Velocity Edge GX440 Provozní pokyny Strana 177

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Commissioning
5.7 Commissioning an encoder with gear factor
Drive converter cabinet units
Operating Instructions, 10/2008, A5E00288214A
177
5.7 Commissioning an encoder with gear factor
Description
When encoders are commissioned (p0010 = 4), a gearbox must be parameterized by means
of parameters p0432 (counter), p0433 (denominator), and p0410 (sign).
To ensure that the commutation position can be accurately determined from the encoder
angle, the following applies:
For resolvers:



Q
]
]
BS
BS
ุ ,QWHJHU
5HVROYHU
0RWRU
, zp = no. of poles
For all other absolute encoders:
,QWHJHU
0RWRU

Q
]
BS
ุ
, zp = no. of poles
Where n is the gear factor
0RWRUVSHHG
(QFRGHUVSHHG
S
S
Q 
The encoder commissioning program ensures that this uniqueness condition is observed
and, if necessary, prevents the system from exiting the commissioning program or outputs
an error message.
Sign bit p0410 inverts the calculated encoder angle and the speed, thereby yielding a
negative gear factor.
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