Encoder Module Parameterization - Siemens Micromaster Operating Instructions Manual

Issue 04/04
4.4
To enable the Encoder Module to function correctly with the inverter, the
parameters in Table 4-1 below must be modified:
Table 4-1 Encoder Module Parameters
Param. Name
r0061 Rotor Speed
r0090 Rotor Angle
P0400[3] Encoder Type
r0403 Status word of encoder
Bit00
Bit01
Bit02
Bit03
Bit04
P0408[3] Encoder pulses per
revolution
P0491[3] Reaction on speed
signal loss
P0492[3] Allowed speed
difference
MICROMASTER Encoder Module
A5E00146708A2

Encoder Module Parameterization

Operating Instructions
Values
Indicate the speed of the rotor. Used to
check that the system is working correctly.
Indicates the current angle of the rotor. This
function is not available on single input
channel encoders.
0 = No Encoder
1 = Single Input Channel (A)
2 = Quadrature encoder without zero pulse
(Channel A+B) - The term "Quadrature"
means two periodic functions separated
by a quarter cycle or 90 degrees.
Displays status word of encoder in bit format:
Encoder module active
Encoder error
Signal o.k.
Encoder low speed loss
HW timer used
Details: See description of seven-segment
display given in the "Introduction to
MICROMASTER System Parameters".
Specifies the number of encoder pulses per
revolution.
Selects reaction on loss of speed signal.
Settings:
0 = Do not change to SLVC
1 = Change to SLVC
Used for high speed encoder loss detection.
Selects the allowable difference in calculated
speed signals between samples before it is
considered to have lost the speed signal
feedback. (Default = Calculated from inertia,
range from 0 ... 100.00)
Dependency: This parameter is updated
when P345 Motor start-up time is changed or
when a speed loop optimization is performed
(P1960 = 1).
There is a fixed delay of 40 mS before acting
upon loss of encoder at high speeds.
Caution:
When Allowed speed difference is set to 0,
then both high speed and low speed encoder
loss detection is disabled, thus encoder loss
will not be detected.
If encoder loss detection is disabled and
encoder loss occurs, then operation of the
motor may become unstable.
Commissioning
0 No
1 Yes
0 No
1 Yes
0 No
1 Yes
0 No
1 Yes
0 No
1 Yes
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