
© Brüel & Kjær Vibro
● C106834.002 / V06 ●
Page 63 of 110
Technical alterations reserved!
Brüel & Kjær Vibro
│
Instruction VC-1800 Series
Extension Modules for VIBROCONTROL
1850/1860/70
EN
UNRESTRICTED DOCUMENT
8.2.4
Functionality
VIBROCONTROL 1803/1804 connects multiple vibration monitors to Ethernet and offers
communication protocols including Modbus TCP (port 1 only) and OPC UA for HMI devices.
The screw terminals on the side are numbered from #1 to #24:
Terminal
#
Function
1
Digital input
2
GND
3
Relay A
4
Relay B
5
NC
6
NC
7
NC
8
NC
9
NC
10
NC
11
NC
12
NC
13
Port 1 GND
14
Port 1 - RS-485; A
+
15
Port 1 - RS-485; B
-
16
Port 1 GND
17
Port 2GND
18
Port 2 - RS-485; A
+
19
Port 2 - RS-485; B
-
20
Port 2 GND
21
GND
22
GND
23
+ 24 VDC
24
+ 24 VDC
As described later in this manual, a VIBROCONTROL 1803/1804 has two serial ports: Port 1
(communication terminals #14 and #15) and port 2 (communication terminals #18 and #19). Only
port 1 is used for RS-485 communication with vibration monitors!
Screw terminals #21 to #24 are used to connect the VIBROCONTROL 1803/1804 to the +24 V DC
power supply. There are two +24 VDC connections (terminals #21 to #24).
We recommend using a connection as the main power supply for the nearest active module on the
DIN-rail, then the second connection in the daisy-chain connection for additional modules on the
DIN-rail that are not yet supplied with power.