Reer Mosaic MI8 Installation And Use Manual page 124

MODULAR SAFETY INTEGRATED CONTROLLER MOSAIC
"LockOut" output
This signal controls the guard lock electromagnet and can assume LL0 and LL1 value.
"ErrorOut" output
If enabled, when this signal is set to LL1 it indicates an error in the control of the guard
lock. It is set to LL0 when no errors have occurred.
Operation: general description
signal, the status of a door/gate (E-
when the guard lock is closed and locked.
Operation in the "no Gate" mode
In this case, the user must select t
The Lock_Fbk input must always be connected to a
ent (see the
LOCK
section on page 91) that verifies the
FEEDBACK
status of the guard lock electromagnet.
The UnLock_cmd input can be connected freely in
the diagram and determines the request to unlock
the guard lock (when set to LL1).
The Output signal is LL1 (TRUE) if the safety guard
is closed and locked. When an unlock command is applied to the UnLock_cmd input, the
Output signal is set to LL0 and the guard lock is unlocked via the LockOut signal.
The Output signal can also be set to LL0 (FALSE) when error conditions are present (e.g.
open door with guard lock locked, Feedback Time exceeding the maximum allowed, etc.).
When the Unlock_cmd signal is detected, the LockOut signal unlocks the guard lock after
the UnLock Time, a parameter that can be defined by the user.
The time after which the electromagnet is activated depends entirely on the
technical/physical characteristics of the specific device and may therefore vary according
to the type of guard lock used. Thus, since the LockOut signal controls the activation of
this device, the status of the Lock_Fbk feedback signal will change at different times,
depending on the type of guard lock. This variability can be avoided by changing the
value of the Feedback Time parameter, which is the maximum delay accepted by the
Lock_Fbk signal switches status following a request to
activate the electromagnet. Clearly, the following condition must be met:
Feedback Time ≥ Electromagnet activation time
This will now be explained using a practical example.
124 8540780 • 23/03/2017 • Rev.31