Powtier Controls Limited
Air Curtain Controller
Instruction Manual
Installation
Base unit
The ACC base unit is installed inside the air curtain unit. The ACC remote unit is installed in
a separate housing. Please see layout diagrams and dimensional drawing for fixing.
The distance between the base unit and the remote unit can be up to 50M maximum.
All the electrical connections are via screw terminals. There are 6 sets of connections.
The 3 phase mains supply is connected to the middle of the 1x3 way and left side of the 2x2
way connector marked "R", "Y", and "B" and the neutral is connected to a left side of the 1x3
way connector marked "N".
The heater output is connected to the right side of 1x2 and 2x2 way connector marked
"Load1", "Load2" and "Load3".
The fan output is connected to a 6 way connector marked "N Lo Md Hi".
The sensor input (air sensor) is connected to a 2 way connector marked "AIR" on the base
unit. The sensor is not polarity sensitive.
The BMS control logic (volt-free contact) is connected to a 2 way connector marked "BMS".
The input is normally closed to enable the fan and heater output. The connection is not
polarity sensitive.
The external thermal trip (volt-free contact) is connected to a 2 way connector marked "Trip".
The input is normally closed to enable the fan and heater output. The connection is not
polarity sensitive.
Remote unit
The remote unit is connected to the base unit through 1 set of 4 way connectors marked "B, A,
0V and 7V".
For multiple base units sharing a single remote unit, the 7V supply connection should be
connected to just one base unit or it can be supplied locally using a separate 5.5 to 10V
100mA dc supply.
Communication
The communication link between the base and the remote unit are designed to accommodate
multiple base units sharing a single remote unit.
If there is more than one base unit sharing the same remote unit, each base unit must have its
own unique address. There is a 4 way dual-in-line switch marked ADDR on the base unit.
This can be used to set the base unit address from 0 to 15.
The left most switch is the Least Significant Bit and the right most switch is the Most
ACCIM
Page 5
5 March 2007
Issue 1.4
