Cryomagnetics Model 4G Operating Instruction Manual 15
Magnet Quench
The 4G has magnet quench detection built in. In the event a magnet quench is detected, QUENCH
DETECTED will be displayed and the supply will switch to Standby mode, removing power from the
output. If the Quench Alarm (in the General menu) has been enabled, the unit emits a steady tone.
Pressing any key will silence the tone. In the quench state, there are two keys available: QUENCH
RESET and QUENCH DATA. QUENCH DATA will show the last few dozen current readings
leading up to the quench. QUENCH RESET clears the quench state and puts the supply into
STANDBY. If a quench is falsely detected, the power supply will display PASSIVE DISCHARGE,
and the magnet will be discharged as described in the Power Fail Mode section.
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