EXCEL 50 INSTALLATION INSTRUCTIONS
23
EN1B-0101
COMMUNICATION
The Excel 50 Controller has the capability to communicate
with the Excel Building Supervisor (XBS) and other
EXCEL 5000 devices via the C-Bus. The Excel 50 Controller
also has the capability to communicate with devices on a
L
ON
W
ORKS
network. A further communication option is con-
nection to a Meter-Bus. All communications options are de-
pendent upon the application module, and not all options are
available on one module (see Table 16).
A modem/ISDN terminal adapter may be connected to Flash
EPROM versions with V2.01.00 software or newer to allow
remote communication with the controller.
Table 16. Application Module Versions.
Module model Module type
XD50-E
Standalone
XD50-F
Standalone/Flash EPROM
XD50-FC
C-Bus/Flash EPROM
XD50-FCS
C-Bus/Meter-Bus/Flash EPROM
XD50-FL
L
ON
W
ORKS
B
US
/Flash EPROM
XD50-FCL
C-Bus/L
ON
W
ORKS
B
US
/Flash EPROM
XD52-FC
C-Bus/Flash EPROM (Large RAM)
XD52-FCS
C-Bus/Flash EPROM (Large Ram),
Meter-Bus
NOTE:
EPROM versions can be upgraded by direct firm-
ware download via serial port or C-Bus.
IMPORTANT
Electrostatic discharge can damage the application
module. Always disconnect the power supply when
plugging in and unplugging the application module.
C-Bus
C-BUS
LEDs
SHI
E
LD
C + C -
C-BUS TxD, YEL
POWER, GRN
C-BUS RxD, YEL
RESERVED
RESERVED
C-BUS
TERMINATION
SWITCH
00
00
06
0c
4 5 6
Fig. 43. C-Bus connection and LEDs.
Up to 30 controllers can communicate with one another and
the Excel Building Supervisor PC (XBS) via the C-Bus.
Instead of an Excel 500/600 Controller, other C-Bus-
compatible components can also be connected (Excel IRC
Multicontroller; Excel EMC; Modem Device XM 100A).
C-Bus Termination
Fig. 44. DIP Switch settings for C-bus.
The application module is equipped with a DIP switch for the
C-Bus to set the bus termination appropriate for the com-
munication speed.
Table 17. DIP Switch Settings for C-Bus Termination.
DIP Switch
setting
Communication
speed (max.)
Controller
Location
Compati-
bility
up
9.6 Kbaud
-
XD505A,
XL20XD
middle
76.8 Kbaud
middle of
bus
XD508,
XL20XD508
down
76.8 Kbaud
beginning or
end of bus
XD508,
XL20XD508
NOTE:
Modules listed in Compatibility column are used in
Excel 20/100B/500/600 Controllers.
NOTE:
The controllers with the termination need to be
switched on prior to the controllers in the middle of
the C-Bus. The C-Bus may not work if the controllers
with termination are switched off.
Cable Specification
The maximum cable length is 4,000 ft (1,200 m). There are
regional differences as to whether shielded or unshielded
cable must/can be used.
IMPORTANT
In Europe, only shielded cable is permitted while in
the US, shielded or unshielded cable can be used.
Inside the cabinet:
J-Y-(ST)Y 2 x 2 x 0.8
Outside the cabinet:
A-Y-(ST) 2 x 2 x 0.8
In principle, data transmitting cables should be shielded in
case of RFI.
