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DAAB AUTOMATIC CONTROL UNIT EP104
• Interlock
Two EP104 units can communicate with each other, sending interlock and start signals between each other. Each of the
doors must first be commissioned and tested locally in accordance with the "Commissioning" section. The text below refers
to the local door and the remote door. The local door is the door currently being configured, and the remote door is the door
connected to the local port via the communication cable.
Communication
To pass signals and values from one EP104 to another configure C695. If C695 = 0, communication is disabled. The
automatic control unit with C695=1 immediately starts transmitting values to the automatic control unit with C695=2,
which responds by returning the values. If communication fails, the error message E614 appears in the display. This error
message means that the automatic control unit with C695=2 is not responding to the transmitted messages. The error
message appears for as long as the transmitting automatic control unit does not receive a response. Possible causes: only one
of the automatic control units is configured for communication; C695 is set to the same value in both units; or one of the
units is switched off. To acknowledge the error message, press any programming button. Always start by setting C695=2 in
one of the units, then start communication by setting C695=1 in the other unit.
Blocking the other door (C664)
This channel is used to block the remote door as specified in the channel reference. The setting 0 means that there is no
block, while the value 1 means the opening movement is blocked until the other door is closed. See the channel reference
for more configuration options.
Opening memory, cancel block with stop (C665)
If the interlock and blocking functions are used between two doors, they are operated using a programmable input.
Opening memory means that the remote door remembers the open signal that was sent, even though it must stay closed
until the local door has reached the open position – the function can be configured in channel C665. With the setting 0,
the automatic control unit does not remember the open signal, and a stop signal does not cancel a block. If you set the value
to 1 the automatic control unit will remember the open signal without the stop signal cancelling a block. See the channel
reference for more configuration options. A block is cancelled by interrupting the stop circuit for at least five seconds – after
five seconds the block is cancelled.
Example applications
Examples of a few systems are described below. Each new example is highlighted in bold.
Opening two doors simultaneously:
To open two adjacent doors at the same time, activate a programmable input, e.g. INP1 for interlock opening. If P160 = 1
and P190 = 1, the function opens the local door and passes the command to the remote door. If C664 is set to 0, the signal
is sent directly to the remote door. If it is set to 1, the signal is not passed on until after the local door has opened and then
closed.
Preventing draughts in spaces with two doors, thermal airlock
If there is a problem with draughts, doors can be blocked so that only one can be opened at a time. The door will not open
before the other linked door is closed. The software remembers the most recent opening operation, so the door will be
opened once the other door closes, even if it is currently blocked from opening because the other door is opening or is open.
The memory function can be disabled in channel C655. When only one door can be opened at a time, it is a good idea to
use some form of visual indication. Output cards for indication are available as add-in cards.
Setting for the above example programmable input INP1:
•
Door 1, C664 = 1.
•
Door 2, C664 = 1.
•
P160 = 1.
•
P190 = 1.
•
C500/C501 = suitable automatic closing time.
Directional thermal airlock
A thermal airlock can also be directional – in other words the interlock works from one direction but not the other.
Example: When door 1 is operated using the programmable input, door 1 opens and then closes using the automatic closing
time, then door 2 opens automatically and closes using the automatic closing time. When approached from the other
direction, however, doors 1 and 2 open at the same time.
Setting for the above example with programmable input INP1:
•
Door 1, C664 = 0
•
P190 = 1
•
Door 2, C664 = 1.
•
P190 = 1.
•
P196 = 1.
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