Phoenix Contact PSRmodular - Figure 5-47: Time Diagram for Manual Reset (Left) and Monitored Reset (Right)

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Items and operators of the PSRmodular Software

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Double NC

Double NC/NO

* Simultaneity failure: when changing state, the maximum time between the input signals

was exceeded.

Manual Reset If this option is selected, a reset must be performed manually every time the function block

is activated. Otherwise, the activation of the output directly follows the state of the inputs.

Reset Type There are two types of reset: “Manual” or “Monitored”. If the “Manual” option is selected, only

the signal transition from logic “0” to logic “1” is checked. In the case of the “Monitored” op-

tion, the double transition from logic “0” to logic “1” and back to logic “0” is checked.

Figure 5-47 Time diagram for “Manual” reset (left) and “Monitored” reset (right)

StartUp Test When this function is selected, the safety switch must be triggered on machine startup. This

test is performed by activating and deactivating the safety switch.

Filter (ms) The filter can be configured with a value between 3 and 250 ms and helps suppress contact

chatter. The length of the filter time affects the calculation of the response time of the safety

function.

IN 1 IN 2 OUT Simultaneity failure*

0 0 0 -

0 1 0 X

1 0 0 X

1 1 1 -

IN 1 IN 2 OUT Simultaneity failure*

0 0 0 X

0 1 0 -

1 0 1 -

1 1 0 X

NOTE:

Inputs at a function block must always be used in ascending order.

Example: If Inputs 1 and 2 are used for the function block, Input 3 must be used for the

reset input.

MANUAL

RESET

OUTPUT

t = 250 ms

MONITORED

RESET

OUTPUT

t2 = 250 ms

5 s > t1 > 250 ms