Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
16
(Translation of the original operating instructions) 2500233-01-05/19
8. Manual release
Some situations require the guard locking to be released manually (e.g. malfunctions or an emergency). A function test
should be performed after release.
More information on this topic can be found in the standard EN ISO 14119:2013, section 5.7.5.1. The device can feature
the following release functions:
8.1. Auxiliary release and auxiliary key release (can be retrofitted)
In the event of malfunctions, the guard locking can be released with the auxiliary release irrespective of the state of the
solenoid.
The safety outputs are switched off when the auxiliary release is actuated. Use the safety outputs
to generate a stop
command.
The monitoring output OL is switched off; OD indicates the current state of the guard. Open the guard and close it again
after resetting the auxiliary release. The device will then operate normally again.
8.1.1. Actuating auxiliary release
1. Remove seal label or make a hole.
2. Undo locking screw.
3. Using a screwdriver, turn the auxiliary release to in the direction of the arrow.
¨
Guard locking is released.
DIP
OFF
ON
Ì
When release monitoring is active, the system enters into a latching fault when the auxiliary release is actuated.
See System status table, signal sequence incorrect status (DIA red, Lock flashes 1 time).
Ì
The system might not enter into a latching fault if the auxiliary release is actuated very slowly.
Important!
Ì
The auxiliary release must be reset at the control system level, e.g. by means of a plausibility
check (status of the safety outputs does not match the guard locking activation signal). See
EN ISO 14119:2013, sec. 5.7.5.4.
Ì
The auxiliary release is not a safety function.
Ì
The machine manufacturer must select and use a suitable release (escape release, emergency
unlocking, etc.) for a specific application. A hazard assessment is required for this purpose. It may
be necessary to take specifications from a product standard into account.
Ì
The correct function must be checked at regular intervals.
Ì
Loss of the release function due to mounting errors or damage during mounting. Check the re-
lease function every time after mounting.
Ì
Please observe the notes on any enclosed data sheets.
8.1.2. Actuating auxiliary key release
On devices with auxiliary key release (can be retrofitted), simply turn the key to release. Function as for auxiliary release.
For mounting, see the auxiliary key release supplement.
1
2
3
Figure 6:
Auxiliary release
