Controller - Danfoss AK-CC 750A User Manual

Controller

Function
There are several controllers in the series. The function is deter-
mined by the programmed software, but outwardly the control-
lers are identical – they all have the same connection possibilities:
11 analog inputs for sensors, pressure transmitters, voltage signals
and contact signals.
8 digital outputs, with 4 Solid state outputs and 4 relay outputs
Supply voltage
24 V a.c. or d.c. to be connected to the controller.
The 24 V must not be retransmitted and used by other control-
lers as it is not galvanically separated from inputs and outputs. In
other words, you must use a transformer for each controller. Class
II is required. The terminals must not be earthed.
The supply voltage to any extension modules is transmitted via
the plug on the right-hand side.
The size of the transformer is determined by the power require-
ment of the total number of modules.
The supply voltage to a pressure transmitter can be taken either
from the 5 V output or from the 12 V output depending on trans-
mitter type.
Data communication
If the controller is to be included in a system, communica-
tion must take place via the LON connection.
The installation has to be made as mentioned in the sepa-
rate instructions for LON communication.
Address setting
When the controller is connected to a gateway type AKA 245,
the controller's address must be set between 1 and 119. (1-200 at
AK-SM..).
Service PIN
When the controller is connected to the data communication ca-
ble the gateway must have knowledge of the new controller. This
is obtained by pushing the key PIN. The LED "Status" will flash fast
when the gateway sends an acceptance message.
Operation
The configuration operation of the controller must take place from
the software programme "Service Tool". The program must be
installed on a PC, and the PC must be connected to the controller
via the network plug on the front of the unit.
Light-emitting diodes
There are two rows with LED's. They mean:
Left row:
• Voltage supply to the controller
• Communication active with the bottom PC board (red = error)
• Status of outputs DO1 to DO8
Right row:
• Software status (slow flash = OK)
• Communication with Service Tool
• Communication on LON
• Communication with AK-CM 102
• Alarm when LED flashes
- 1 LED that is not used
• Communication with display on RJ11 plug
• "Service Pin" switch has been activated
12 RS8HP102 © Danfoss 2018-09
Address
■ Power
■ Comm
■ DO1 ■ Status
■ DO2 ■ Service Tool
■ DO3 ■ LON
■ DO4 ■ I/O Extension
■ DO5 ■ Alarm
■ DO6
■ DO7 ■ Display
■ DO8 ■ Service Pin
PIN
Keep the safety
distance!
Low and high
voltage must not
be connected to
the same output
group
Slow flash = OK
Quick flash = answer from gateway
Installation in network
Constantly ON = error
Constantly OFF = error
Flash = active alarm/not cancelled
Constant ON = Active alarm/cancelled
AK-CC 750A