73
IDENTIFYING THE DRIVE BY PART NUMBER —
Each AC drive can be identified by its assembly number. See
Fig. 47. This number appears on the shipping label and on the
drive’s nameplate. LiquiFlo 2.0 AC drives comprise an input
components section and a power module section.
Each LiquiFlo™ 2.0 AC power module can be identified by
its model number. See Fig. 47. This number appears on the
shipping label and on the power module’s nameplate. Power
ratings for LF-2 VFDs are provided in Table 12. Power ratings
for Std Tier VFDs are provided in Table 13.
Check Control Center
Input Power Wiring —
All wiring should be installed in
conformance with applicable local, national, and international
codes. Use grommets, when hubs are not provided, to guard
against wire chafing.
Use the following steps to connect AC input power to the
main input circuit breaker and ground leads to the ground lug.
1. Turn off, lockout, and tag the input power to the drive.
2. Remove the input power wiring panel from the top of the
control center and drill the required number of openings
in the input power wiring panel. Take care that metal
chips do not enter the VFD enclosure.
3. Wire the AC input power leads and ground leads by
routing them through the opening in the top of the control
center to the main input circuit breaker.
4. Connect the three-phase AC input power leads (per job
specification) to the appropriate input terminals of the cir-
cuit breaker.
5. Tighten the AC input power terminals and lugs to the
proper torque as specified on the input circuit breaker.
6. Connect and tighten the ground leads to the ground lug.
Checking the Installation — Use the following in-
structions to verify the condition of the installation:
1. Turn off, lockout, and tag the input power to the drive.
Wait a minimum of 5 minutes for the DC bus to
discharge.
2. Verify that there is no voltage at the input terminals (L1,
L2 and L3) of the power module or main circuit breaker.
3. Verify that the status LEDs on the DPI communications
interface board are not lit. The location of the DPI
communications interface board is shown in Fig. 20.
4. Remove any debris, such as metal shavings, from the
enclosure.
5. Check that there is adequate clearance around the
machine.
6. Verify that the wiring to the terminal strip and the AC
input power terminals is correct. Verify that all of the
VFD power module circuit board connectors are fully
engaged and secured in place.
Table 12 — Drive Assembly and Power Module Ratings (LF-2 VFD)
*110% output current capability for one minute, 150% output current for 5 seconds.
Table 13 — Drive Assembly and Power Module Ratings (Std Tier VFD)*
*All voltage and current combinations listed may not be available for sale. Please review Carrier Marketing literature for latest offering.
†110% output current capability for one minute, 150% output current for 5 seconds.
** Last character 0 indicates refrigerant-cooled; last digit A indicates air-cooled.
CAUTION
BE AWARE that certain automatic start arrangements can
engage the VFD. Open the disconnect ahead of the control
center in addition to shutting off the chiller or pump to
avoid equipment damage and possible personal injury.
CAUTION
The main disconnect on the control center may not deener-
gize all internal circuits. Open all internal and remote dis-
connects before servicing the starter to avoid equipment
damage and possible personal injury.
CAUTION
Do not route control wiring carrying 30 v or less within a
conduit carrying 50 v or higher. Failure to observe this pre-
caution could result in electromagnetic interference in the
control wiring.
CARRIER PART NUMBER FRAME SIZE
ENCLOSURE
TYPE
INPUT
VOLTAGE (V)
RANGE
MAX INPUT
CURRENT
(AMPS)
MAX OUTPUT
CURRENT* AT 4kHz
(AMPS)
23XRA2AA_ _ _ _ _ _ _ _ _ _ _ Frame 2AA NEMA 1 380 to 460 440 442
23XRA2BA_ _ _ _ _ _ _ _ _ _ _ Frame 2BA NEMA 1 380 to 460 520 442
23XRA2BB_ _ _ _ _ _ _ _ _ _ _ Frame 2BB NEMA 1 380 to 460 520 520
23XRA2CC_ _ _ _ _ _ _ _ _ _ _ Frame 2CC NEMA 1 380 to 460 608 608
CARRIER PART NUMBER
ENCLOSURE
TYPE
INPUT VOLTAGE
(DIGIT Y OF PART
NUMBER)
MAX INPUT
CURRENT
(AMPS)
MAX OUTPUT
CURRENT† AT 2kHz
(AMPS)
Y VOLTAGE/Hz
23XVR0_ _ _00Y _ _ F0**
(R = ROCKWELL)
NEMA 1
3
4
5
7
9
380v / 50 Hz
416v / 60 Hz
416v / 60 Hz
575v / 60 Hz
400v / 50 Hz
230
335
445
230
335
445
23XVE0_ _ _00Y _ _ F0**
(E = EATON)
485
550
605
485
550
605