1PosUniversal/Digital
7.10 Technical specifications
ET 200S Positioning
378 Operating Instructions, 05/2007, A5E00124871-04
Technical specifications 1PosU
Encoder connection SSI
Position detection Absolute
Differential signals for SSI data and SSI clock According to RS422
Data transmission rate and line length with
absolute encoders (twisted pair and shielded)
• 125 kHz max. 320 m
• 250 kHz max. 160 m
• 500 kHz max. 60 m
• 1 MHz max. 20 m
• 2 MHz max. 8 m
Age of the encoder value
• Max. (2 * frame runtime) + 64 µs
• Min. frame runtime
Frame runtime
• 125 kHz
• 250 kHz
• 500 kHz
• 1 MHz
• 2 MHz
Monoflop time
1
13 Bit
112 µs
56 µs
28 µs
14 µs
7 µs
64 µs
25 Bit
208 µs
104 µs
52 µs
26 µs
13 µs
Status, Diagnostics
Change in actual value (up)
Change in actual value (down)
Status display positioning in operation
Status display DI0 (minus hardware limit switch)
Status display DI1 (plus hardware limit switch)
Status display DI2 (reducing cam)
Group error on the 1PosU
Diagnostic information
UP LED (green)
DN LED (green)
LED POS (green)
LED 1 (green)
LED 5 (green)
LED 2 (green)
SF LED (red)
Yes
Response Times
Update rate for feedback messages 2 ms
Response time at the switchover or switch-off point At incremental encoder:
Output delay + 30 µs
For SSI encoder:
Output delay + Frame runtime + 30 µs
Latch response time For incremental encoder:
Typ. 400 µs
For SSI encoder:
Typ. 400 µs + age of encoder value
1
Encoders with a monoflop time greater than 64 µs, cannot be used with the 1PosU.
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