Commissioning Hardware PolyGard
®
DGC- 05
Page 3
PolyGard
is
a
registered
trademark
of
MSR
GAINBDGC05_E_1206
Phone.:
0049(0)8531/9004-0
Fax:
0049(0)8531/9004-54
Specification subject to change without notice.
MSR-Electronic GmbH, Würdinger Str. 27, D 94060 Pocking
www.msr-electronic.de
Made in Germany
PolyGard
®
Gas Controller System DGC- 05
1 Preliminary
remark
These instructions explain the basics of dimensioning, laying and terminating of the cables as well as the
procedure of commissioning of the Gas Controller system DGC- 05.
These data were compiled by us with great care, but deviations are possible. Therefore we shall not be liable for
possible mistakes in this description.
At commissioning the technical requirements and regulations concerning wiring, electrical security,
environmental
conditions, fire protection etc. must be considered on site.
2 Introduction
For simple and fast installation of the field bus cable, the DGC- 05 system is solely geared to the Twisted Pair
Cable JY(St)Y 2x2x0,8LG concerning communication, operating voltage supply, connecting etc.. For this cable
you have to consider the following when dimensioning and installing:
Bus
installation
Physical load capacity.
3 Installation of field bus cable
The installation of the field bus cable to the bus transmitters DT- 05 has to be executed only in line topology.
Branch lines are not allowed. For reliable communication the cable length shall not exceed 900 m per network
segment. The cable length is also limited essentially by the physical load capacity. Section 3.4 gives examples for
the cable lengths in dependence of the connected DT- 05, they must be adhered to in any case. Max. 24 DT- 05
may be connected per bus segment.
RIGHT
WRONG
Fig. 1 Structure line topology
DT
05
DT
05
DT
05
DT
05
DT
05
R
DGC-05
central control
R
R
R
GC-05
= Terminating resistor
DT
05
DT
05
DT
05
DT
05
DT
05
R
DGC-05
central control
R
R
R
GC-05
= Terminating resistor
