Selenium rectifier

• Rated alternated voltage: 30 V_rms

• Rated continuous voltage: 24 V_av

• Rated continuous current: 10 A_av

Group of diodes

• Direct average current: I_FAV = 12 A

• Direct non repetitive overload current:

• I_FSM = 75 A (t_p = 10 ms)

• Repetitive peak reverse voltage: U_RRM = 1000 V

• Recovery reverse time: t_rr = 65 ns max

Group of SCR

• Direct average current: I_TAV = 7.6 A max.

• True RMS value of the direct current: I_TRMS = 12 A

• Max. repetitive reverse voltage: U_RRM = 800 V

• Trigger current: I_GT = 15 mA max.

• Trigger voltage: U_GT = 1.5 V max.

• I²t = 72 A²s

Group of Triac

• True RMS value of the direct current: ITAV = 8 A max.

• Non-repetitive peak current:
  I_TSM = 70 A, 50Hz (77A, 60Hz)

• Max. repetitive reverse voltage: U_DRM = 800 V

• Trigger current: I_GT = 25 mA max. (all the quadrants)

• Trigger voltage: U_GT = 2.5 V max.

• State keeping current:

• I_H = 25 mA max.

• I²t = 24 A²s

Group of MOSFET

• Drain-source voltage: U_DS = 400 V

• Continuous drain current: I_D = 10 A

• Drain-source on-state resistance: R_DS(on) = 0.55 Ω

• Gate-source voltage: U_GS = +-20 V

Group of IGBT

• Collector?emitter voltage: U_CES = 600 V

• Continuous collector current: I_c = 24 A at T_c = 25ºC

• Collector?emitter saturation voltage:

• U_CEsat = 1.8 V_typ at I_c=15 A

• Gate?emitter voltage: U_GE = ± 20 V

Voltage Reference Generator.

• Power supply: +15 V ; 0 V ; -15 V

• Range of the continuous regulation reference signal:
  from - 10 V to + 10 V, from 0 to + 10 V

• Range of the step reference signal:
  from - 10 V to + 10 V, from 0 to + 10 V

• Switch for selecting between internal potentiometer reference signal and external reference signal

• Switch for selecting between the 0 / ±10 V range and the 0 / +10 V range.

Trigger point limiter

• Stability limit for rectifier: 0° to 180°

• Stability limit for inverter: 180° to 0°

• Power supply: +15 V / 0 V / - 15 V

Two pulse control unit.

• Power supply: +15V/ 0V / - 15V (25mA)

• Synchronization voltage: 1 to 440 V

• Control voltage Uc: 0 V to 10 V

• Trigger angle: 180° to 0°

• Number of outputs: 2 x 2

• Possibility of pulse train or single pulse.

• Possibility of selecting two natural switching points: 0° and 30°.

• Inhibit voltage:

                    U_INH = 15 V (open): trigger pulses.
                    UI_NH = 0 V: no trigger pulses

Six pulse control unit

• Power supply: +15V/0V/? 15V (300mA)

• Synchronization voltage: 1 to 440 V

• Analogue control voltage Uc: 0 to 10V

• Digital TTL control: DWH = FH...FFH (15...255)10

• Trigger angle: 180° to 0°(300°...120°/60°...240°)

• Number of outputs: 3 x 2

• Possibility of pulse train or single pulse.

• Possibility of excluding the secondary pulse.

• Possibility of selecting three natural switching points: 0°, 30° and 60°.

• Inhibit voltage:

                      U_INH = 15 V (open): trigger pulses

                      U_INH = 0 V: no trigger pulses

PWM, PFM, TPC control unit

• Power supply: +15V/0V/? 15V (600 mA)

• Control voltage: Uc: 0 to 10V

• PWM: 20?200 Hz/0.2?2 kHz/2?20 kHz

• Duty cycle D = ton/T = 0?0.95

• PFM: 5?50 ms/50?500 ms/0.5?5 s

• Frequency: 20 Hz to 20 kHz

• TPC: Hysteresis: UH = 0 to 2 V

• Number of outputs: 2 x 2, with led indication of the status

• Output amplifier: threshold voltage 5 V, short?circuit proof

Inhibit voltage:
        U_INH = 15 V (open): trigger pulses.
        UI_NH = 0 V: longer pulses at certain outputs only

Run-up control unit

• Power supply: -15 V/0 V/ 15 V

• Input signal range: Ui = -10 V ... 10 V

• Fine adjustment of the slew-rate:0.5 . . . 50 V/s

• Fine adjustment of the voltage gain:0.1 . . . 1

• Inhibit voltage:                                                                

• U_INH = 0 V: zero output voltage 

• U_INH = 15 V

• U_INH = 15 V (open): output voltage U0 runs up and output U_INH = 0 V

PID Controller

• Power supply: +15 V ; 0 V ; -15 V

• Input summing node for two different reference variables UR and
  UC and for one controlled variable UA.

• Signal voltage range: -10V .... +10V

• Parameters of the controller continuously adjustable

• Proportional gain: Kp = 0 ... 1000

• Time of the integral action: TI = 1ms ... 100s

• Time of the derivative action: TD = 0.2ms ... 20s

• Reset input of the integral controller.

• Output summing node to add or subtract noise variables.

• Measurement terminal for the error signal

• Adjustment screw for the output offset.

• Three led indicators of the sense of deviation.

• Coarse and fine adjustment of the proportional gain Kp, of the
  time of the integral action TI and of the time of the derivative action TD.

• Indicator of over-range: led "over" on when the output voltage is higher than 10 V or lower than -10 V.

• Input I_off for resetting the I controller

Absolute value generator

• Power supply: -15 V/0 V/+15 V

• Input signal range Ui: -10 V . . . + 10 V

• Adjustable gain: 0 . . . 1

• Inverting control input

• U_INV = 0 V: the input signal is inverted

• U_INV = 15 V or disconnected: the input signal is not inverted

• Inhibit voltage:

• U_INH = 0 V: the output signal is zero

•  U_INH = 15 V (open): the absolute value circuit is active

5. Gain and Offset Adjust

• Power supply: +15 V; 0 V ; -15 V

• Voltage interval of the input signal: -50 V, ..., +50 V

• Adjustable level through the setting of the gain: 0 ....1, 0.... 10, 0.... 100

• Attenuation of the pulse signals.

• Time constants: 0,1 .... 10 ms; 10.... 100 ms

• Offset voltages that can be connected: -10 V.... +10 V

• Coarse setting through rotary switches.

• Potentiometer fine setting

Mains transformers

• Power supply: three?phase from mains

• Protection through three?pole magneto?thermal switch

Capacitors

• Rated value: 2 x 1000 μF

• Rated voltage: 385 V

• Protection against polarity inversion.

• Discharge resistance: 330 kΩ (t = 330 s

Super-fast fuses.

• Nominal voltage: 660 V_ac

• Nominal current:  3 x 6.3 A  ,  3 x 10 A

Switching transformer

• Ferrite core N27 without air gap.

• Primary: 2 x 115 V, 2 x 48 turns

• Thermal protection: 2 x 0.6 A

• Secondary: 2 x 15 V/ 4.5 A, 2 x 7 turns

• Inter-winding shield.

• Rated power: 135 VA

• Rated frequency: 15 kHz

Trigger pulse switch

• Two pulse inputs.

• Two control inputs.

• Eight electrically isolated pulse outputs.

• Power supply: +15 V

Switching logic

• Input Xn for torque comparator (speed set point value).

• Input Xi for current comparator with adjustable limit threshold.

• Output SA and SB for the corresponding inputs of the

• Trigger pulse switch with led indication of the active converter.

• Output INV for the corresponding inverting input of the absolute value generator.

• Output INH for the corresponding inhibit input of the two

• pulse control unit, with adjustable delay time from 10 ms to 2 s and led indication of the commutating time.

• Current comparator output C for EXT selection input of the active elements of the adaptive PI controller.

• Power supply: +15 V/0 V/?15 V

Phase control fault simulator

• Power supply: 110 to 230 V, 47-63 Hz

• Ohmic load: 1.2 kW max

5. Isolation amplifier

• Isolation amplifier, channels A, B, C, E:              

• Frequency range: dc to 80 kHz.

• Input voltage (between 0 and U)

• Max 620 Vdc/460 Vac

• Input resistance Ri = 1 MW in all ranges

• Three?stage attenuator: MT = 1: 1; 1/10; 1/100

• Accuracy: ±2% of full scale range   Input current (between 0 and I)

• Max: 10 A continuous; 16 A for t< 15 min; 20 A for t<2 min.

• Internal resistance: 30 mw in all ranges

• Two?stage attenuator: MT = 1 V/A; 1/3 V/A

• Accuracy: ±5% of full scale range

• Five outputs: A, B, C, D, E with led for over range indication

• Output resistance RO: 100 W

Multiplexer:

• Mux channels, selectable: 1 to 8 (4 x signal; 4 x zero line)

• Gain attenuator, adjustable: 0.2 to 1.

• Y?position, adjustable: ?8 V to + 8 V.

• Trigger source, switchable to A, B, C, D, E.

• Mux frequency, adjustable: 50 kHz to 500 kHz (typical).

• Two BNC outputs for oscilloscope

Mathematical module and filter:

• Functional modes for channel D: Addition A+B; subtraction A?B; multiplication AxB/10 or AxB; reconstruction of the phase voltage LIN (A, B, C) from the line?to line voltages; channel E switched into channel D for multiplexing.

Filter

• Low pass active filter of the 2° order required for the recovery
  of the fundamental wave out of the PWM signals.

• Cut?off frequency: 1 kHz.

• Space vector indicator      

• Voltage vector: indication with 7 led.

• Magnetic flux vector: BNC outputs X e Y for oscilloscope

• Power supply.

• Single?phase from mains Frequency: 50/60 Hz

Support with 3 shunts 1 ohm.

• Resistance: 1 Ω

• Accuracy: ± 1%

• Max. current: 2.5A

Support with 3 shunts 0.1 ohm

• Technical features:

• Resistance: 0.1 Ω

• Accuracy: ± 1%

• Max. current: 8 A

Frequency converter

• Output voltage: 3 x 0...230 V

• Output current: 3 x 8 A max.

• Supply voltages:

• Power circuit, 1 x 255 V max, 50/60 Hz control circuit,

• Single?phase from mains

PWM Control Unit

• Control unit used in conjunction with the frequency converter to build a voltage?source inverter which operates with PWM control.

• All of the control, monitoring and measuring functions
  are integrated into the control unit (a microcontroller implements the management via a program stored in
  EPROM) while the frequency converter contains solely
  the power components.

• A PWM modulator controls the power transistors of the inverter and thus generates a sine?shaped motor current.

• Modulation possibilities: PWM, VVC, trapezium shaped and