Rev. 6
4
AMI
EXCELLENCE IN MAGNETICS AND CRYOGENICS
immediately
upon connection to a power receptacle.
WARNING
: Do not position the external power supply or the Model 601
so that it is difficult to disconnect the power cords.
The Model 601 DC power converter is designed to operate with 50/60 Hz power and
voltages of 100 to 240 VAC ± 10%.
NOTE:
If the Model 601 is operated without supplied power, the unit
will function normally at currents above 0.5 A. Below 0.5 A, the Model
601 will not develop the full discharge voltage of 5 volts if operated
without power supplied to the rear-panel DC power converter connector.
Operation without supplied power is only provided as a safety feature
for situations where all facility power is lost to the magnet system. The
Model 601 should not be routinely operated without supplied power.
IV.
OPERATION
A. During normal operation of the Model 601, no operator intervention is required.
B. The Model 601 is operating correctly if the FAULT LED is
not
energized.
C. If the FAULT LED is energized, then one or more of the internal energy absorbing
elements has malfunctioned or power has been lost to the rear-panel power connector.
An audible alarm will also sound when the FAULT LED is energized. If the unit is in
operation, proceed immediately to a safe magnet system state (typically zero current or
a cooled persistent switch in a connected magnet). Do not continue to operate the unit
and refer to the
Troubleshooting
section below for further direction.
D. Remember to adjust the voltage limit settings of any power supply programmer to
account for the additional voltage (5 V) required to operate the system with a Model
601 installed.
WARNING
: The Model 601 must have sufficient cooling air to prevent
damage from overheating. The cooling air inlets on the front panel and
the cooling air outlets on the rear panel must not be obstructed.
V.
TROUBLESHOOTING
A.
The magnet system does not appear to charge
.
1. Check the system wiring and verify that the current flow direction through the
Model 601 is from the positive (+) to the negative (
) lug.
2. Verify that the supplied external DC power converter is connected to the rear of the
