Siemens SINUMERIK 840C - Manual (Page 346)

09.95 6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.7 Axis-specific MD 2 (axial data 2)
Switch over current setpoint 1 ) 1144*
Default value Lower input limit Upper input limit Units
60
60
1 2)
999
0.1 % of max.
current setpoint
Active on
NC Stop
Move against fixed stop
Current setpoint which is to take effect as soon as speed control mode switches to current
control mode. The percentage that has to be entered refers to the max. motor current (drive
machine data MD 1104) and the possible reduction of the max. motor current (drive machine
data MD 1105). The holding torque can be matched still further in setting data SD 320*. See
functional description for ”Travel to fixed stop”
IKA/TK speed 1) 1148*
Default value Lower input limit Upper input limit Units
500 0 4 900 000
1000 units (IS)
––––––––––––––
min
Active on
at once
If the max. speed as IKA partial setpoint is exceeded, interface signal "IKA/TKH SPEED" is set
in DB 32.
Speed tolerance endlessly turning rotary axis
(as from SW 4)
1152*
Default value Lower input limit Upper input limit Units
10 +0 +100 %
Active on
see below
If the actual speed of the "endlessly turning rotary axis" remains within the setpoint speed
tolerance defined in this machine data, interface bit "Axis in setpoint range" is set.
The tolerance monitoring is activated by switching on "Endlessly turning rotary axis" with
G[..]103 and G[..]104 and defining a new speed.
If movement is aborted in the mode group (Mode Group Ready = 0), an ERA does not have
to be explicitly reset with axis reset. ERA is reset with a mode group reset.
D component feedforward control 2nd - 8th parameter set 2)
1156*-
1180*
Default value Lower input limit Upper input limit Units
0 +0 1 000 0.1%
Active on
NC Stop
This MD has the same meaning as MD 1124*, see also functional description of parameter set
switchover.
_______
1) As from SW 3
2) As from SW 4
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 6–161
SINUMERIK 840C (IA)