Project Engineering
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5.2.4.7.3 Belt Stop Signal
The parameterizable “belt stop signal” function enables a high system availability for applications where the
conveyor belt is stopped operationally. It stops the muting sequence temporarily.
To this end, if there is an active signal on the “belt stop signal” input, the timers that monitor the initiation and
maintenance of the muting sequence are paused. If the signal changes to 0, the muting sequence is contin-
ued and the timers continue to count.
Process for interrupting the muting sequence
Condition
Comment
1.
Normal muting sequence
“Belt stop signal” on 0
Muting sequence takes place as
normal
2.
Muting sequence is
interrupted
“Belt stop signal” on 1
Timers for monitoring the muting
sequence are interrupted
3.
Normal muting sequence
“Belt stop signal” on 0
Timers continue to count. Muting
sequence is continued
Sample signal sequence using cross-muting as an example:
Muting
active
Belt stop
signal
Safety during belt stop:
To make it more difficult to bypass the ESPE with the belt stop function active, the following actions cause the
muting to be cancelled:
• Changes to the safety field status (penetration
no penetration or no penetration
penetration) and
• Changes to muting signals.
This means that the muting remains active during existing penetration (e.g. pallet interrupts ESPE), but a
change in the safety field status with the belt at a standstill causes the muting to be cancelled, as it is as-
sumed that a person is trying to bypass the ESPE.
3 seconds after the belt stop signal, the ESPE continues monitoring the MS.
NOTE!
• The maximum duration of an active belt stop signal is 8 h. After this time, the muting
sequence is continued automatically.
• The belt stop function must also be configured on the ESPE. Otherwise, the “belt stop
signal” input is not taken into account.
• For information on status messages, see
• The belt stop function uses the same input as the Full Muting Enable function.
