Compax3
Accessories
C3I20T11 / C3I32T11
360
192-120103 N13 C3I20T11 / C3I32T11 December 2010
9.1.1.1
Transmitter systems for direct drives
The Feedback option F12 makes it possible to operate linear motors as well as
torque motors. Compax3 supports the following transmitter systems:
Special encoder systems for direct
drives
Option F12
Analog hall sensors
Sine-Cosine signal (max. 5Vss*; typical
1Vss) 90° offset
U-V signal (max. 5Vss*; typical 1Vss)
120° offset.
Encoder
(linear or rotatory)
Sine-Cosine (max. 5Vss*; typical 1Vss)
(max. 400kHz) or
TTL (RS422) (max. 5MHz; track A o. B)
with the following modes of commutation:
Automatic commutation
(see on page
360) or
U, V, W or R, S, T commutation signals
(NPN open collector) e.g. digital hall
sensors, incremental encoders made by
Hengstler (F series with electrical
ordering variant 6)
Digital, bidirectional interface
All EnDat 2.1 or EnDat 2.2 (Endat01,
Endat02) feedback systems with
incremental track (sine-cosine track)
linear or rotary
max. 400kHz Sine-Cosine
Distance coded feedback systems
Distance coding with 1VSS - Interface
Distance coding with RS422 - Interface
(Encoder)
*Max. differential input between SIN- (X13/7) and SIN+ (X13/8).
The motor performs automatic commutation after:
Power on,
A configuration download or
An IEC program download
The time duration (typically 5-10 sec) of automatic commutation can be optimized
with the start current (see in the optimization display of the C3 ServoManager;
given as a percentage of the reference current). Note that values that are too high
will cause Error 0x73A6 to be triggered.
Typically the motor moves by 4% of the pitch length or, with rotary direct drives 4%
of 360°/number of pole pairs - maximum 50%.
Note the following conditions for automatic commutation
During automatic commutation the end limits are not monitored.
Actively working load torques are not permitted during automatic commutation.
Static friction deteriorates the effect of automatic commutation.
With the exception of missing commutation information, the controller/motor
combination is configured and ready for operation (parameters correctly assigned
for the linear motor/drive). The transmitter and the direction of the field of rotation
in effect must match.
The auto-commutating function must be adapted to fit the mechanics if necessary
during commissioning.
