Siemens PM-E F pm DC24V PROFIsafe Installation And Operating Manual page 109

Parameter
Input delay
Short-circuit test
Behavior after channel
faults*
Channel n, n+4
Sensor supply
Sensor evaluation
Type of sensor
interconnection
Behavior of discrepancy
Discrepancy time
Reintegration after
discrepancy error
* This setting is only relevant when optional package
Input Delay of 3 ms Parameter
Note
When operating with 3 ms input delay, you must always use shielded cables if there is a
danger of overvoltage on the signal lines (see section "Electromagnetic Compatibility") to
prevent possible passivation of the fail-safe digital inputs and shutdown of the sensor power
supply.
If unshielded signal lines are used the safe behavior of the process variables is ensured.
Short-Circuit Test Parameter
This parameter can be used to activate short-circuit detection for channels set up for
"internal sensor supply."
The short-circuit test parameter is used to activate or deactivate the cyclic short-circuit test.
The short-circuit test is only useful for simple switches that do not have their own power
supply. Always use the internal sensor power supplies if the short-circuit test has been
activated (see also
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
7.5 4/8 F-DI DC24V PROFIsafe Digital Electronic Module
Range
0.5 ms, 3 ms, 15 ms
Cyclic/disable
Passivate the entire
module/Passivate the
channel
Activated/deactivated
internal/external
1oo2 evaluation /
1oo1 evaluation
1-channel;
2-channel equivalent;
2-channel, non-
equivalent
Provide last valid value;
provide 0 value
10 to 30,000 ms
Zero signal test not
required/zero signal
test required
"Applications for the 4/8 F-DI DC24V PROFIsafe electronic module"
Default Type of
Parameter
3 ms Static
Cyclic Static
Passivate the Static
entire module
Activated Static
internal Static
1oo2 Static
evaluation
2-channel Static
equivalent
Provide last Static
valid value
10 ms Static
Zero signal Static
test not
required
S7 Distributed Safety
V5.4 or higher is installed.
Fail-Safe Modules
Effective
Range
Module
Module
Module
Channel
group
Channel
group
Channel
group
Channel
group
Channel
group
Channel
group
Channel
group
).
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