Technical data
4.5 Clock
SIMOTION D410-2
68 Manual, 02/2012
SSI baud rate 100 ... 250 kBaud
Resolution absolute position SSI 30 bit
Max. cable lengths
• For TTL incremental encoder
• For HTL incremental encoder
• For SSI absolute encoder
• 100 m (bipolar signals only)
1), 3)
• 100 m (for unipolar signals)
• 300 m (for bipolar signals)
1), 2)
• 100 m
1)
Signal lines twisted in pairs and shielded.
Because the transmission technology is more robust, the bipolar connection should always be
used. The unipolar connection should only be used if the encoder type does not output push-pull
signals.
2)
As of a cable length of 200 m, use a power supply cable with a cable cross-section ≥ 0.75 mm²!
3)
100 m with remote sense
Note
The CUA32 control unit adapter also provides an encoder interface for an HTL, TTL or SSI
encoder.
The technical data of the CUA32 adapter module can be found in the
SINAMICS S120 AC
Drive
Manual.
4.5 Clock
Properties of the real-time clock
The table below contains the features and functions of the Control Unit clock.
Table 4- 17 Clock properties
Properties Meaning
Type Hardware clock (integrated "real-time clock")
Default setting when delivered DT#1992-01-01-00:00:00
Maximum deviation per day
for supply voltage switched on and switched off at
0° to 55° C
±5 s
Backup time At least 5 days (at 0 to 55° C)
Charging time 1 h
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