Safety - Danfoss VLT MCA 121 EtherNet/IP Manual

MCA 121 EtherNet/IP

1 Safety

1.1.1 Copyright, Limitation of Liability and Revision Rights
This publication contains information proprietary to Danfoss. By accepting and using this manual the user agrees that the information contained herein
will be used solely for operating equipment from Danfoss or equipment from other vendors provided that such equipment is intended for communication
with Danfoss equipment over an Ethernet serial communication link. This publication is protected under the Copyright laws of Denmark and most other
countries.
Danfoss does not guarantee that a software program produced according to the guidelines provided in this manual will function properly in every physical,
hardware or software environment.
Although Danfoss has tested and reviewed the documentation within this manual, Danfoss makes no warranty or representation, either express or implied,
with respect to this documentation, including its quality, performance, or fitness for a particular purpose.
In no event shall Danfoss be liable for direct, indirect, special, incidental, or consequential damages arising out of the use, or the inability to use information
contained in this manual, even if advised of the possibility of such damages. In particular, Danfoss is not responsible for any costs including but not limited
to those incurred as a result of lost profits or revenue, loss or damage of equipment, loss of computer programs, loss of data, the costs to substitute
these, or any claims by third parties.
Danfoss reserves the right to revise this publication at any time and to make changes in its contents without prior notice or any obligation to notify
previous users of such revisions or changes.
1.1.2 Safety Note
The voltage of the frequency converter is dangerous whenever connected to mains. Incorrect installation of the motor, frequency
converter or fieldbus may cause damage to the equipment, serious personal injury or death. Consequently, the instructions in this
manual, as well as national and local rules and safety regulations, must be complied with.
1.1.3 Safety Regulations
1. The frequency converter must be disconnected from mains if repair work is to be carried out. Check that the mains supply has been disconnected
and that the necessary time has passed before removing motor and mains plugs.
2. The [OFF] key on the LCP of the frequency converter does not disconnect the equipment from mains and is thus not to be used as a safety
switch.
3. Correct protective earthing or grounding of the equipment must be established, the user must be protected against supply voltage, and the
motor must be protected against overload in accordance with applicable national and local regulations.
4. The earth leakage currents are higher than 3.5 mA.
5. Protection against motor overload is not included in the factory setting. If this function is desired, set par. to data value ETR trip or data value
ETR warning.
NB!
The function is initialised at 1.16 x rated motor current and rated motor frequency. For the North American market; the ETR functions
provide class 20 motor overload protection in accordance with NEC.
6. Do not remove the plugs for the motor and mains supply while the frequency converter is connected to mains. Check that the mains supply has
been disconnected and that the necessary time has passed before removing motor and mains plugs.
7. Please note that the frequency converter has more voltage inputs than L1, L2 and L3, when load sharing (linking of DC intermediate circuit) and
external 24 V DC have been installed. Check that all voltage inputs have been disconnected and that the necessary time has passed before
commencing repair work.
®
MG.90.J2.02 - VLT is a registered Danfoss trademark
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