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Motion Control SW
7.2.5 X4.12 SVE (Safety Voltage Enable)
X4.12 is a special input (input only). If it goes low for more than 0.5ms the PWM generation
of the power stage is disabled by hardware. Additionally, this bit is mapped directly to the
Control Word bit 1. To disable this feature, the input must be wired to 24V logic supply.
7.3 Master Encoder
The master encoder can be used for applications where high-speed synchronization is
needed, such as winding application, indexing positioning mode, etc.
The parameter Encoder Source defines whether the master encoder is connected to the X10
(RJ45) or the X12 (DSUB 9) connector. X10 is looped through to the master encoder
connector X11 (RJ45). This simplifies the loop through cabling of the encoder signals.
Parameter Name UPID Description
Encoder Source 172Ah Defines the source of the Master Encoder:
• 0: None
• 1: Encoder Input X10
• 2: Ext Sensor Input X12
The encoder type parameter defines the signal type of the master encoder. At any rate the
signals have to be differential RS422. When using a SD(Z) master encoder, the step signal
has to be connected to A, /A, Dir signal to B, /B and the Zero to Z, /Z.
Parameter Name UPID Description
Encoder Type 128Eh Defines the Master Encoder Type:
• 0: None
• 1: ABZ
• 2: AB
• 4: Step Dir (SD)
• 5: Step Dir Zero (SDZ)
The decoding parameter defines how many edges of the signals are evaluated. For AB(Z)
encoder types 1x, 2x, 4x decoding is valid; for SD(Z) encoder types only 1x and 2x decoding
is valid. If 4x decoding is selected a 2x decoding is forced without error generation.
Parameter Name UPID Description
Decoding 128Fh Defines the Master Encoder decoding:
• 0: 1x
• 1: 2x
• 2: 4x
With the direction parameter the count direction of the encoder evaluation can be defined.
Parameter Name UPID Description
Direction 1290h Defines the Master Encoder direction:
• 0: Positive
• 1: Negative
Page 90/105 User Manual Motion Control SW / 07.09.2011 NTI AG / LinMot