Technical data
AKA 21
When mounted, AKA 21 is connected for setting of address, etc.
DANBUSS
Here there is a DANBUSS connection from one of the other units in the system.
The connections are described in a separate document bearing literature number RC0XA---
LON
Here the data communication is connected to controllers with a LONWORKS
®
- RS 485 interface (eg
EKC 201, 300, 400, 500 or AK 2 controllers). The connection is described in a separate document bear-
ing literature number RC8AC---
Number of controllers
Up to 120 controllers distributed on DANBUSS and LON can be connected. Part of the range must be
assigned to the LON bus. The remaining part is used by the DANBUSS.
RS 232 / PC / TCP/IP
U
sed for connection of a PC, a modem or a TCP/IP server. Only one of these can be connected. Which
one can be defi ned with a setting in the gateway.
Printer
A printer is connected here.
Only printers with parallel interface can be used.
The two relay outputs DO1 and DO2 and the two inputs DI1 and DI2 have in this manual been described
with the most frequently used function. If you wish to use an input or an output diff erently, it must be given
a new confi guration. For this purpose system software type AKM must be used. Cf. the AKM manual.
Relay outputs (D01, D02)
The DO1 output is used with modem connection or TCP/IP connection. Via the relay output,
supply voltage is connected to the modem or TCP/IP connection. The DO2 output can be used for
transmitting a joint alarm signal to external equip ment. (DO2 is activated for two minutes when the
alarm handler in the master gateway (address 125) receives an alarm message of status 1 from a
controller).
When you use the alarm routing function it is possible to select D02 active or inactive within specifi ed
periods of time (cf. section “AKA Alarm Table”).
Connections
AKA 245
4
Manual RS8DT102 © Danfoss 09/2004
AKA
245
