Siemens SIMODRIVE POSMO A User Manual

5
5.5 SIMODRIVE POSMO A functions
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SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
5.5.3 Travel to fixed stop
A linear or rotary axis can be moved in the closed–loop speed controlled
mode to a fixed endstop using the ”travel to fixed stop” function. Upon
reaching a fixed endstop, the defined torque/force is then built up.
This feature can be used, e.g. as follows:
 To clamp workpieces (e.g. to press the spindle sleeve against the
workpiece)
 To approach the mechanical reference point (refer to Chapter 5.5.1)
The following has to be done to traverse to a fixed endstop:
 Set the current to a permissible value for a fixed endstop
– P28 (max. current) = ”required current”
– P16 (max. overcurrent) = ”required overcurrent”
 Suppress the ”speed controller at the endstop” fault
– P30.0 = ”1” ”speed controller at the endstop” fault
––> is redefined to become a warning
 Move to the fixed endstop closed–loop speed–controlled (PSW.0 =
”0” or jogging)
When the endstop is reached, it is displayed as follows:
– ZSW.7 = ”1” ––> means ”warning present”
and
– P953.7 = ”1” ––> means ”speed controller at the endstop”
 Stop traversing
The following has to be observed:
Note
 The ”travel to fixed stop” function can only be practically used when
traversing in the closed–loop speed controlled mode (PSW.0 = ”0”
or jogging).
For closed–loop position controlled techniques (PSW.0 = ”1”), the
”fixed endstop reached” state can only be exited using OFF
commands.
 Limit P28 and P16 to values at which torques significantly below
the torque limit occur at the gearbox output.
P28 maximum current
P16 maximum overcurrent
 Limit the traversing velocity to a value which is significantly below
the maximum velocity at the rated speed.
Description
What should be
done?
What has to be
observed?
5 Description of the Functions
02.9904.01

Siemens SIMODRIVE POSMO A Specifications

General

Brand	Siemens
Model	SIMODRIVE POSMO A
Category	Engine
Language	English