Pump Vfd - Carrier 30RB060-390 Installation Instructions Manual

The other method for reducing flow on a constant speed
pump is impeller trimming. The impellers in the pumps provid-
ed in the 30RB hydronic kit can be easily removed for this
purpose. Refer to the vendor literature packet supplied with the
hydronic package information on Seal Replacement in the
Service Section, and follow instructions for impeller removal
and trimming. Trimming should only be done by a qualified
machine shop that has experience in this operation. Contact
your local Carrier representative for a recommended machine
shop.
CAUTION
After trimming, the impeller MUST be balanced. Failure to
balance trimmed impellers can result in excessive vibra-
tion, noise, and premature bearing failure.
Impeller trimming has the added benefit of maximum bhp
(brake horsepower) savings, which can recover the cost
incurred by performing the impeller trimming.
PUMP VFD — Pumps may be ordered with a variable fre-
quency drive (VFD) for speed control.
SENSORLESS CONTROL (CLOSED LOOP) — ACTIVE
SETUP 1 — The VFD provided with the pump from the fac-
tory is configured for sensorless control. Default set points are
entered for the unit according to nominal tonnage of the unit.
Table 8 shows the settings from the factory. For details on op-
erating the drive display, see the pump installation and opera-
tion manual, and for more detailed information on the drive,
see IVS 102 Operating Instructions. These manuals are sup-
plied in the control box of the chiller.
Unit Size (tons)
Pump
HP
Impeller Dia (inches)
Param. Desc.
20-21 Setpoint 1 Hd ft wc 30
Flow at
22-89 gpm
Design Point
Press at No 40%
22-87 ft wc 12
Flow Speed Hd
Unit Size (tons)
Pump
HP
Impeller Dia (inches)
Param. Desc.
20-21 Setpoint 1 Hd ft wc
Flow at
22-89 gpm
Design Point
Press at No 40%
22-87 ft wc
Flow Speed Hd
Table 8 — Default Settings for Sensorless Control — Setup 1
60,70
4380 4380
3x3x8 3x3x6
3 5 7.5 10 5
6.5 7.3 8.15 5.4 7.3 8.15 5.4 6.1 7.3 8.15 5.4 6.1 6.5 7.4 4.6 5.2 6.5 7.4 4.6 5.2
45 55 95 40
150
18 22 38 16
60,70
4382 4382
4x4x8 3x3x6
3 5 7.5 7.5 10
6.5 7.3 8.15 5.25 5.9
30 45 55 75 95
150
12 18 22 30 38
The following set points should be verified or modified for
the actual installation.
Parameter 20-21 Setpoint, Hd, Ft-Wc
Parameter 22-89 Design Flow Setpoint, GPM
Parameter 22-87 Pressure at no-flow speed, Hmin, Ft-Wc
(40% of Hd)
When changing set points, assure values are within the
pump curve for the pump provided with the unit.
Minimum speed for the pump is set at 50 Hz, Parameter
4-12. This may be changed as long as the corresponding flow
rate meets the minimum flow requirement for the chiller.
REMOTE SENSOR (CLOSED LOOP) — ACTIVE
SETUP 2 — The drive may be set up to use a remote sensor
instead of sensorless pump control. For a remote sensor con-
trol change Active Setup on the drive from 1 to 2, Parameter
0-10. The drive will read a 0-10vdc or a 0/4-20 mA signal
from the sensor. Switch S2-01 must be set to Off (default set-
ting) for 0-10 vdc or On for 0/4-20 mA. The switch is located
behind the display. The cover must be removed and the display
will snap off to access this switch.
The set point is defined by Parameter 20-21, Setpoint 1.
This is a percentage of the maximum signal from the sensor.
The default is 80%.
REMOTE CONTROLLER (OPEN LOOP) — ACTIVE
SETUP 3 — Drive may be controlled by external sources. For
a remote control of the drive change Active Setup on the drive
to 3, Parameter 0-10. An input signal can used to control the
drive speed. Input signal may be 0-10 vdc or 0/4-20 mA. The
setup is the same as a remote sensor.
A BACnet card is also included with the drive.
BACnet, use Setup 3. The communication settings are in sec-
tion 8 of the drive parameters. See drive manual for details.
SINGLE PUMP
80, 90, 100 110,120,130
4380 4380 4380
3x3x8 3x3x6 3x3x8
7.5 10 15 5 7.5
50 90 120 35 45
200 270
20 36 48 14 18
DUAL PUMP
80, 90, 100 110, 120, 130
4382 4382 4382
4x4x8 4x4x6 4x4x8
5 7.5 10 15 5
7.3 8.15 5.4 6.0 7.3 8.15 5.4
40 50 90 120 35
200
16 20 36 48 14
53
150
4380 4380 4380
3x3x6 4x4x8 4x4x6
10 15 5 7.5 10 15
80 115 25 50 70 95
340
32 46 10 20 28 38
150
4382 4382 4382
4x4x6 4x4x6 6x6x6
7.5 10 15 7.5 10 15
6.0 5.0 4.6 5.2
45 80 115 50 70 95
270 340
18 32 46 20 28 38
For
160, 170, 190
4380 4380
4x4x8 4x4x6
5 7.5 10 15
25 45 65 90
410
10 18 26 36
160, 170, 190
4382
4x4x6
7.5 10 15
5.0 4.6 5.2
45 65 90
410
18 26 36