Electronic Gear Ratio Setting Examples - YASKAWA SGD7S series Product Manual

5.16 Electronic Gear Settings

5.16.2 Electronic Gear Ratio Setting Examples

5.16.2 Electronic Gear Ratio Setting Examples

Setting examples are provided in this section.
• Rotary Servomotors
Step
1
2
3
4
5
6
• Linear Servomotors
A setting example for a Serial Converter Unit resolution of 256 is given below.
Step
1
2
3
4
5-50
Description
Encoder:
24 bit
• Ball screw lead: 6 mm
Machine
• Gear ratio: 1/1
Specifications
Encoder Resolution 16,777,216 (24 bits)
0.001 mm (1 μm)
Reference Unit
Travel Distance per
6 mm/0.001 mm =
Load Shaft Revolution
6,000
(Reference Units)
B
Electronic Gear Ratio
A
Pn20E: 16,777,216
Parameters
Pn210: 6,000
Description
0.02 mm (20 μm)
Linear encoder pitch
0.001 mm (1 μm)
Reference Unit
B
Electronic Gear Ratio
A
Pn20E: 256
Setting Parameters
Pn210: 20
Machine Configuration
Ball Screw
Reference unit: 0.001 mm
Load haft
Ball crew lead:
Load haft
6 mm
• Rotational angle per rev-
olution: 360°
• Gear ratio: 1/100
16,777,216 (24 bits)
0.01°
360°/0.01° = 36,000
16,777,216 1 B
×
= =
6,000 1 A
Pn20E: 167,772,160
Pn210: 3,600
Machine Configuration
Reference unit:
0.02 mm (20 m)
Forward direction
1 (μm)
× 256
=
20 (μm)
Rotary Table Belt and Pulley
Reference unit: 0.005 mm
Reference unit: 0.01°
Gear ratio:
1/100
Gear ratio:
1/50
Encoder: 24 bit
• Pulley dia.: 100 mm
(Pulley circumference:
314 mm)
• Gear ratio: 1/50
16,777,216 (24 bits)
0.005 mm (5 μm)
314 mm/0.005 mm =
62,800
B
16,777,216 100
×
=
A
6,000 1
Pn20E: 838,860,800
Pn210: 62,800
Load haft
Pulley dia.:
100 mm
Encoder: 24 bit
16,777,216 50
×
62,800 1