from IFTB Voltage Input
Voltage Leg to IFM-3
Voltage Leg to IFM-2
Voltage Leg to IFM-1
Table 38 — 48/50LC 07-26 VFD Parameters Configured by Factory or by VFD Keypad
PARAMETER GROUP
Reset Functions Service Code
PROTOCOL
ADDRESS
FC Port Settings
BAUD RATE
Parity/Stop Bits
TERMINAL
NUMBER NAME
24vdc 12 +24v
Ground 20 GND
Ground 55 GND
18 DIG IN
19 DIG IN
27 DIG IN
29 DIG IN
LEN+ 68
LEN– 69
COMM.
LEN C 61
GND
L1 MAINS
L2 MAINS
L3 MAINS
Voltage
U MOTOR
Output
Voltage
V MOTOR
Output
Voltage
W MOTOR
Output
PARAMETER TITLE DANFOSS PARAMETER
The VFD communicates to the MBB over the local equipment
network (LEN). The VFD speed is controlled directly by the
controller over the LEN. The VFD parameters required for the
VFD to communicate on the LEN are shown in Table 38.
Table 39 shows VFD parameters that are hard-coded by the
SystemVu™ controller. The parameters listed in Table 40 have
corresponding SystemVu controller configurations (SET-

TINGS UNIT CONFIGURATIONS
IFD VFD PARAMETERS). The factory sets these parameters
per the motor installed in the unit and these should not be ad-
justed in the field. These are only provided for drive or motor
replacement. These parameters in Table 40 require the drive to
be off or at 0% to change them. See Table 41 for VFD parame-
ters available through the SystemVu controller.
P
N
EQUIPMENT DAMAGE HAZARD
Failure to follow this warning could result in equipment
damage.
The VFD motor parameters shown in Table 42 should nev-
er be changed in the field unless authorized by Carrier Cor-
poration. Damage could occur to the motor or unit if these
are set to anything besides what is shown in the table.
These are only provided for drive or motor replacement or
future adjustments.
14-29
8-30
8-31
8-32
8-33
78

CAUTION
VFD DEFAULT
6333
(0) FC
1
(2) 9.6 kb/s
(0) 8 EVEN 1

INDOOR FAN
CARRIER
6222
(20) LEN
180
(4) 38.4 kb/s
(2) 8 NONE 1