Stober SI6A062 - Tab. 54 SSI Specification; Tab. 55 Specification for TTL Differential Incremental Signals

STOBER 6 | Technical data
02/2019 | ID 442728.05
61
SSI encoders
Specification SSI signals
U
2
12V
DC
(unregulated)
I
2max
250mA
Encoder design Single-turn and multi-turn
Clock frequency 250kHz and 600kHz
Sampling rate 250 µs
Monoflop time ≤ 30 µs
Code Binary or gray
Format 13, 24 or 25bits
Transfer Double or single
Max. cable length 100m, shielded
Tab. 54: SSI specification
Incremental encoders
Specification Incremental signals
U
2
12V
DC
(unregulated)
I
2max
250mA
f
max
1MHz
Signal level TTL, differential
Max. cable length 100m, shielded
Tab. 55: Specification for TTL differential incremental signals
Information
Calculation example – Limit frequency f
max
for an encoder with 2,048 pulses per revolution: 3,000 revolutions per minute (equivalent to 50
revolutions per second) * 2,048 pulses per revolution = 102,400 pulses per second = 102.4kHz
<< 1MHz
Information
Using a HT6 adapter for level conversion from HTL signals to TTL signals, it is also possible to
connect a differential HTL incremental encoder to terminal X4. Note that, with an external power
supply, the maximum level of 20V
DC
for the the HTL signals may not be exceeded.