Ncu Box For Sinumerik 840D - Siemens SIMODRIVE 611 digital Configuration Manual

2 System Configuration
2.6 Control units
For SINUMERIK
840Di powerline
SINUMERIK 802D
Table 2-3 Comparison table
Control unit with
Max. electrical fundamental frequency for motor
Encoder limit frequency, motor encoder
Encoder limit frequency, motor encoders for Safety
Integrated
Encoder limit frequency, direct measuring system
Encoder limit frequency resolver
Encoder limit frequency, direct measuring system for
Safety Integrated
Pulse multiplication:
S
Incremental encoder
S
Resolver (14/12–bit)
Maximum cable length, encoder with voltage signal
Smooth running characteristics (measure of the posi-
tion fluctuation by n in the range 10% n
set
to a 10 mm spindle pitch/motor revolution)
S
1–axis version
S
2–axis version
1) The following limitations/secondary conditions apply for 420 kHz:
– Cable to be used: Siemens cable, Order No. [MLFB]: 6FX2002–2CA31–1CF
– Maximum permissible encoder cable length: 20 m
– Encoder characteristics: "–3dB cutoff frequency" greater than or equal to 500 kHz
Examples for permissible encoders: ERA 180 with 9000 pulses/revolution and
ERA 180 with 3600 pulses/revolution manufactured by Heidenhain
– Amplitude monitoring up to 420 kHz is active.
2.6.4

NCU box for SINUMERIK 840D

2-54
www.aotewell.com
S
SIMODRIVE 611 universal E HRS (economic high resolution) as 2–axis
control units for encoders:
– sin/cos or
– EnDat or
– TTL (only PROFIBUS DP interface for the controller)
1400 Hz
350 kHz
–
350 kHz
12–bit 432 Hz
14–bit 108 Hz
–
2048
4096/16348
50 m
referred
N
0.1 µm
0.1 µm
If the digital drive modules are operated in conjunction with the SINUMERIK
840D CNC control system, then the NCU box must be located immediately to
the right of the infeed module.
Fig. 2-5 Digital closed–loop control with SINUMERIK 840D
SIMODRIVE 611 Configuration Manual (PJU) – 05/2008 Edition
sales@aotewell.com
611 universal High Standard
Closed–loop
control
600 Hz
200 kHz
200 kHz
200 kHz
–
200 kHz
128
–
50 m
0.2 µm
1.5 µm
© Siemens AG 2008 All Rights Reserved
Industry Automation
05.08
05.01
High Performance
Closed–loop
control
1400 Hz
1)
350 kHz (420 kHz)
1)
300 kHz (420 kHz)
1)
350 kHz (420 kHz)
–
1)
300 kHz (420 kHz)
2048
–
1)
50 m (20 m)
0.1 µm
0.1 µm
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