Siemens SINUMERIK 840C - Manual (Page 497)

7 Drive Machine Data (SIMODRIVE Drive MD) 04.96
7.3.2 Drive MD (data description)
Notes:
• The pulse frequency can be specified only in the quantization given in the table above.
Other frequency inputs are rounded up or down to the next closest table value, e.g. 3150
Hz to 3200 Hz.
Calc. dead time current closed-loop 1101
Default value Lower input limit Upper input limit Units
62 0 124 µ s
Active on
Power On
The calculation dead time is the time which elapses between the start of a current control
clock cycle (input of current setpoint) and the activation of the control voltage setpoints on the
gating unit ASIC. The standard default value is automatically loaded during initial start-up when
machine data M1102 is input. As from software version 5 the default value is automatically
loaded during initial start-up and with the function "Calculate controller data" on the basis of
given configuration (1 axis/2 axis FDD/MSD etc.). In order to make the setpoints on all power
sections "valid" simultaneously (to achieve uniform dynamic response), the time required to
calculate the most complex axis (double axis) is entered.
Note:
Limits of calculation dead time
MD 1101 < MD 1000 (=current controller clock cycle)
for 611 D hardware MD 1101 <
T
PBM
–––––
4
1
–––––––––––
4 x MD 1100
=
Module:
Default: 62 µ s
Complete module Drive module
6SN1130 - 1 DAXX - XXXX 6SN11XX - ODC 1X - XXXX
6SN 1130 - 1 DBXX - XXXX 6SN11XX - ODH 1X - XXXX
for 611 D hardware standard/performance T
PBM
1
–––––––––––
MD 1100
= <
Controller components
Standard Performance
6SN1118 - X DM XX - XXXX 6SN1118 - XDG2X - XXXX
6SN1118 - XDH2X - XXXX
Default: 100 µ s Default: 62 µ s
_______
* A preselection with synchronous sampling period (T
PWM
) with respect to the controller cycles can be made
via the toggle button.
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SINUMERIK 840C (IA)