EC-PACK EC-JET 2000, Manual

Page: 99 / 107

User Manual The1.1 version of 2018 Guangzhou EC-PACK CO.LTD
99
The raster rate varies with printhead type and raster:
Raster Type 60um PH Raster Speed
（
kHz
）
7 GEN STD 5.714
16 GEN STD 1.5
24 GEN STD 0.895
The maximum line speed calculated above should be compared with that expected for the
production line – use the section “Line Speeds Per Product Frequency” later in this manual if
necessary.
The line speed may also be limited by the encoder signal response:
Max. Encoder Speed (m/s) = Encoder Pitch (mm) x Specified Frequency (kHz)
Where:
Encoder Pitch = value from table in Step 2 for encoder/ gearing
Specified Frequency = Limiting Signal Frequency (see the following table).
The specified frequency varies with encoder type:
Shaft Encoder Frequency
（
kHz
）
2500ppr 20.0
5000ppr
80.0
10000ppr
This gives the following maximum encoder speeds for standard EC-JET encoders and wheels:
Encoder Maximum Encoder Speeds for EC-JET Standard
Wheel (188.2mm)
2500ppr 0.075 1.5m/s
5000ppr 0.0375 3m/s
10000ppr 0.0188 1.5m/s
The maximum encoder speed must also be higher than the production line maximum speed.
Referring back to the example, the actual raster pitch is 0.375 mm (Step 2) and the number of
rasters is 102 (Step 1).
Printed Message Length (mm) =102×0.3750 (mm)
=38.25 (mm)
This will fit in the target area of 38mm
。
The message is printed using the Midi 7 GEN STD raster with a raster rate of 5.33 kHz.
Max. Line Speed (m/s) =0.375 mm × 5.33 kHz