Motor control unit DCM31
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• The right display in the gate status display (horizontal bar) remains empty.
• Opening [M.C3] and closing delay [M.C2] do not have any function.
• Active leaf mode is not possible.
u) Relay output OUT
- The relay output OUT is a floating relay output for max. 24V and max. 4A.
- The following functions can be selected via [M.C4]:
• E-lock: The relay is closed during the motor start-ups (M1 and M2) in open and
close mode for the duration of the startup time [M.A6].
• Photoelectric barriers test: The relay is permanently picked up and briefly
released during a self-test. The power supply to the photoelectric barrier
transmitter is connected via the OUT relay. By switching off the transmitter
during the self-test, the receiver must signal actuation of the photoelectric
barrier. This is analysed in the software. The reaction of the LS receiver must be
follow within 2.5sec after the OUT relay is switched off.
• Status display: If the gate is in the OPEN or CLOSE end position (M1+M2, for 1-
leaf M1 only) the relay closes.
• Radio function: The OUT relay can be directly controlled in radio module mode
using the function {F8} and {F9}, in order to switch further functions outside the
control unit. In current surge mode the OUT relay switches off again 10min after
motor operation during self-test.
• Forwarding open command: If the control unit starts in open, the OUT relay is
closed for 0.5sec. Therefore, several controls can be controlled synchronously
in connection with automatic closing.
v) Running time limit
- The maximum running time of the motors can be set in seconds via [M.C5].
- If the maximum running time of a motor set using [M.C5] is exceeded while a motor
is running (e.g. in the event of a transmission failure or travelling over the limit
switch), the control unit stops both motors with the fault message {Er.24}.
w) Type of limit switch
- [M.C6] must be used to set the type of limit switch during the putting into service.
- For internal limit switches [X3], the break contact elements are connected in the
motor cable and therefore directly switch off the motor current. The control unit
detects that the motor current is no longer flowing and interprets this as the end
position. In order to start the motor again from the end position, rectifier diodes
must be connected parallel to the limit switches. (Advantage: only two cables to the
motor. Disadvantage: limit switch and diodes must be able to switch the motor
current.)
- External limit switches are connected to the terminals [Kl.16]..[Kl.21].
- During operation without limit switch the end position is detected by the electricity
stop. To this end the turn off current must be set for detection of the end position
via [M.A7]..[M.b0]. The electricity stop function cannot be used for obstruction
detection, as only one stop ever occurs (no release, no reversing). Settings in
[M.b3] have no effect.
- Operation without limit switch is only possible if the gate hits a limit stop in the end
positions.
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