Specifications

RailCorp Engineering Manual — Signals — Equipment Manual

Cerberus Level Crossing Monitor Field Equipment Manual TMG E1261

Issued August 2012 UNCONTROLLED WHEN PRINTED Version 2.1

• Check cables and wiring is intact and secure.

• Check each module is physically okay and is not suffering from heat damage.

• Listen to the phone line for noise.

• Inspect a 48 hour period of the log for any anomalies

• Check the accuracy of measured Battery voltage is within limits.

• Check the 5 volt supply when measured on the 8 way Output Optoisolator test pins

is between 4.8 and 5.1 volts.

3.1.3 EPROM Replacement or Configuration Data Change

If the EPROM which contains the software is to be replaced or if new Configuration Data

is to be uploaded then a copy of the log must be taken before change is implemented.

This is because the new EPROM or Configuration Data may cause the log to be

unretrievable.

The EPROM is fitted in IC site U5 on the SCADA 2000 I/O Board. The power must be

turned off before an EPROM is removed or installed.

If the main box is marked Version 1.0:

a) Remove the top cover by undoing the screws around the edge using a Number

1 Posidrive screwdriver.

b) Location the EPROM IC site which is labelled U5. It is at the front of I/O Board,

a third of the way in from the left when looking down from the front of the main

box.

c) The ADC board may have to be removed by undoing the phillips screw and

lifting it up.

d) Remove the existing EPROM if one is fitted by using a IC extractor to grip both

ends and pulling up.

e) The new EPROM must be inserted in the correct orientation. The notch on the

EPROM socket must match the notch on the EPROM. The pins on the EPROM

may have to be flattened first if the EPROM is being inserted without an

insertion tool.

f) Align the EPROM and its pins to the socket.

g) Push the EPROM down into the socket. Taking care not to bend any pins.

h) Check the EPROM is orientated correctly and all pins are properly seated.

i) Replace the ADC board if it was removed.

j) Replace the top cover.

If the main box is later than Version 1.0:

a) Undo the I/O Board securing screws and use the ejectors at either end of the

I/O Board pull the board half way out of the main box.

b) Location the EPROM IC site which is labelled U5. It is at the front of I/O Board,

a third of the way in from the left when looking down from the front of the main

box.

c) The ADC board may have to be removed by undoing the phillips screw and

lifting it up.