User manual

TECHNICAL SPECIFICATIONS : MODEL ENCORE 1500
Typical specs at 25 degrees C, supply voltage = 150V DC, load = 0.25 mH + 2 ohms.
SUPPLY VOLTAGE
Minimum supply voltage : 24 V DC
Typical operating supply voltage : 150 V DC
Maximum operating supply voltage : 155V DC
Typical Aux. Supply for cooling fan : 220V AC 50Hz 0.2 Amps
OUTPUT POWER
Peak power output @ 15A, 150V ( 2 sec unipolar / 4 sec bipolar) : 2250 W
Continuous power output @ 7.5A, 150V : 1125 W
OUTPUT CURRENT
Peak output current @ Vout = +/-150V ( 2 sec unipolar / 4 sec bipolar) : +/-15A
Continuous current @ 50 degrees C ambient : +/-7.5A
OUTPUT VOLTAGE Vout = Vsupply – 0.12 * Iout
LOAD INDUCTANCE
Switch selectable in three ranges, 0.13 to 20 mH @ 75V, 0.25 to 40 mH @ 150V
SMALL SIGNAL BANDWIDTH -3dB @ 3KHz
SWITCHING FREQUENCY
22 KHz
INPUT CHARACTERISTICS
Reference input Differential, 90 K ohm min. between inputs
Max. input voltage +/-10 volts
Tachometer Single ended, 21 K ohms
Max. tachometer input +/-30 volts
Input amplifier drift 0.05% per degree C
OVERCURRENT TIME LIMITS
The continuous current limit trimpot setting will affect the time limit at peak output
currents as follows :
Continuous current setting 7.5A 5A 2.5A
Time limit, Unidirectional change 2 1.5 1 sec
Time limit, Bidirectional change 4 3 2 sec
GAINS
Input differential amplifier 1.0
Servo preamplifier Adjustable
Power amplifier stage 2 A/V
Current monitor 5.0 A/V