Reer MOSAIC M1 Installation And Use Manual page 217

MODULAR SAFETY INTEGRATED CONTROLLER MOSAIC
Example of operation in the "Mandatory Gate Opening" mode
In this example the user unlocks the guard lock with the "SWITCH" block. The "LockOut"
signal controls a "STATUS" SIL 1/PL c output that controls the guard lock electromagnet,
the status of which is detected by the "LOCK FEEDBACK" input block. "Output1" indicates
the status of the operations.
The status of the safety gate is monitored by the "Gate" input via the "E_GATE" input block,
the "Mandatory Gate opening" parameter is selected.
The guard lock used in the example continues to be locked when the electromagnet is not
energised. Therefore the "Interlock spring" option must be selected.
Figure 117 Example of operation in the Mandatory Gate Opening mode
➔
The Guard Lock operator parameters are shown on the right. On the left there is an example of an
application diagram. The electromagnet feedback consists of two contacts, one normally closed
and one normally open. When the electromagnet is energised the two contacts switch status. The
gate feedback consists of two normally closed contacts.
Figure 118
shows the traces relative to the operation. These are described in detail below:
(1) At this time the user requests to unlock the guard lock. The "COMMAND" signal
switches from LL0 to LL1, and the "Output1" signal switches from LL1 to LL0.
(2) At this time the electromagnet is activated with a delay of "Unlock Time", after the
command is sent. This delay has been set to 0.5 seconds. The "ACTIV." signal
switches from LL0 to LL1.
(3) At this time the electromagnet is actually activated, 95ms after the command was
sent. This delay is due to the technical characteristics of the electromagnet. In any
case, 95ms is less than 100ms ("Feedback Time") and so no errors have occurred.
(4) At this time the guard lock is unlocked and the user opens the gate. The FBK_GATE
signal switches from LL1 to LL0.
(5) At this time the user closes the gate and the FBK_GATE signal thus switches from
LL0 to LL1.
(6) At this time the user releases the unlock gate command. The "Guard Lock" detects
the gate closed condition, via the FBK_GATE signal, and sends a command to lock
the guard lock. The "ACTIV." signal switches from LL1 to LL0.
(7) At this time the electromagnet is actually deactivated, approx. 95ms after the
command was sent due to the technical characteristics of the device. The guard lock
is now locked.
8540780 • 25/01/2023 • Rev.43 217