Innotech Genesis V4 System User Manual
Page 107
Installation Instructions for Innotech Genesis Systems
Edition 011100
A-26
The following procedures should be performed in the order shown before application of power
to the system:
a.
Ensure there are no network cables connected to any device.
b.
Connect the supply conductors to all devices, ensuring that, where it is specified, the
electrical earth is connected to the device.
c.
Ensure that no conductors or screens of the network cables are in contact with any
device or any metal.
d.
Select the network device that is to be the earthing point for the network cables.
e.
Before connecting the network cable to the selected device, check if there is a voltage
difference between the test points on the cable and the device as shown in Figures A-
25 through A-27, as appropriate.
f.
If the voltages are less than the values shown in Figures A-25 through A-27, then
connect the network cable(s), including the screen to the device selected in Step d.,
above.
g.
For looping connections, test the two cables separately before connecting them.
h.
Go to the device to be connected to the other end of the section of network cable.
i.
Before connecting the network cable to this next device, check if there is a voltage
difference between the test points on the cable and the device as shown in Figures A-
25 through A-27, as appropriate.
j.
If the voltages are less than the values shown in Figures A-25 through A-27, then
connect this section to the device. If the cable is looping onto the next device, test the
next section of network cable before connecting the cables.
k.
A resistance check between the screen and a point connected to the electrical earth
can confirm the integrity of the screen at each stage of the connection process.
l.
Continue testing and connecting one section at a time, moving away from the earthing
point.
Figure A-25. Voltage Check, Isolated/Non-Isolated Digital Controller.
V
AC
V
DC
3.5
V
AC
V
DC
-5V
V
AC
V
DC
+10V
On a Digital Controller,
Measure all Voltages to
the Metal Shell of the
RS232 connector.
89 90 91 92 93
1 2
Screen
Shunt
Links
Isolated or Non-Isolated
Genesis I or Genesis II
Digital Controller
V
AC
V
DC
3.5
V
AC
V
DC
3.5
The results of this test should be
as low as possible to ensure
error free communications