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Magnet Power Supplies

Superconducting Magnet Controller: SMC120-10

0 to 120 A; ± 10 V
± 120 A, ± 10 V (with optional reversing switch)

ICEoxford’s range of Superconducting Magnet Controllers include the following features:

• Modular design, allowing master-slave operation for higher current models;
• An integral electronic polarity reversing switch option can be fitted;
• Independently fail safe protected, air cooled and has an internal high stability shunt for greater accuracy;
• IEEE-488 and optically isolated RS232 operation with short-form codes for ease of automatic computer operation and confirmation of the operational status shown by a backlit liquid crystal display on the front panel;
• Adjustable output for persistent switch heater;
• Input for accessory or safety trip signal;
• Fully configurable from the front panel or using the remote interface.

Physical and Electrical Specifications
Physical

• 483 mm wide x 223 mm high x 450 mm deep (19" x 5U case)
• Front handles add extra 50mm to overall depth.
• Support tray required for 19" rack mounting.
• Bench mounting feet add another 15mm to the height.
• Weight per module 30 kg.

Mounting: bench or rack mounting. Allow 150mm behind the SMC for cables and free access to both sides for cooling air.
Front Panel

• Display: 4 row x 20 character alphanumeric backlit liquid crystal display. Display gives full details of the current status of the controller.
• Switches: 12 momentary make switches for control of all functions and setting of parameters with direct front panel numeric input.

Mains switch: Illuminated rocker type.
Back Panel

• Mains input Filtered IEC CEE22 connector.
• Current output M12 studs, with supplied nuts.
• DVM output Differential via two 4mm sockets. 300 W source resistance nominal. 2 mV/A output, calibrated to 0.03%, stable to 10 ppm/°C or better.
• Interface Optically isolated RS232 interface with standard DB9-F connector.
• Isolated IEEE-488 interface.
• Persistent switch heater output: Constant current source, 0 - 255 mA, compliance voltage 18 V, galvanically isolated from main current supply.
• External trip: Active on externally supplied signal for system protection.

Reversing switch (optional): Input/output signals for control of reversing switches.
Electrical Specifications

Values quoted at room temperature after 20 minutes warm up.

• Output current: 0 to rated maximum.
• Setting resolution: Can be set to 1 part in 216 maximum; resolution limit of 0.001A via front panel.
• Accuracy: 0.015% of rated output.
• Stability: 15 ppm/°C or better.
• Readout resolution: 0.05 A on front panel display; 0.001 A via interface.

Voltage limit Setting: 0 to rated voltage output, in 0.1 V steps.
Accuracy: 2 % of rated output.
Digital Ramp Generator

• Setting range 10 { 100,000 s, 0 to full output.
• Setting resolution 65 values, spread logarithmically over 4 orders of magnitude.

Accuracy 0.1% of set rate.
Environmental

• Ambient temperature 10 - 40°C; SMC will suspend ramp if the output stage temperature exceeds 90°C.
• Mains input is protected by a thermal overload switch.
• Humidity: 85% maximum non-condensing.
• Stray field: 0.001 T (10 Gauss) maximum at the SMC.

Superconducting Magnet Controller: SMC120-10

Superconducting Magnet Controller

More information:
sales@iceoxford.com

Model	Description	Code	Qty	Quote
SMC 120-10	Superconducting Magnet Controller	ICEips01