Ka
Control
for Door Air Curtains
INSTALLATION AND OPERATING INSTRUCTIONS
INSTALLATION AND OPERATING INSTRUCTIONS
1.96
18
Door air curtains
6
Cabling
6.1
General Information
• Lay all low voltage cables along the shortest route.
• Ensure that low voltage and high voltage cables are laid
separately, for instance using metal planking on cable trays
• Use only shielded cables as low voltage and bus cables.
• Lay all BUS cables in a linear pattern. Star-shaped wiring is not
permitted (Figure on left).
• The KaController is connected to the door air curtain by a bus line
and should be connected to the door air curtain's PCB.
Shielded, paired cables should be used as BUS cables, for
instance CAT5 (AWG23), but at least of the same value.
When laying bus cables, avoid the formation of star points,
for instance in junction boxes. Pass the cables through the
units (door air curtains)!
5. Frost Protection Function, Motor Protection
5.1 Motor Protection
Any motor fault with a door air curtain is shown on the KaController
by the display "A12". The door air curtain with the motor fault shuts
down automatically.
When a motor fault has occurred, check whether the fan is blocked.
To eliminate the fault, disconnect the door air curtain and remedy the
cause of the fault.
The door air curtain should then restart after the power supply has
been reconnected and a fan stage has been selected.
Contact a Service Technician should the motor fault continue to be
shown on the display.
A fault in the motor of a slave unit is not shown on the KaController.
Only a motor fault in a master unit is shown on the KaController!