American Magnetics 4Q12125PS-430 High Stability Integrated Power Supply System - Manual (Page 6)

vi Rev. 5
Table of Contents
4.4 Ethernet Configuration .....................................................................106
4.4.1 Ethernet Connector................................................................107
4.4.2 Termination Characters ........................................................107
4.5 Command Reference ..........................................................................108
4.5.1 System-Related Commands...................................................108
4.5.2 Status System Commands.....................................................109
4.5.3 SETUP Configuration Commands and Queries...................110
4.5.4 Protection Commands and Queries.......................................115
4.5.5 Ramp Configuration Commands and Queries......................120
4.5.6 Ramping State Commands and Queries...............................124
4.5.7 Switch Heater Command and Query ....................................125
4.5.8 Quench State Commands and Queries .................................126
4.5.9 Rampdown State Queries ......................................................126
4.5.10 Trigger Functions...................................................................128
4.6 Error Messages ..................................................................................130
4.6.1 Command Errors....................................................................130
4.6.2 Query Errors ..........................................................................131
4.6.3 Execution Errors ....................................................................132
4.6.4 Device Errors..........................................................................132
Service ..............................................................................................135
5.1 System Component Maintenance .....................................................135
5.1.1 Model 430 Programmer Routine Maintenance.....................135
5.1.2 Model 4Q12125PS Power Supply Routine Maintenance .....135
5.2 Troubleshooting Hints .......................................................................135
5.2.1 Electrostatic Discharge Precautions .....................................135
5.2.2 The Model 430 does not appear to be energized...................136
5.2.3 FAILURE TO LOAD message displayed after power-up ....137
5.2.4 Power supply unstable - magnet voltage oscillates..............138
5.2.5 The power supply system will not charge the magnet.........138
5.2.6 Cannot charge the magnet at the selected ramp rate..........139
5.2.7 Cannot discharge the magnet at the selected ramp rate.....139
5.2.8 Cannot charge the magnet to desired field...........................139
5.2.9 Current in only one direction from 4-quadrant supply........139
5.2.10 Cannot place the magnet in persistent mode. ......................139
5.2.11 Cannot bring the magnet out of persistent mode.................140
5.2.12 The magnet quenches for no apparent reason......................140
5.2.13 Cannot lower the magnet field ..............................................140
5.2.14 There is excessive LHe boil-off during operation. ................141
5.2.15 Cannot display the magnetic field strength, only current...141
5.2.16 Cannot use remote communications commands. .................142
5.2.17 Magnet current drifts unacceptably while PSwitch cooling 142
5.2.18 Model 430 appears to lock up when connecting to network 142