Kollmorgen MMC Smart Drive Series, Hardware Manual

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Kollmorgen - June 2014 43
MMC Smart Drive Hardware Manual
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SYSTEM POWER DEVICES
4.2.5 230V Smart Drive (SD) Protection Requirements
Although these drives provide solid state motor overload protection at 125% of the
rated FLA Current and short circuit protection, this Integral solid state short circuit
protection does not provide branch circuit protection. Branch circuit protection must be
provided in accordance with the National Electrical Code and any additional local
codes.
Two types of Protection must be provided in case the Smart Drive malfunctions:
• Short Circuit Protection - this protection helps minimize damage to the Smart
Drive in the case of a Short Circuit condition. Short Circuit Protection is required to
meet UL508C requirements.
• Branch Circuit Over Current Protection - this protection helps minimize damage to
the Smart Drive and helps protect the wiring between the Smart Drive and the
Over Current Protection Device in the case of a sustained Over Current condition.
Over Current Protection must be provided in accordance with NFPA 79 7.2.3 and
7.2.10. Supplemental UL1007 protectors
shall not be used to provide Branch Cir-
cuit Protection.
S20250-DLS
10A
(LPJ-10SP)
5A
(LPJ-5SP)
N/A
S20350-DLS
20A
(LPJ-20SP)
10A
(LPJ-10SP)
N/A
V
IN
= 90VDC
S20330-DLS
7A
(LP-CC-7)
S20630-DLS
15A
(LP-CC-15)
a. This is the maximum fuse size that can be used for Device Protection
ATTENTION
The opening of branch-circuit protective device may be an indication that a
fault has been interrupted. To reduce the risk of fire or electric shock, current-
carrying parts and other components of the controller should be examined
and replaced if damaged.
NOTE
Short Circuit Rating - 100kA, 240 Vac when used with Class RK1, J, or CC
fuses.