Commissioning The Unit; Check Configuration Jumpers - Carrier 19XRV Series Start-Up And Service Instructions

Table 4 — VFD Configurations (PIC3/VFD_CONF)
PARAMETER
MOTOR NAMEPLATE VOLTAGE
COMPRESSOR 100% SPEED
LINE FREQ=60 HZ? (NO=50)
RATED LINE VOLTAGE*
RATED LINE AMPS*
RATED LINE KILOWATTS*
MOTOR RATED LOAD KW
MOTOR RATED LOAD AMPS
MOTOR NAMEPLATE AMPS
MOTOR NAMEPLATE RPM
MOTOR NAMEPLATE KW
INVERTER PWM FREQUENCY (0 = 4 KHZ,
1 = 2 KHZ)
SKIP FREQUENCY 1 (HZ)
SKIP FREQUENCY 2 (HZ)
SKIP FREQUENCY 3 (HZ)
SKIP FREQUENCY BAND LINE (HZ)
VOLTAGE % IMBALANCE
LINE VOLT IMBALANCE TIME (SEC)
LINE CURRENT % IMBALANCE
LINE CURRENT IMBAL TIME (SEC)
MOTOR CURRENT % IMBALANCE
MOTOR CURRENT IMBAL TIME
INCREASE RAMP TIME (SEC)
DECREASE RAMP TIME (SEC)
SINGLE CYCLE DROPOUT (DSABLE/ENABLE)
* Parameters marked with an * are not downloadable to the VFD but are used in
other calculations and algorithms in the ICVC.
NOTES:
1. Parameters in italics are to be entered or confirmed at start-up.
2. Parameters in bold are to be changed only after consultation with service
engineering.
Table 5 is from PIC6 Unit Mount VFD Configuration menu
(UM VFD Configuration).
Table 5 — VFD Configuration (PIC6/UM VFD
Configuration) CFGUMVFD - UM VFD Configuration
PARAMETER
COMPRESSOR 100% SPEED
RATED LINE VOLTAGE*
MOTOR NAMEPLATE CURRENT
MOTOR RATED LOAD CURRENT
MOTOR NAMEPLATE VOLTAGE
MOTOR NAMEPLATE RPM
MOTOR NAMEPLATE KW
SKIP FREQUENCY 1
SKIP FREQUENCY 2
SKIP FREQUENCY 3
SKIP FREQUENCY BAND
INCREASE RAMP TIME
DECREASE RAMP TIME
LINE VOLTAGE IMBALANCE%
LINE VOLT IMBALANCE TIME
LINE CURRENT IMBALANCE%
LINE CURRENT IMBAL TIME
MOTOR CURRENT IMBALANCE%
MOTOR CURRENT IMBAL TIME
SINGLE CYCLE DROPUT
PWM SWITCH FREQUENCY (0=2 KHZ, 1=4 KHZ)
* Parameters marked with an * are not downloadable to the VFD but are used in
other calculations and algorithms in the ICVC.
NOTES:
1. Parameters in italics are to be entered or confirmed at start-up.
2. Parameters in bold are to be changed only after consultation with service
engineering.

Commissioning the Unit

The commission procedure is as follows:
DEFAULT
VALUE
1. If the chiller has been stored outdoors, allow at least 24 hours
460
room temperature stabilization prior to commissioning. En-
sure any condensation that occurs as a result of the ambient
YES
temperature is allowed to evaporate.
460
2. Enter parameters in the VFD_CONF (PIC III) / UM VFD
200
Configuration (PIC 6) screen.
100
3. Install surge suppression devices if required.
100
200
4. Review the power wiring and grounding to ensure that it has
100
been properly connected.
3456
5. Visually examine the inside of the drive enclosure to:
100
a. Look for signs of corrosion or moisture residue.
1
b. Remove any dirt or debris.
20.0
c. Make sure all vents are clear.
20.0
6. Apply power to the drive and take thermal measurements of
20.0
the power connections. Do this again before start-up.
0.0
10
7. Measure and record the incoming line voltages Vab,Vbc,
10
Vca.
40
10
40
10
Pick the line voltage of the greatest difference from the aver-
30
age voltage. Subtract the smaller from the larger to get Vdiff.
30
DSABLE
Voltage imbalance must be 2% or less.
8. Take a final thermal measurement of the termination after fi-
nalizing the installation to ensure all connections are good.
9. If a ground fault occurs, then do the following:
a. Turn off and lock out input power. Wait five minutes.
b. Check for a ground in the motor or motor wiring.
c. Check for damage to wiring insulation and that wiring
DEFAULT is dry.
VALUE
d. Verify the motor wiring is separated from ground and
60
there is no connection between phases.
460
e. Check for failed IGBTs.
200
200
10. If an Overcurrent fault occurs, then do the following:
460
a. Turn off and lock out input power. Wait five minutes.
3000
b. Check for excessive load and verify load limit settings
1500
on the ICVC (PIC III) or CFGUMVFD (PIC 6)
30
screen.
30
30 c. Check motor and wiring insulation.
0
d. Check parameter settings on VFD_CONF (PIC III) /
30
CFGUMVFD (PIC 6) screen.
30
10

Check Configuration Jumpers

10
Check that configuration jumpers are as shown in Fig. 5.
40
10
40
10
DISABLE
0
6
(Vab + Vbc + Vca)
Vavg =
(Vdiff x 100)
= % voltage imbalance
Vavg
3