PC3000 Complete Installation guide iss 12 - Elektro-Trading

PC3000 - Installation Guide
Local Controller Module
The metal sleeve must be removed in order to gain access to the motherboard.
(1) Remove the M3 screw and shakeproof washer which retains the printed
circuit board earthing block to the sleeve, from the lower left hand side of
the metal sleeve.
(2) Loosen the two M2.5 nuts retaining the backplane end of the motherboard
to the sleeve.
FRONT
Extension Rack
Communications
Connector
PCB Earth
Block and
M3 Screw
Bottom of LCM Sleeve
PCB Locates
BELOW these
Metal Tabs
PCB Locates
ABOVE these
Metal Tabs
Earth Clip Contact
Module Guide
BACK
Backplane Connector
Printed Circuit
Board
M2.5 PCB to Sleeve
Retaining Nut
(3) Slide the motherboard out of the metal sleeve towards the back of the
sleeve.
(4) Fitment is the reversal of the process. However, care should be taken to ensure
that the motherboard is located correctly within the metal tabs inside the sleeve
before tightening any fixing.
0
E 2
C 4
A 6
8
0
E 2
C 4
A 6
8
Link 3
Link 4
Selecting the termination impedance
on port C
Links are provided to select termination
impedance for both transmit and receive
channels. The links are located behind the port C
serial connector on the motherboard. The metal
sleeve must be removed in order to carry out this
operation. The module is supplied with both
links fitted. This is intended for point-to-point
use.
Link 3 may be fitted for 100 R termination on
the receive pair.
Link 4 may be fitted for 100 R termination on
the receive pair.
In multi-drop applications care should be taken
to ensure that the receive pair is terminated at
one point only to avoid excessive loading.
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