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• Safety edge
Safety edge monitor
The integrated safety edge monitor in the automatic control unit performs a self test before the start of every movement. If
any of the safety edges is faulty, the EP104 is stopped and an error is indicated. The principle is that the automatic control
unit measures the impedance over the safety edge to ensure it matches a specified value. The impedance changes if the safety
edge is activated, if there is a short circuit or if the circuit is interrupted – the automatic control unit interprets all these
events as an activated safety edge.
LEDs indicate an activated safety edge with a constant light. If an activated safety edge is deactivated, the LED starts
flashing and is extinguished the next time the door is operated.
The safety edge monitor only works correctly if the stop circuit and the limit switch are connected as described in this
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instruction manual. See the sections "Low current" and "Signal reference".
Setting safety edges
As of version 4.06, you can used fixed limits for safety edges between 5 kohm and 15 kohm. If the safety edge used remains
within these limits, no adjustments to safety edge impedance are necessary. In C111, C121 and C131, set the channel
for the respective safety edge to 2 and the fixed limits will be applied. If you wish to specify safety edge impedance, set
the respective channel to 1 and specify safety edge impedance in C115, C125 and C135 for the respective safety edge. To
disable safety edge inputs that are not used, set C111, C121 and/or C131 to 0 for the respective safety edge.
Reading off the impedance value for safety edges
You can read the impedance value for the safety edge circuit to between 0.0 and 99.9 kΩ in the following channels:
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C114, impedance value for S.E1.
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C124, impedance value for S.E2.
•
C134, impedance value for S.E3.
Setting the impedance value for safety edges
You can set the impedance value for the safety edge circuit to between 1.0 and 9.9 kΩ in the following channels:
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C115, impedance value for S.E1.
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C125, impedance value for S.E2.
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C135, impedance value for S.E3
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Note that the factory setting for S.E3 is 0.0 which means that the safety edge input is disabled.
Note that if you enter the value 0.0, the safety edge input is disabled.
A safety edge may only be connected in series.
When safety edges are connected in series, one resistor is used in the outermost safety edge. The impedance value is set in
the relevant channel.
You can read the current values in the channels C114, C124, C134 and check them against the values in the corresponding
channels described above.
Safety edge function
The principal functions of the three safety edge inputs are:
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S.E1 for the closing movement
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S.E2 for the closing movement
•
S.E3 for the opening movement
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Note that the factory setting of S.E3 is disabled.
Safety edge functions – general
These settings are the same for a safety edge for the closing movement and a safety edge for the opening movement.
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Reverse/stop
A safety edge can be set to stop or reverse when it is activated.
S.E1 channel C112, S.E2 channel C122 and S.E3 channel C132.
1 = Reverse
2 = Stop
Option 1, Reverse, the unit will move in the opposite direction after a delay specified in channel C493.
Option 2, Stop, stops the door without reversing. Use with care – the lack of the reverse function means people may
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be trapped.
•
Reverse delay.
The delay between activated safety edge and when the change of direction begins may be set in channel C493.
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DAAB AUTOMATIC CONTROL UNIT EP104
Bruksanvisning utgåva 1 för Programversion 4.06
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