Overview
VFDB-SVX001A-EN
7
CE for MV Drives
Important:
•
All Trane-supplied remote drives used in conjunction
with CVHH or CDHH Trane chillers will be CE-
compliant per EU directives and IEC standards to
which the CVHH and CDHH chillers also comply. All
Trane-supplied remote starters and drives must be
used with CVHH or CDHH Trane chillers to ensure CE
compliance
•
For remote drives, basic details are provided on drive
nameplate. Please refer to the chiller unit nameplate
located on the chiller-mounted control panel for details
on wire sizing (minimum current ampacity) and
overcurrent protection sizing upstream of unit
(maximum overcurrent protection).
•
Always refer to as-built schematic wiring diagram and
the chiller
Installation, Operation, and Maintenance
manual located inside the chiller-mounted control
panel (regardless of unit or remote-mounted starter or
drive) for details on wiring, safety, installation, and
warnings.
•
Customers are responsible for all field wiring with
respect to EMC and EMI interference. Customers are
responsible for mitigating the risks associated with
EMC and EMI interference that can occur as a result of
customer-provided field wiring as dictated by
international, national, and local codes. This also
implies that for remote-mounted drives, customers are
responsible for the entire field wiring into the drive as
well as between the drive and the chiller/compressor
terminals with respect to EMC and EMI interference. It
also implies that customers are responsible for
incoming power wiring to the drive with respect to
EMC and EMI interference.
All customer wiring, including power wiring to drives,
must be separated: 24–27 Vdc, 110–120 Vac, 460 V, and
2300–6600 Vac each must be in separate conduit runs.
For remote drives interfacing with Trane CVHH and CDHH
chillers, all wiring must be run in conduit. Any Ethernet
cables being used by the customer to interface with the
Trane chiller must be shielded Ethernet cabling.
The customer is required to provide an overcurrent
protective device upstream of all drives in accordance with
IEC standards and/or any applicable national and local and
codes.
Service personnel must use proper PPE for servicing and
must also use proper lockout/tagout procedures during
servicing: lock the drive disconnect handle before
servicing to prevent accidental pulling of disconnect
handle at the drive panel.
In addition, service personnel should disconnect the main
supply disconnecting device upstream of the drive
before
performing any service on any part of the chiller.
Checks
Motor Checks
1. Check the motor for proper horsepower and voltage
ratings. Verify that the chiller rated load amps do not
exceed the nameplate rating of the controller.
2. Check that the motor terminals are correctly connected
to the controller’s power terminals for the proper
voltage and motor rotation.
3. Use an ohmmeter to check for any short circuits
between the motor frame and the motor power leads.
If a short circuit exists, it must be corrected before
proceeding.
Controller Checks
1. Check that local, state and national electric codes have
been observed for the installation and wiring of this
equipment.
2. Check that all external power wiring has been properly
routed through the cabinet.
3. Check all input power and output power connections
for tightness.
4. Check the chassis ground and other connections for
tightness.
5. Check all external control connections (this includes
the operator station connections) for tightness.
WARNING
Lockout/Tagout Before Removing Touch-
Safe Covers!
Failure to follow instructions regarding touch-safe
covers could result in death or serious injury.
Touch-safe covers inside panels are there for protection
and may be removed if necessary for service only and
only after disconnection of main power supply. Before
removing any touch-safe cover, ensure that there is no
line power first. Removal of touch-safe covers is at the
customer/service personnel’s own risk. After any
service is completed, if the touch-safe covers have
been removed, they need to be put back in to ensure
safety and protection.
NOTICE
Do Not Megohm Test!
Using a megohm test to perform continuity checks in
the drive equipment could result in damage to the
controller circuitry.
NOTICE
Disconnect Motor Leads!
Failure to disconnect all motor leads at the AFD prior to
megging the motor could result in equipment damage.
