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Configure the vfd, Commissioning the unit, Vfd configurations – Carrier 19XRV User Manual

Page 6

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Configure the VFD —

All configurations required by

the VFD are supplied by the ICVC through the VFD Gateway.

Any configuration changes necessary and possible are made on

the ICVC screens. A complete set of configurations is transmit-

ted to the VFD each time the controls are powered up.

The following is from the 19XRV PIC III ICVC screen. Pa-

rameters in italics are to be entered or confirmed at start-up. Pa-

rameters in bold are to be changed only after consulting with

Carrier service engineering. See Table 2.

Table 2

VFD Configurations

* 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 ser-

vice engineering.

Commissioning the Unit —

The commission proce-

dure is as follows:

1. If the chiller has been stored outdoors, allow at least 24

hours room temperature stabilization prior to commis-

sioning. Ensure any condensation that occurs as a result

of the ambient temperature is allowed to evaporate.

2. Enter parameters in the VFD_CONF screen.
3. Install surge suppression devices if required.
4. Review the power wiring and grounding to ensure that it

has been properly connected.

5. Visually examine the inside of the drive enclosure to:

a. Look for signs of corrosion or moisture residue.
b. Remove any dirt or debris.
c. Make sure all vents are clear.

6. Apply power to the drive and take thermal measurements

of the capacitor bank and power connections. Do this

again before start-up.

7. Measure and record the incoming line voltage. Line-to-

line voltages should be balanced within 3% as calculated

by Rockwell’s procedure below:

Measure voltages phase-to-phase and phase-to-ground.

MODEL NUMBER

SERIAL NUMBER

VOLTS/PHASE/HERTZ

LOCKED ROTOR AMPS

OVERLOAD TRIP AMPS

MAX FUSE/CIRCUIT BREAKER SIZE

MIN SUPPLY CIRCUIT AMPACITY

MOTOR NAMEPLATE VOLTAGE

COMPRESSOR 100% SPEED

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

INTERTER PWM FREQUENCY

MACHINE NAMEPLATE SUPPLY DATA

MACHINE ELECTRICAL DATA

SAFETY CODE CERTIFICATION

THE COMPRESSOR MOTOR CONTROLLER AND OVERLOAD PROTECTION MUST BE
IN ACCORDANCE WITH CARRIER SPECIFICATION Z-420.

19XV05008701 REV. 3

A United Technologies Company

Fig. 8 — Machine Nameplate

a19-

1846

Fig. 9 — Drive Module Label

a19-
1924

PARAMETER

DEFAULT VALUE

Motor Nameplate Voltage

460

Compressor 100% Speed
Line Freq=60 Hz? (No=50)

Yes

Rated Line Voltage*

460

Rated Line Amps*

200

Rated Line Kilowatts *

100

Motor Rated Load kW*

100

Motor Rated Load Amps*

200

Motor Nameplate Amps

100

Motor Nameplate RPM 3456
Motor Nameplate KW

100

Inverter PWM Frequency (0 = 4 kHz, 1 =
2 kHz)

1

Skip Frequency 1 (Hz)

102.0

Skip Frequency 2 (Hz)

102.0

Skip Frequency 3 (Hz)

102.0

Skip Frequency Band Line (Hz)

0.0

Voltage % Imbalance

10

Line Volt Imbalance Time (sec)

10

Line Current % Imbalance

40

Line Current Imbal Time (sec)

10

Motor Current % Imbalance

40

Motor Current Imbal Time

10

Increase Ramp Time (sec)

30

Decrease Ramp Time (sec)

30

Single Cycle Dropout (DSABLE/ENABLE)

DSABLE