Operation Manual VISATRON® VN115/87plus EX 06/2016
Page 25
SCHALLER AUTOMATION D-66440 Blieskastel / Saarland / Germany / Industriering 14 / P.O Box 1280
Industrielle Automationstechnik GmbH & Co. KG Tel. +49(0)6842-508-0 / Fax -260 / eMail: info@schaller.de / www.schaller.de
2.2.2 Connection of monitoring devices
As required by IACS UR M10 the OMD device can be connected to Schaller's remote
monitoring device Remote Indicator II to monitor the oil mist concentration and the
OMD status from a safe location.
The connection to the monitoring device is accomplished via a RS485 two-wire bus.
In case of a Remote Indicator II the connection is only a two point link. The bus
system at the OMD device must be terminated by the resistor. It is integrated in
the terminator (see Figure 21), which is supplied with the monitoring device.
The used communication cable must be twisted pair and shielded. We recommend
LAPPKABEL UNITRONIC-FD CP (TP) plus UL-CSA, AWG20. The total bus length is
limited to 400 m. The VISATRON® device cable entry (see Figure 20) at the
VISATRON® device is designed for cable diameter between 7.5 and 10.0 mm.
Figure 20: Cable entry and bus-terminator on the bottom side of the VISATRON®
device
The connection between the OMD device and the monitoring device for standard
applications is shown in the following wiring diagram (see Figure 21)
WARNING! The shield must be connected directly at the
cable grommet.
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