Service – American Magnetics 05100PS-430-601 Integrated Power Supply System User Manual

Page 159

Rev. 5

141

Service

Troubleshooting Hints

5.2.5 The power supply system will not charge the magnet.

1. Verify system interconnecting wiring. Refer to section 2.5. If the

Model 430 Programmer shows “+0.00 A ↑ Status: Ramping” with

the supply voltage, Vs, increasing or at the programmed Voltage

Limit (as indicated by the reverse video “V” status indicator), there

may be a problem with the power supply. Verify the power supply is

on and the program out connection from the Model 430

Programmer to the program voltage input to the power supply is

intact.

2. Verify the power supply is configured for remote programming,

voltage-to-voltage mode.

3. Check the system wiring and verify that the current flow direction

through the Model 601 is from the positive (+) to the negative (-)

lug.

4. Verify that the supplied external DC power converter is connected

to the rear of the Model 601, and the AC power cord is also

connected to the appropriate power receptacle.

5. Check the Voltage Limit settings of the Model 430 Power Supply

Programmer and verify the limits are set to a value greater than 5

volts plus the charging voltage and any power lead voltage drops.

5.2.6 Cannot charge the magnet at the selected ramp rate.

1. Ensure the Model 430 Programmer is properly configured for the

2. Ensure that the persistent switch heater is on and the switch

heated time has expired. Ramping is disabled during the switch

heating period.

Note

If an energy absorber is present in the system, the Model 430

Programmer must command enough power supply voltage to

overcome any forward voltage drop due to the energy absorber.

Increase the Voltage Limit to account for the energy absorber voltage

drop.

4. Check for excessive wiring resistances in the magnet-power supply

loop which may prevent proper charge/discharge voltages at the

magnet. Use the local voltmeter on the power supply to see if the

proper voltages exist across the various components in the magnet