©
09.02.2006 ELKA-Torantriebe GmbH u. Co. Betriebs KG page 8
EST 204, EST 404, EST 804
9.5. Photocell function (S5)
You may choose between two functions.
S5 off: LS is used during opening and during closing.
When obstacle is detected, the gate stops. After obstacle is gone, the gate opens.
S5 on: LS is used during closing only.
When obstacle is detected, the gate stops and opens immediately.
9.6. Timing or impulse logic (S6)
S6 on:
Controller works as impulse logic (max. 60000 pulses per opening).
Pulse cable
from motor to controller is needed.
10.
Safety functions MO 56/S
10.1. Stop
contact
When contact TS is open (LED is on) no gate movement is possible. Using TS during a gate movement
stops the gate immediately. The automatic closure is blocked when TS is being used.
10.2. Force
detection
During the learn mode the controller analyses and stores the required forces to open and close the gate. In
the operation mode the actual force is compared with the stored force value. If the actual force is higher than
the stored value plus a certain extra, the controller commands a stop and a short distance reversal (for 1s) to
free the obstacle.
10.3. Running
time
control
If the gate doesn’t reach the end position closed at the (impulse) calculated position, the motor will continue
to run for maximal 30s. The pulse counter is set to zero at the new position.
10.4.
Safety contact strips
When safety edge SLZ during closing or safety edge SLA during opening reports an obstacle (LED SL is on),
the controller performs stop and short distance reversal.
When the gate is still standing and a safety edge reports an obstacle, the gate can not move in the direction
of the appropriate edge.
Before a movement the appropriate safety edge is tested. An artificial signal is created and the evaluation
module is checked.
Note: See chapter operation in emergency mode. (chapter 11.)
10.5. Photocell
Two photocell functions are possible. They are selected with DIP 5.
10.6. Photocell
test
Prior to every gate movement a photocell test may be performed.
The test consists of two phases. During the first phase the supply of the transmitters is switched off. The
controller expects within the next 2.5 s that the receiver reports an obstacle.
During the second phase the supply of the transmitter is switched on again. The controller expects the
receiver to report no obstacle any more. Only after this procedure the gate can move.
If an error occurs in the first phase, the photocell (receiver) is damaged. The gate will not move. An error
message is given through the Diag. LED (flashes 1 time).
If an error occurs in the second phase, the controller interprets this as a real obstacle. The gate will not
move. No error message is given.
You may connect and test up to 6 pairs of photocells with the
controller MO56/S. Therefore add all n.c. relay contacts of the
receivers in serial. Parallel to each relay contact you must add a
1
k
Ω
resistor (Resistors are needed only when photocell test is
used).
The MO 56/S must learn how many photocells
are connected to it.
Activate the test by setting DIP 4 to ON and run
the learning of the running time.
After this please check every single photocell
for proper function.
S1
S2
S3
S6
E6
E3
E2
E1
1
1
3
3
3
3
1
1
1
1
1
1
2
2
4
4
4
4
2
2
2
2
2
2
MO56
LS
- 14Vac
LS-E +
LS-S + - 14Vac
