15
XtrapulsPac - User Guide
Chapter 2 – Commissioning
2.4.3
-
P
OSITION SENSORS
The
XtrapulsPac
drive has got 2 position sensor inputs: one for resolvers and a second for encoders.
Transmitter resolver type or SinCos tracks resolver type can both be connected to the drive resolver input.
Many different encoder types can also be connected to the
XtrapulsPac
drive encoder input: TTL (square)
signals, SinCos signals, incre Hall effect sensor channels, absolute encoders with HIPERFACE
communication protocol.
All internal position setpoints and displays are given by using the “user unit“ definition. All internal speed setpoints
and displays are given by using the “user unit / second“ definition. So, it is necessary to define inside the drive the
relationship between sensor data and “user unit” value.
Resolver input configuration
Select
Enable resolver input
if a resolver is connected to the drive. Otherwise, the
Enable resolver input
can
be unselected.
Select the appropriate
Resolver type
:
- A
Transmitter
resolver is supplied by the drive modulation signal at 8 kHz. Transformation ratios from 0.3 to
0.5 are acceptable. The modulated Sine and Cosine signals of the resolver are connected to the drive
resolver input.
- A
SinCos tracks
resolver is supplied by the drive +5 V sensor supply. The Sin and Cos output signals
generally have an amplitude of 1 Vpp (electrically compatible with SinCos encoders) and are connected to
the drive resolver input.
For a
Transmitter
resolver type:
- Enter
the
Pole pairs
for a rotating resolver: number of Sine or Cosine signal periods over one shaft
revolution (generally, the value is 1). This parameter affects only the motor RPM speed display.
For a
SinCos tracks
resolver type:
- Enter
the
Pole pairs
for a rotating motor: number of Sine or Cosine signal periods over one shaft revolution
(generally equal to the motor pole pairs).
-
If the Sin and Cos signals amplitude is higher than 1 Vpp, increase the
Transformation ratio
value
accordingly.
-
Then move the motor manually and check that the “resolver cable interrupted” fault is not released.
Adjust the resolver
Zero mark shift
and
Zero mark width
parameter values. The resolver provides one zero
mark per pole pair.
Select
Reverse position
in order to reverse the resolver counting direction, if required.
Encoder input configuration
Select
Enable encoder input
if an encoder is connected to the drive. Otherwise, the
Enable encoder input
can
be unselected.
Select the appropriate encoder type:
- TTL encoders refer to square quadrature signals electronically compatible with RS422 standard.
- SinCos encoders refer to analog Sine and Cosine signals with 90° phase shift and 1 Vpp amplitude.
- Hall effect sensors refer to extra commutation channels for the motor current commutation. Hall effect sensor
signals are adapted to the motor pole pairs.
- HIPERFACE
refers to standard communication protocols for absolute single-turn or absolute multi-turn
encoders.