Siemens SIMATIC KP8, Operating Instructions Manual

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Technical specifications
9.2 Technical specifications
KP8, KP8F
Operating Instructions, 10/2010, A5E03284305-01
85
KP8 - digital inputs/outputs
Connectable Keys, switches
Number of digital inputs/outputs, standard mode 8
Electrically isolated from internal logic
No
Input voltage
 Nominal value

With "0" signal

With "1" signal
 +24 VDC

0 … +5 V

15 … 30 V
Input current for signal "1" Typically 5 mA for 24 V
Delay in the digital inputs/outputs 0.3 ms
Connection mechanical switches Yes
Bounce time ≤ 10 ms

Permitted resistive loads
 Lamp load, permissible

0,1 A
 2 W
Energy, inductive ( max.) 200 mWs
Output voltage
 With "0" signal

With "1" signal
 Max. 2 V no load

Min. supply voltage –3 V
Output current

With "0" signal

With "1" signal

Max. 1 mA

Cumulative current for all outputs 800 mA
Switching frequency, max. at

Resistive load

Lamp load

100 Hz

8 Hz
KP8 - fail-safe digital inputs/outputs
Additionally, with KP8F, the following applies for the fail-safe digital inputs:
Number of fail-safe digital inputs 2
Number of fail-safe outputs Corresponding to PROFIsafe process values
Cable length

Unshielded cable, maximum

Shielded cable, maximum

1 m

3 m
Response time for
1oo1 and 1oo2 if there are no faults
6 to 22 ms
Response time for
1oo1 and 1oo2 in the event of a fault
10 to 27 ms
Acknowledgment time in safety mode 15 to 35 ms
Signal duration, minimum 22 ms