Atec SFA User Manual
Sorensen SFA Series
5–150 kW
High Slew Rate Current Source
The SFA family builds on the industry leading
Sorensen SGA series to provide a high power
current source for laser diode applications. State
of the art high power laser diodes require wellregulated current control to avoid catastrophic
damage. Under anomalous operating conditions,
excessive stored energy in the output circuit of
the power supply can result in peak stresses that
can permanently damage the device. Providing a
constant current regulation mode only, the SFA’s
low stored energy output minimizes damage
potential for sensitive devices as well as enabling
a current slew rate of up to 400 A/msec.
3U 6U
Power
Voltage Maximum Current
60 83 167 250 333 417 500
100 50 100 150 200 250 300
160 31 63 94 125 156 188
Specications (at nominal AC line and 25ºC)
Output Slew Rate (10-90% resistive load) 250A/ms (400A/ms typical) rise, 200A/ms typical fall; 160V model 87A/ms/5kW (145A/ms/5kW typical), 60A/ms, typical, fall
Control Mode Current Control Only
Front Panel Meter Accuracy Voltage ±0.5% of full-scale + 1 digit, Current ±0.5% of full-scale + 1 digit
Load Regulation (no load to full load, nominal AC input) Current 0.1% of rated output current
Line Regulation (±10% of nominal AC input) Current 0.05% of rated output current
Current Ripple 1% p-p of full-scale current
Transient Response Output current recovers to within 1% of current setpoint within 1ms for a 10 to 100% or 100% to 10% step load change
Current Overshoot Maximum 8% of full-scale for 0 to 100% change into a resistive load
Output Capacitance 60V Models <10 µF / 5 kW, 100/160V Models 3 µF / 5 kW
Stability ±0.05% of setpoint after 8–hr. warm-up at xed line, load, and temperature using remote sense
Power Factor >0.9 typical for 208/220VAC input, >0.78 typical for 380/400VAC input, >0.7 typical for 440/480VAC input
Remote Analog Control Current Setpoint Accuracy, ±0.8% of full-scale output; Overcurrent Protection, ±1% of full-scale output;
Efciency 87% typical at full load, nominal line
Remote Control/Monitor On/Off control via contact closure, 6-120 VDC or 12-240VAC, and TTL or CMOS switch, current monitor, OCP limit set,
Overvoltage Protection Fixed at approximately 110% of the rating compliance voltage. Reset requires cycling the front panel standby power switch off/on
Ethernet Control (optional) LXI compliant 10/100 Base T Ethernet remote control with web server for direct control of power supply via web browser.
Isolated Analog Control (optional) Input to Output Isolation: 500 V Compliant with max. terminal oat voltage. Recommended operation under SELV normal conditions.
Regulatory Certied to UL/CSA 61010 and IEC/EN 61010-1, CE Compliant (LVD and EMC Directives), Input power options
Input Power Conguration 3–phase, 3–wire plus ground. Not phase, rotation sensitive. Neutral not used.
Input Power Voltage Selection 208/220 VAC±10%, 47 to 63 Hz, 380/400 VAC±10%, 47 to 63 Hz, 440/480 VAC±10%, 47 to 63 Hz
Environmental
Ambient Operating Temperature 0 to 50°C
Storage Temperature -25 to 65°C
Temperature Coefcient Current Setpoint 0.03%/°C of rated current
Cooling Internal Fans. Zero clearance stacking
Humidity 0 to 90% at 40°C; 0 to 50% at 25°C, non-condensing
Altitude Full power at 5,000 feet, 10% derating of full power for every 1,000 feet above 5,000 feet
Physical
5 to 15 kW in 3U 19.00in W x 25.12in D x 5.25inH; 80 lbs., (48.3cm W x 63.8cm D x 13.3cm H; 36 kg)
20 - 30 kW in 6U 19.00in W x 25.12in Dx 10.5in x H; 160 lbs., (48.3cm W x 63.8cm D x 36.7cm H; 73 kg)
Accessories
Modications AJ: Front panel dust lter - factory installed - 3U unit only
K550212-01 / 5550568-01 3U Rack Slides (for 5kW, 10kW and 15kW models) / Front panel dust lter - eld installation kit - 3U unit only
K550213-01 / 9550589-01 6U Rack Slides (for 20kW, 25kW and 30kW models) / AC input cover - 3U unit only
5 kW 10 kW 15 kW 20 kW 25 kW 30 kW
(parallel for higher current. )
Resistive Control, 0–5kΩ = 0-100% Current; Voltage Control, 0–5 or 0–10 VDC = 0-100% Current;
Overcurrent Protection, 0–5.5 VDC = 0-110%
summary fault status
60–160 V
31–2500 A
208 400 480
858.458.0223
sales@ProgrammablePower.com
83
Notes
84
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