Product Familiarization 2-1MN799UG
Chapter 2
Product Familiarization
2.1 Overview
The ACS880+N5350 is designed to provide variable speed control for a cooling tower fan. This is accomplished much like
traditional variable frequency drives, but with unique capabilities specic to the type motor used and the type of application
for which the control is being employed.
The +N5350 control is designed specically for Baldor Interior Permanent Magnet Cooling Tower Motor Control. Control
is intended for operating cooling tower fans through a 10:1 variable speed range as well as providing torque control to
minimize mechanical stress on the system. The motor drive systems are designed for direct drive applications and eliminate
the need for right angle gearboxes. The ACS880 is available for Cooling Tower applications in frame sizes R1 through R9.
Frame size specic information can be found in the ratings section.
2.2 Standards
ACS880+N5350 drives have been designed and tested to comply with the following standards.
2.2.1 Applicable Standards
The compliance with the European Low Voltage Directive is veried according to standard EN61800-5-1.
Table 2-1
EN 60204-1:2006 + A1 2009
Safety of machinery. Electrical equipment of machines.
Part 1: General requirements. Provisions for compliance: The nal
assembler of the machine is responsible for installing
- emergency-stop device
- supply disconnecting device.
IEC/EN 60529:1991 + A1 2000 Degrees of protection provided by enclosures (IP code)
IEC 60664-1:2007
Insulation coordination for equipment within low-voltage systems.
Part 1: Principles, requirements and tests.
EN 61800-3:2004
Adjustable speed electrical power drive systems.
Part 3: EMC requirements and specic test methods
EN 61800-5-1:2007
Adjustable speed electrical power drive systems.
Part 5-1: Safety requirements – electrical, thermal and energy
EN 61800-5-2:2007
Adjustable speed electrical power drive systems.
Part 5-2: Safety requirements – Functional
UL 508C:2002 UL Standard for Safety, Power Conversion Equipment, third edition
NEMA 250:2008 Enclosures for Electrical Equipment (1000 Volts Maximum)
CSA C22.2 No. 14-10 Industrial control equipment
GOST R 51321-1:2007
Low-voltage switchgear and control gear assemblies.
Part 1 - Requirements for type-tested and partially type-tested assemblies
- General technical requirements and methods of tests
2.2.2 CE Marking
A CE mark is attached to the drive to verify that the drive follows the provisions of the European Low Voltage, EMC and
RoHS Directives. The CE marking also veries that the drive, in regard to its safety functions (such as Safe torque off),
conforms with the Machinery Directive as a safety component.
2.2.3 UL Marking
cULus Listed UL Type 1 (IP21) drives:
• frames R1 to R3 of voltage range 208…240V
• frames R1 to R9 of voltage ranges 380…415V and 380…500V
• frames R5 to R9 of voltage range 525…600V
cULus Listed UL Type 12 (IP55) drives:
• frames R1 to R3 of voltage range 208…240V
• frames R1 to R5 of voltage ranges 380…415V and 380…500V
• frames R5 of voltage range 525…600V
The listing is pending for the other types. The approval is valid with rated voltages.
(See also Appendix C for recommendations for CE compliance and UL marking.)