1PosSSI/Analog
6.10 Technical Specifications of the 1PosSSI/Analog
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
305
Technical Data of the 1PosSSI/Analog
Data for selecting an actuator
Output range (rated value) ±10 V
Load resistance
• For capacitive load
• Short-circuit protection
• Short-circuit current
Min. 1.0 kΩ
max. 1 µF
yes
ca. 25 mA
Destruction limit against voltages/currents applied
from outside
• Voltage to the outputs against MANA
• Current
Max. 15 V continuous; 75 V for max. 1 s (pulse
duty factor 1/20)
Max. DC 50 mA
Connection of actuators
• 2-conductor connection
No compensation for surge impedance
Encoder input SSI
Position detection Absolute
Differential signals for SSI data and SSI clock According to RS422
Data transmission rate and cable lengths for
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) UP LED (green)
Change in actual value (down) DN LED (green)
Status display positioning in operation LED POS (green)
Status display DI0 (minus hardware limit switch) LED 9 (green)
Status display DI1 (plus hardware limit switch) LED 13 (green)
Status display DI2 (reducing cam) LED 14 (green)
Group error on the 1PosSSI/Analog SF LED (red)
Diagnostic information Yes
Response Times
Update rate for feedback messages
Response time at the switchover or switch-off
point
Latch response time
2 ms
Output delay + Frame runtime + 30 µs
Typ. 400 µs + age of encoder value
1
Encoders with a monoflop time greater than 64 µs, cannot be used with the 1PosSSI/Analog.
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