Manual – IPOSplus®
137
12
P94x IPOSplus
®
encoder
P9xx IPOS Parameters
12.5.8 P948 Automatic encoder replacement detection
Setting range: ON/OFF
This parameter is only effective with Hiperface
®
encoders.
• ON: A replaced Hiperface
®
encoder is detected. Reference travel is required before
the "IPOS referenced" bit is set.
Note the following when operating a linear motor with AL1H motor encoder:
If the linear motor was commutated in the dialog "Encoder adjustment" during initial
startup, the "LSM commutated" bit will be cleared in the IPOS status word after en-
coder replacement. A new commutation travel must be triggered to enable the invert-
er. Doing so will reset the "LSM commutated" bit. Commutation travel is triggered
automatically if the "/CONTROLLER INHIBIT" terminal is set to "1" and no terminal
set to "Enable" receives a "1 signal". If a terminal set to "Enable" receives a "1 signal",
or if no terminal is set to "Enable", error message F81 will be issued.
For linear motors with AL1H motor encoder, SEW-EURODRIVE recommends to set
parameter P948 to "OFF". After having replaced the encoder, test the drive system
with reduced velocity and force in jog mode.
• OFF: The Hiperface
®
encoder is always referenced. The "IPOS referenced" bit is set.
Note the following when operating a linear motor with AL1H motor encoder:
If the linear motor was commutated in the dialog "Encoder adjustment" during initial
startup, the "LSM commutated" bit will be maintained in the IPOS status word. The
drive system can be enabled immediately.
INFORMATION
If P948 is switched off and on again, the "IPOS referenced" bit is set to "0" once you
have restarted the MOVIDRIVE
®
.
Reference travel is necessary to rest the "IPOS referenced" bit to "1".
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