47
Step 7 — Make Electrical Connections
Field wiring must be installed in accordance with job wiring dia-
grams and all applicable electrical codes. Refer to Fig. 56-57 for
typical wiring and component layout.
These instructions are intended for qualified electrical personnel
familiar with servicing and installing AC drives. Any questions or
problems with the products described in this manual should be di-
rected to your local Carrier Service Office.
Wiring diagrams in this publication are for reference only and are
not intended for use during actual installation; follow job specific
wiring diagrams.
GROUNDING THE CONTROLS/DRIVE ENCLOSURE
Use the following steps to ground the drive.
1. Open the left door of the control center.
2. Run a suitable equipment grounding conductor unbroken
from the drive to earth ground. Tighten these grounding con-
nections to the proper torque. See Fig. 10, 11 and 38.
3. Close the door to the control center.
INSTALLING INPUT POWER WIRING
All wiring should be installed in conformance with the applicable
local, national, and international codes (e.g., NEC/CEC). Signal
wiring, control wiring, and power wiring must be routed in sepa-
rate conduits to prevent interference with the drive operation. Use
grommets, when hubs are not provided, to guard against wire
chafing.
Use the following steps to connect AC input power to the main in-
put circuit breaker:
1. Turn off, lock out, and tag the input power to the drive.
2. Remove the input power wiring panel above the VFD circuit
breaker and drill the number of openings for the AC input
leads (refer to Fig. 10 and 11). Mount all conduit hardware on
the input power wiring panel before re-installing the input
power wiring panel on the VFD enclosure. Take care that
metal chips and hardware do not enter the enclosure.
3. Wire the AC input leads by routing them through the open-
ings in the input power wiring panel.
4. Connect the 3-phase AC input power leads (per job specifica-
tions) to the appropriate input terminals of the circuit breaker.
See Fig. 10 and 11.
5. Tighten the AC input power terminals and lugs to the proper
torque as specified on the input circuit breaker.
DANGER
Only qualified electrical personnel familiar with the construc-
tion and operation of this equipment and the hazards involved
should install, adjust, operate, or service this equipment. Read
and understand this manual and other applicable manuals in
their entirety before proceeding. Failure to observe this pre-
caution could result in severe bodily injury or loss of life.
WARNING
DC bus capacitors in the VFD retain hazardous voltages after
input power has been disconnected. After disconnecting input
power, wait 5 minutes for the DC bus capacitors to discharge
then check both the VFD DPI communications interface board
status LEDs and the VFD with a voltmeter to ensure the DC
bus capacitors are discharged before touching any internal
components. Failure to observe this precaution could result in
severe bodily injury or loss of life.
DANGER
The drive can operate at and maintain zero speed. The user is
responsible for assuring safe conditions for operating person-
nel by providing suitable guards, audible or visual alarms, or
other devices to indicate that the drive is operating or may
operate at or near zero speed. Failure to observe this precau-
tion could result in severe bodily injury or loss of life.
DANGER
Do not install modification kits with power applied to the
drive. Disconnect and lockout incoming power before
attempting such installation or removal. Failure to observe this
precaution could result in severe bodily injury or loss of life.
DANGER
The drive contains ESD (Electrostatic Discharge) sensitive
parts and assemblies. Static control precautions are required
when installing, testing, servicing, or repairing the drive.
Erratic machine operation and damage to, or destruction of,
equipment can result if this procedure is not followed. Failure
to observe this precaution could result in bodily injury.
CAUTION
The user is responsible for conforming with all applicable
local, national and international codes. Failure to observe this
precaution could result in damage to, or destruction of, the
equipment.
CAUTION
Do not attempt to start compressor (even for a rotation check)
or apply test voltage of any kind while machine is under dehy-
dration vacuum. Motor insulation breakdown and serious
damage may result.
CAUTION
Low oil level may result if the oil pump is manually operated
for more than a few minutes when the chiller is not running.
The oil reclaim system does not return oil to the sump when
the compressor is de-energized.
CAUTION
Do not route signal and control wiring with power wiring in
the same conduit. This can cause interference with control and
drive operation. Failure to observe this precaution could result
in damage to, or destruction of, the equipment.
Содержание AquaEdge 23XRV
Страница 53: ...53 Fig 58 23XRV Controls Schematic ...
Страница 54: ...54 Fig 58 23XRV Controls Schematic cont FROM 2000767952 SHEET 3 ...
Страница 55: ...55 Fig 58 23XRV Controls Schematic cont ...
Страница 56: ...56 Fig 59 23XRV Controls Schematic Rockwell Standard Tier VFD Shown ...
Страница 57: ...57 Fig 60 23XRV LF2 VFD Wiring Diagram ...
Страница 65: ...65 Fig 70 23XRV Insulation Area Units with P Compressor ...