Siemens SIMOTRAS 6SG7050, Operating Instructions Manual

Page: 368 / 604

Parameter list 01.04
11-20
SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
PNU Description Value range
[Unit] No. indices See
Change
P143
FDS
(G145)
Setting the maximum speed for pulse encoder operation
The speed set in this parameter corresponds to an actual speed (K0040) of
100% = rated motor speed.
1.0 to 6500.0
[rev/min]
0.1rev/min Ind: 4
FS=1450.0
Type: O2 P052 = 3
P051 = 40
Online
Control parameters for speed sensing with pulse encoder P144 to P147:
P144 and P147 determine the basic setting for actual speed sensing by means of pulse encoder (single or multiple evaluation of pulse
encoder signals and nominal measuring time) and thus also define the lowest possible measurable speed (minimum speed).
P145 and P146 can be used in special cases to extend the measurable speed range down to even lower speeds, on the basis of the
minimum speed defined by the settings in P144 and P147.
P144
FDS
(G145)
Multiple evaluation of encoder signals
0 1x evaluation of pulse encoder signals
1 2x evaluation of pulse encoder signals (for encoder types 1, 1a,
2)
2 4x evaluation of pulse encoder signals (for encoder types 1, 1a)
Note:
In contrast to the 1x evaluation method, 2x or 4x evaluation reduces the
minimum measurable speed by a factor of 2 or 4 respectively, but may
produce an "unsteady" actual speed value on encoders with unequal
pulse/pause ratio or without an exact 90° displacement between encoder
signals.
0 to 2
1 Ind: 4
FS=0
Type: O2 P052 = 3
P051 = 40
Online
P145
FDS
(G145)
Automatic measuring range switchover for measurement of low
speeds - switchover of multiple evaluation
0 Automatic switchover of multiple evaluation of pulse encoder
signals OFF (i.e. P144 is always active)
1 Automatic switchover of multiple evaluation of pulse encoder
signals ON (i.e. when P144 = 0, 2x evaluation is selected for
low speeds and 4x evaluation for very low speeds. When P144
= 1, 4x evaluation is selected for low speeds)
As opposed to P145 = 0, this setting reduces the minimum
measurable speed by up to a factor of 4.
Caution:
Switching over the multiple evaluation method for encoder pulses also
affects the position sensing function in the measuring channel. For this
reason, this setting may not be used in conjunction with positioning
operations. Connectors K0042 to K0044 are inoperative when P145 = 1.
0 to 1
1 Ind: 4
FS=1
Type: O2 P052 = 3
P051 = 40
Online
P146
FDS
(G145)
Automatic measuring range switchover for measurement of low
speeds - switchover of measuring time
0 Automatic switchover of measuring time OFF
(i.e. P147 is always active)
1 Automatic switchover of measuring time ON
This setting extends the measuring time for low speeds (based
on the measuring time set in P147, i.e. when P147 = 0, the
nominal measuring time is switched over to 2 ms for low speeds
and to 4 ms for very low speeds. When P147 = 1, the nominal
measuring time is switched over to 4 ms for low speeds)
Caution:
When P146=1, the minimum measurable speed can be reduced by up to a
factor of 4 as opposed to a 0 setting. However, this setting results in a
longer actual speed sensing delay in the extended minimum speed range.
0 to 1
1 Ind: 4
FS=1
Type: O2 P052 = 3
P051 = 40
Offline