Items and operators of the PSRmodular Software
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In the “Mandatory safety door opening” operating mode, the “GUARD-LOCKING” operator
indicates an error if it does not detect the opening of the safety door (“G
ATE”) after a signal
change of the “L
OCK_FBK” input. In this example, the “Enable Error Out” option has also
been selected to show the malfunction in the time diagram.
The operator demands the enabling of the interlock, however the safety door is not opened
and the “L
OCK_FBK” remains at logic “1”. Consequently, when the enabling/blocking cycle
ends, the “GUARD-LOCKING” operator changes the “E
RROR” signal from logic “0” to logic
“1” at moment “E”.
Figure 5-121 Signal behavior in the example for the “GUARD-LOCKING” function block
in “Mandatory safety door opening” operating mode with error (door is not
opened despite request)
Parameters
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 “0” to “1” is checked. In the case of the “Monitored” option, the dou-
ble transition from “0” to “1” and back to “0” is checked.
Figure 5-122 “Manual” (left) and “Monitored” (right) reset
ERROR
GATE
LOCKOUT
OUT
UNLOCK_CMD
LOCK_FBK
SIGNALS
Time (ms) 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
E
RESET
OUTPUT
t2 = 250 ms
5 s > t1 > 250 ms
t1
t2
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