BI001519
_______________________________________________________ Operation Conveyor forward 1. Start the machine in either “AUTO” or “MAN” mode (see Starting procedures in this chapter). 2. Turn the “TRAM/OFF/CONV” selector switch located on the cover of the starter enclosure to the “CONV” position. 3. Push the “START BREAKER” button to start the breaker motor. 4. Turn the “FWD/OFF/REV” selector switch located on the cover of the starter enclosure to the “FWD” position. It is important to note the following concerning the operation of the conveyor in the forward direction: –
The current of the breaker shaft motor is constantly monitored by the PLC. If the current remains below 100% of the full load current (FLA), the conveyor will continue to run at the set speed.
–
If the current increases above 125% FLA and stays at that level for three seconds, the PLC will assume there is a conveyor jam. The PLC will try to clear the jam by stopping the conveyor, running it in reverse for three seconds at 10% speed, and then running it forward for ten seconds at 25% speed.
–
If the current at this point is still above 125% FLA, the conveyor will repeat the above reverse/forward sequence for a second time.
–
If the current at this point is still above 125% FLA, the conveyor will repeat the above reverse/forward sequence for a third time.
–
If the current at this point is still above 125% FLA, the machine will shutdown and the display will read “BIG JAM”. The conveyor will need to be cleared before operation resumes.
–
If the current drops below 125% FLA at any time during the three reverse/forward sequences, the speed of the conveyor will ramp back up to the set speed.
5. Press the “START CONVEYOR” button on the front of the starter enclosure or the “START” button on either one of the remote pushbutton stations. A siren will sound warning that the conveyor is starting. The siren will sound any time the conveyor has timed out and is restarted. Notes: 1. The PLC controls the speed of the conveyor based upon the amperage monitoring of the breaker motor. There are three preset forward conveyor speeds that are, by default, 20%, 50%, and 100%. These speeds are adjustable and can be reset to suit the operating conditions.
______________________________________________________________ A6474X435 REV 2 5.25
