Siemens SINAMICS V90 User Manual

Control functions
7.5 Internal position control (IPos)
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
239
7.5.3
Selecting a positioning mode - absolute/incremental
In the internal position control mode, you can select between absolute positioning mode and
incremental positioning mode with the parameter p29241.
Parameter
Range
Default
Unit
Description
p29241 0 to 3 0 - Absolute or incremental positioning mode:
• 0: incremental
• 1: absolute
• 2: absolute, positive (only for a rotary axis
with modulo correction)
• 3: absolute, negative (only for a rotary
axis with modulo correction)
NOTICE
Pre-conditions for using the absolute mode
The absolute mode can be used only after:
• the axis has been referenced for incremental measuring system. Refer to Section
"Referencing (Page 241)" for detailed information about referencing.
• the axis has been adjusted for absolute measuring system. Refer to Section "Adjusting
an absolute encoder (Page 207)" for reference.
Example

Siemens SINAMICS V90 Specifications

General

Power Range	0.05 kW to 7.0 kW
Protection Class	IP20
Communication	USS/Modbus RTU
Feedback	Incremental encoder
Input Voltage	1AC 200 V to 240 V, 3AC 380 V to 480 V
Control Modes	Position, Speed, Torque
Operating Temperature	0 °C to +40°C
Storage Temperature	-40°C to +70°C
Relative Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000 m above sea level