UDM40LSESXR2HTX datasheet(9/11 Pages) ETC2

9 / 11 page

Specifications are subject to change without notice

UDM40DS 040706

UDM40

BO R4: dual relay output + dual open collector output: the load resistances (Rc) must be designed so that the close

contact current is lower than 100mA; the VDC voltage must be lower than or equal to 30VDC.

VDC: power supply output

Vo+: positive output (open collector transistor).

GND: ground collector (open collector transistor).

BR SX: RS485 4-wire connection: additional devices provided with RS485 port (indicated as RS1,2,3...N) are connected

in parallel. The termination of the serial port is carried out only on the last instrument of the network. The serial module is

provided with a jumper for the termination of the RS485 network as shown in the figure above.

Note: particular types of cables or plants may require an external termination. For the network connections use twisted

cable type AWG26.

RS1,2,3...N

NON terminalized network

Terminalized network

Wiring diagrams of optional modules (cont.)

Vcc

UDM40 is programmable by PC by means of the UdmSoft software (available on

request). The user can program all parameters of UDM40 that will be subse-

quently uploaded and set in the instrument by the RS485 network (BR SX).

Should UDM40 be without the RS485 serial module, all programming parameters

will be uploaded and set in the instrument by the RS232 auxiliary serial connec-

tion (1) located on the side of the measuring input module using the special con-

nection cable (2) available on request, as shown in the figures on the left. It is

also possible to program the instrument using the dot connector (1) by means of

the HyperTerminal Windows functions of a PC.

Note: the RS232 auxiliary port IS NOT insulated from the measuring inputs.

Ordering code of the cable (2): UCOM1

Programming UDM40 by means of PC

To UDM

To PC

GND

LED

BO SY: RS232 direct

connection to PC by

means of COM port.

RS232 has no termi-

nalization.

UDM40LSESXR2HTX Datenblatt(PDF) 9 Page - List of Unclassifed Manufacturers