Sinamics Perfect Harmony Gh180 6Sr41 Manufactured In Nma Nuernberg, Germany - Siemens GH180 Operating Instructions Manual

NEMA 1 and NEMA 12
NEMA 1 is an enclosure rating in which no openings allow penetration of a 0.25-inch diameter
rod. NEMA 1 enclosures are intended for indoor use only. NEMA 12 is a more stringent NEMA
rating in which the cabinet is said to be "dust tight" (although it is still not advisable to use
NEMA 12 in conductive dust atmospheres). The approximate equivalent IEC rating is IP52.
Normally closed (NC)
Normally closed refers to the contact of a relay that is closed when the coil is de-energized.
Normally open (NO)
Normally open refers to the contact of a relay that is open when the coil is de-energized.
OLTM
An acronym for Open Loop Test Mode, one of the control modes of the drive.
OLVC
An acronym for Open Loop Vector Control, also known as Encoderless Vector Control. OLVC
is a flux vector control that is one of the control modes of the drive. The drive computes the
rotational speed of the rotor and uses it for speed feedback.
OOS
OOS is an abbreviation for out of saturation - a type of fault condition in which a voltage drop
is detected across one of the IGBTs during conduction. This can indicate that the motor is
drawing current too rapidly or in excess.
OR
OR is a logical Boolean function whose output is true if any of the inputs is true. In SOP notation,
OR is represented as "+".
Parameter
A parameter is one of four items found in the menu system. Parameters are system attributes
that have corresponding values that can be monitored or, in some cases, changed by the user.
PED
PED is an acronym for pressure equipment directive, a directive of the EU relating to pressure
vessels.

SINAMICS PERFECT HARMONY GH180 6SR41 manufactured in NMA Nuernberg, Germany

Operating Instructions Rev.201706301306
Glossary
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