Rev. 1.2 of 12.2020
22
3.8.2
MKL N-781/A
The N-781/A Line Control Module makes it possible to detect open and short circuits in
the fire safety system actuators power circuits for supplying and controlling 230 V AC
voltage, such as:
•
fire ventilation dampers
•
smoke dampers
•
smoke exhaust windows
•
doors
The MKL N-781/A module makes it possible to monitor the transmission circuit for
a group of devices, provided that maximum power consumption of these devices does not
exceed the maximum load current of the contact.
Connecting the Module:
Installation:
on a DIN rail
The module is powered by 230 V AC.
Supply voltage for the actuator is applied to the “input”.
The actuator is connected to the “output”.
Once connected to the mains, the green D3 LED lights.
The module “teaching” procedure starts from the moment of applying 230
V power
supply to one of the inputs (L1 or L2). The actuator needs to position itself in an outermost
position; wait for 5 seconds and push the S1 button and hold it for about 3 seconds. The
green LED will start flashing; once the “teaching” procedure is over it will be ligh
ting
continuously.
Then apply power supply to the second output and wait for the actuator to be positioned
in the opposite outermost position. Wait for 5 seconds and push the S1 button and hold it
for about 3 seconds
–
the yellow LED will start flashing; o
nce the “teaching” procedure is
over it will be lighting continuously. The module is ready to work.
After any short or open circuit has been detected in the actuator power circuit, the
module communicates this fact by means of the red D1 LED flashing.
Summary of Contents for ZUP
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Page 43: ...Rev 1 2 of 12 2020 43 Annexes 14 13 ZUP Assembly and On site Launch Instruction Manual ...
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