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controller to close door and keep it closed. Removal of voltage will make the controller to open
the door. Therefore this control variant is NOT RECOMMENDED for SAFETY REASONS.
Even momentary drop of voltage on the {CLOSE INP.} control input will immediately start door
opening procedure and, as a result, opening of safety interlock circuitry of the elevator.
A)
2
J9
1
5
4
J8
3
2
1
Fig. 3.7. Connection of the controller while using single {CLOSE INP.} input
3.7. RELAY OUTPUTS
The SDK-500 controller is equipped with three normally-open relay outputs. Two of them
({OPEN}, {CLOSED}) indicate the door reaching the terminal positions (fully open or fully
closed). The third one ( {BARRIER} ) is used to indicate detection of an obstacle during the
door movement. It is activated both in case of the optical barrier interruption as wells as in
case of a mechanical blocking of the door movement.
Note that the relay outputs operation depends on the menu option settings. Figure 3.8
shows connection of relay outputs and inductive loads. In this case it is required to use
additional suppression circuit (typically capacitor 47nF/ min. 250VAC in series with 100R/5W
resistor), connected in parallel to relay terminals or (better) directly on the load (see figure
3.8). In consequence of using the suppression circuit, the level of generated electromagnetic
disturbances is lower, and the life of relay contacts rises.
J7
User's manual for
+15V
CLOSE INP. / OPEN INP.
5
4
3
2
OPEN
1
+
external
supply
Fig. 3.8.
Relay outputs connection of SDK-500 controller
elevator door controller
B)
2
J9
1
5
4
J8
3
2
1
CLOSED
-
SDK-500
0V
CLOSE INP. / OPEN INP.
+
external
supply
BARRIER
-
11
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