1. BI-WEEKLY REPORT
- - Ebbin Daniel
NOV 1 - NOV 11
Electrical Engineer

2. CONTENTS:
1. Maintenance and troubleshooting
a. Prox replacement on the pallet collector.
b. Rewiring the Cuber UP/ down control wires.
c. Adding new junction cables and rewiring the dry side of the Block plant.
d. Installed and replaced the safety latches on the dry side.
e. Troubleshooting the safety feedback relay system.
f. Troubleshooting the scissor table with pressure and sensor adjustment.
g. Troubleshooting and rewiring the sensor cables on the pallet transfer
cart.
2. Future Projects
a. Installing indicator lights for each Estop operation.
b. Engineering a mechanism for the operation of the vibrators on the mud
hoppers.
c. Mechanism to check the status of the main motors with data logging.
d. Height adjustment for pavers on wet side.
e. Installing cable ladder and cable tray system on the paver plant.

3. A.Prox replacement on the pallet collector.
Cause of the Problem:
 The Laser enabled sensors giving faulty reading.
 Dust gets mounted on the top of the lasers getting faulty readings.
 Caused malfunction on the pallet stacking operation.
Troubleshooting:
 A non-Laser capacitive proximity sensors were used.
 They were adjusted and repositioned.
 Operations were carried out with the new adjustments.
B. Rewiring the Cuber UP/ down control wires.
Cause of the Problem:
 Exposed wires found
 Had to tighten and a wire nut the wires a few times.
 Delay in productions,
Troubleshooting:
 The appropriate 200 feet wires were ordered.
 The Cuber Control wires were rewired from the top panel to the box at the arm.
 They were adjusted in such a way that the wires are not stressed.

4. C.Adding new junction cables and rewiring the dry side of the
Block plant.
Cause of the Problem:
 Wires frequently coming out of junction boxes.
 Melted and broken junction boxes.
 Shorting of wires.
Troubleshooting:
 New Junction Boxes were installed.
 Wires were rewired.
 Tested and checked.
D. Installed and replaced the safety latches on the dry side.
Cause of the Problem:
 Safety latch not resetting.
 Causing delay in production.
Troubleshooting:
 The voltage was tested.
 The latch was replaced by a newer version.
 Safety gates were reset.
E.Troubleshooting the safety feedback relay system.
Cause of the Problem:
 Safety Area Gate 7 not able to reset
 The reset alarm still ON at the control panel.
 Resetting the switches has no effect.

5. Troubleshooting:
 Schematic diagram was used to track the wires.
 Both power incoming and outgoing to the finger car was measured.
 Power was found on the electrical control room but no power on the input side of the fingercar.
 Contactor K5.28 was manually pushed allowing the alarm to reset.
 Followed up with Joel from Aveco and would be meeting him this Wednesday to discuss about
the problem.
F. Troubleshooting the scissor table with pressure and sensor
adjustment.
Cause of the Problem:
 Scissor table going down instead of holding up.
 Missing pallet counts.
Troubleshooting:
 Sensors 98.2 , 98.3 and 98.4 were tightened and adjusted.
 The pressure for the valve was adjusted and tightened.
G. Troubleshooting and rewiring the sensor cables on the
pallet transfer cart.
Cause of the Problem:
 Pallet cart stopping without reaching the end
 Forward and reverse behavior at the end.
Troubleshooting:
 Safety transmitter and receivers were readjusted.
 The sensor at the end was not turning ON.
 The problem was the wire which connected it.
 It was rewired and adjusted.