INSTRUCTION MANUAL DAAB AUTOMATIC CONTROL UNIT EP105
26
Revision 3
• Safety edges
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 EP105 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 has been disabled, the LED starts
flashing and is extinguished the next time the door is operated in the direction in which it was activated.
!
The safety edge monitor only works correctly if the stop circuit and the limit switch are connected as described in this
instruction manual. See the sections "Low current" and "Signal reference".
Setting safety edges
The factory setting for safety edge in closing is fixed limits between 5 kΩ and 15 kΩ. If the safety edges used remain within
these limits, no adjustment to safety edge impedance is necessary. If C111, C121, C131 and C141 are set to 2 for the safety
edge concerned, the fixed limits are used. If you wish to specify safety edge impedance, set the channel concerned to 1 and
specify safety edge impedance in C115, C125 and C135 for the safety edge concerned. To completely disable safety edge
inputs that are not used, set C111, C121, C131 and/or C141 to 0 for the safety edge concerned.
• C111, setting for SE.C1
• C121, setting for SE.C2
• C131, setting for SE.O1
• C141, setting for SE.O2
0 = Disabled safety edge, factory setting for SE.O1 and SE.O2.
1 = Specified impedance for safety edge in C115, C125, C135 and C145 applies.
2 = Fixed limits for impedance, factory setting for SE.C1 and SE.C2.
Reading off the impedance value for safety edges
The impedance value for the safety edge can be read between 0.0 and 99.9 kΩ in the following channels:
• C114, impedance value for SE.C1
• C124, impedance value for SE.C2
• C134, impedance value for SE.O1
• C144, impedance value for SE.O2
Setting the impedance value for safety edges
The impedance value for the safety edge can be read between 1.0 and 9.9 kΩ in the following channels:
• C115, impedance value for SE.C1 if C111 = 1
• C125, impedance value for SE.C2 if C121 = 1
• C135, impedance value for SE.O1 if C131 = 1
• C145, impedance value for SE.O2 if C141 = 1
!
Note that the factory setting for SE.O1 and SE.O2 is that the safety edges are disabled.
!
Note that if you enter the value 0 in C111, C121, C131 or C141, the safety edge input is disabled.
A safety edge can only be connected in series.
When safety edges are connected in series, one resistor is used in the outermost safety edge. If the fixed limits would not
work with the chosen resistor, set 1 in the channel concerned. You can read the current impedance value in channels C114,
C124, C134, C144 and then check them against the values in the corresponding channels described above, depending on
selected function.