Lenze i700 User Manual

7 CiA402 device profile
7.5 Parameters for the scaling of physical values
203
Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06
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0x608F | 0x688F - Position encoder resolution
Explanation
The 0x608F
index can be used to select a specific part of a motor position for position detection. The
selection also determines the resolution of the position setpoints and the quality or rigidity of a
position control.
The selection to be made in the 0x608F:1
index directly determines the resolution of the motor
revolutions and indirectly determines the resolution of the motor revolutions to be counted.
An example illustrates this circumstance: Index 0x608F:1
= "18 bits" means that a motor revolution
is displayed in a resolution of 18 bits. The i700 servo inverter is internally dimensioned to variables
with 32 bits. Thus, the remaining 14 bits are used for counting the motor revolutions.
The Lenze setting considers the use of a Lenze motor with resolver feedback. The resolver provides
a value for a motor revolution in a resolution of approximately 16 bits.
Selection criteria
If the number of motor revolutions to be distinguished on the part of the process is not important,
the following recommendation can be given regarding the setting of 0x608F
:
Resolution of the position detection by the motor encoder
Sub. Name Lenze setting Data type
1 Encoder increments 0x00010000: 16 Bit UNSIGNED_32
2 Motor revolutions 1 UNSIGNED_32
Subindex 1: Encoder increments
Setting of the number of bits with which a mechanical motor revolution is to be resolved.
Selection list (Lenze setting printed in bold)
0x00010000 16 bits
0x00040000 18 bits
0x00100000 20 bits
0x00400000 22 bits
0x01000000 24 bits
0x04000000 26 bits
0x10000000 28 bits
0x40000000 30 bits
 Write access  CINH  OSC  P  RX  TX UNSIGNED_32
Subindex 2: Motor revolutions
Number of motor revolutions
• Only the setting "1" is accepted.
Setting range (min. value | unit | max. value) Lenze setting
111
 Write access  CINH  OSC  P  RX  TX UNSIGNED_32
og (encoder increment) / Log(2) + 10 bit

Lenze i700 Specifications

General

Control Type	Vector control, V/f control
Safety	STO (Safe Torque Off)
Protection Class	IP20
Frequency	50/60 Hz
Communication Interfaces	CANopen
Cooling	Air cooled
Protection Features	Overvoltage, Undervoltage
Ambient Temperature	-10°C to +45°C
Frequency Range	0 Hz to 300 Hz
Supply Voltage	3-phase AC