Safety instructions and General Warning
Disposal
Drive:
Equipment containing electrical com-
ponents may not be disposed together
with domestic waste.
It must be separate collected with Electrical and
Electronic Waste according to local and currently
valid legislation.
Compressors:
Danfoss recommends not to thriw away a used
compressor but to a dispose of the compressor
and its oil at a specialised recycling company site
Caution
The CD 302 Compressor Drive™ DC link capa-
citors remain charged after power has been dis-
connected. To avoid an electrical shock hazard,
disconnect the CD 302 from the mains before
carrying out maintenance. Wait at least as follows
before doing service on the frequency converter:
CD 302: ≤ 7.5 kW 4 minutes
CD 302: 11 . 22 kW 15 minutes
Be aware that there may be high voltage on the
DC link even when the LEDs are turned off.
CD302 Operating Instructions Software version:
1.0x
These Operating Instructions can be used for all
CD302 Compressor Drives™ with software version
1.0x.
The software version number can be seen from
parameter 15-43.
High Voltage Warning
The voltage of the CD 302 is dangerous
whenever the converter is connected to mains.
Incorrect fitting of the motor or frequency
converter may cause damage to the equipment,
serious injury or death. Consequently, it is essen-
tial to comply with the instructions in this manual
as well as local and national rules and safety regu-
lations.
Safety Instructions
• Make sure the CD 302 is properly connected to
earth.
• Do not remove mains plugs or motor plugs
while the CD 302 is connected to mains.
• Protect users against supply voltage.
• Protect the motor against overloading accor-
ding to national and local regulations.
• Motor overload protection is included in the
default settings
• The earth leakage current exceeds 3.5 mA.
• The [OFF] key is not a safety switchIt does not
disconnect the CD 302 from mains.
General warning
Warning:
Touching the electrical parts may be fatal - even
after the equipment has been disconnected from
mains.
Also make sure that other voltage inputs have
been disconnected, such as load-sharing (linkage
of DC intermediate circuit).Using CD 302 Com-
pressor Drives™: wait at least 15 minutes.
Shorter time is allowed only if indicated on the
nameplate for the specific unit.
Leakage Current
The earth leakage current from the CD 302
exceeds 3.5 mA. To ensure that the earth cable
has a good mechanical connection to the earth
connection (terminal 95), the cable cross section
must be at least 10 mm
2
or 2 times rated earth
wires terminated separately.
Residual Current Device
This product can cause a D.C. current in the
protective conductor. Where a residual current
device (RCD) is used for extra protection, only an
RCD of Type B (time delayed) shall be used on the
supply side of this product. See also RCD Applica-
tion Note MN.90.GX.02.Protective earthing of the
CD 302 and the use of RCD.s must always follow
national and local regulations.
IT Mains
Do not connect 400 V frequency converters
with RFI-filters to mains supplies with a Voltage
between phase and earth of more than 440 V. For
IT mains and delta earth (grounded leg), mains
voltage may exceed 440 V between phase and
earth.
Par. 14-50 RFI 1 can on CD 302 be used to dis-
connect the internal RFI capacitors from the RFI
filter to ground. If this is done it will reduce the RFI
performance to A2 level.
Before Commencing Repair Work
1. Disconnect CD 302 from mains
2. Disconnect DC bus terminals 88 and 89
3. Wait for discharge of the DC-link. See period of
time on the warning label.
4. Remove motor cable
Avoid Unintended Start
While CD 302 is connected to mains, the motor
can be started/stopped using digital commands,
bus commands, references or via the Local
Control Panel (LCP).
• Disconnect the CD 302 from mains whenever
personal safety considerations make it necessary
to avoid unintended start.
• To avoid unintended start, always activate the
[OFF] key before changing parameters.
• An electronic fault, temporary overload, a fault
in the mains supply, or lost motor connection
Instructions
Frequency converter CD302
Inverter reciprocating compressors VTZ
© Danfoss | DCS (CC)| 2019.04
AN000086420674en-000201 | 1
