Bender COMTRAXX CP305 Manual page 22

Connection
Legend for the connection diagram
No. Terminal
1 K...COM
K...NC
K...NO
2 IN1...12
GND...
3 ETH
4 R
5 A1+/A2-
6 DC 24 V
7 BMS A
BMS B
** Devices without BMS bus connection, but with test input (e.g ISOMETER
22 CP305_D00425_02_M_XXEN/07.2023
Explanation
2 relay outputs
Parametrisable contacts for device errors, test of assigned devices**, device failure and
common alarm message.
Digital inputs
The digital inputs are divided into three groups of four, which are galvanically separated
from each other and from the device. Each group has its own GND terminal for the
reference potential.
If the inputs are controlled via an external voltage, the common reference potential is
connected to the "GND" terminal and the signal is connected to the respective input
IN1...12.
Ethernet interface for connection of a PC
The CP305 can be integrated into the Bender/hospital network via the Ethernet
interface. Parameters can be set on the PC, and data as well as the history memory can
be read out. Connected measuring devices can be displayed with their channels.
Terminating resistor of BMS bus
If two or more devices are connected to each other via the
BMS bus, the bus line must be terminated at both ends with a
resistor (R = 120 ) (can be switched on via dip switch on the
underside of the CP305).
Supply voltage
Adhere to the permissible cable lengths and cross sections when supplying the CP305
in the MEDICS ® modules.
power supply unit in the MEDICS
CP305 devices.
BMS bus connection (see also D00276)
Cable: Shielded, one end of shield connected to PE
Recommended CAT6/CAT7 min. AWG23
Alternatively Cable, twisted pairs, J-Y(St)Y min. 2x0.8
Connect shield to PE on one side
Various Bender devices with a BMS bus interface. Examples: ATICS, ISOMED427P,
EDS151, RCMS..., CP9xx, ...
® module, sufficient for supplying power to up to two
® )
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