Bantam R30
18Pages

R30 Bantam R30 RoHS RUGGEDIZED TRAPEZOIDAL TORQUE AMPLIFIER FOR BRUSHLESS/BRUSH MOTORS ANALOG INPUTS • ±10 Vdc current reference • Peak, continuous current & peak-time set ANALOG OUTPUTS • Current monitor • Current reference DIGITAL INPUTS • Amp Enable • Fwd/Rev Enable (limit switches) • Hi/Lo load inductance DIGITAL OUTPUTS • Amp OK • Regen control • Brake control Actual Size FEEDBACK • Digital Halls from brushless motors DIMENSIONS • 53.3 x 45.7 x 15.2 mm • 2.1 x 1.8 x 0.6 in Model The Amp Enable input interfaces to active LO signals up to 24 Vdc. Another digital input switches the current-loop gain from a high to low for load inductance compensation. Forward and Reverse Enable inputs are provided for limit switches. A digital output for Amp-OK indicates the amplifier’s status. There are two other digital outputs one of which can activate an external regenerative energy dissipator circuit and another for motor brake control. Thermal Shock Relative Humidity Vibration Altitude Shock MIL-STD specifications IEC specifications 12~55 10 20 20~90 5 10 Digital Hall feedback enables trapezoidal drive of DC brushless motors. For driving DC brush motors, these inputs are left unconnected and the motor connected between the U & V outputs. Protections include I2T current limiting for peak and continuous current as well as peak time. Short circuits between outputs or to ground and amplifier over-temperature produce latching faults. RUGGEDIZED STANDARDS CONFORMANCE Ambient Temperature Ip R30-090-10 R30 is a compact, DC powered analog current amplifier for torque control of DC brush or brushless motors. It operates as a standalone driver taking a ±10V input from an external controller. Mounting to a PC board with solderless connectors facilitates lowcost, multi-axis designs. Ic R30-055-20 DESCRIPTION Vdc Non-Operating Operating Operating Non-Operating Operating Operating Non-Operating Operating Crash Safety Operating MIL-STDIEC- -50ºC to 85ºC -40ºC to 70ºC -40ºC to 70ºC in 1 minute 95% non-condensing at 60ºC 95% non-condensing at 60ºC 5 Hz to 500 Hz, up to 3.85 grms -400 m to 12,200 m -400 m to 5,000 m 75 g peak acceleration 40 g peak acceleration 461, 704, 810, 1275, 1399 60068, 60079 DEVELOPMENT KIT A Development Kit is available that provides mounting and easy connectivity for the R30. Copley Controls, 20 Dan Road, Canton, MA 02021, USA Tel: 781-828-8090 Tech Support: E-mail: sales@copleycontrols.com, Internet: http://www.copleycontrols.com Fax: 781-828-6547 Page 1 of 18

R30 Bantam R30 RoHS GENERAL SPECIFICATIONS Test conditions: Load = Wye connected load: 2 mH + 2 Ω line-line. Ambient temperature = 25°C, +HV = HVmax MODEL R30-055-20 R30-090-10 Peak Current Peak time Continuous current Peak Output Power Continuous Output Power Output resistance 20 1 10 1045 523 0.075 10 1 5 855 427 0.075 Maximum Output Voltage Vout = HV*0.97 - Rout*Iout OUTPUT POWER Adc, ±5% Sec Adc, ±5% W W Rout (Ω) INPUT POWER HVmin to HVmax Ipeak Icont +12 to +55 20 10 +20 to +90 10 5 Vdc, Transformer-isolated Adc (1 sec) peak Adc continuous (Note 1) PWM OUTPUTS Type Commutation 3-phase...

R30 Bantam R30 RoHS MOTOR CONNECTIONS Phase U, V, W Hall U, V, W Hall power PWM outputs to 3-phase ungrounded Wye or delta wound brushless motors, or DC brush motors (U-V) Digital Hall signals, single-ended +5 Vdc ±2% @ 250 mAdc max PROTECTIONS HV Overvoltage HV Undervoltage Amplifier over temperature Short circuits I2T Current limiting +HV > HVmax, Amplifier outputs turn off until +HV < HVmax (See Input Power for HV) R30-090-10: +HV < +20 Vdc, Amplifier outputs turn off until +HV > +20 Vdc R30-055-20: +HV < +12 Vdc, Amplifier outputs turn off until +HV > +12 Vdc Heat plate > 80°C Output to...

R30 Bantam R30 RoHS CONTROL INPUTS AND OUTPUTS ENABLE INPUT The Enable input [IN1] is LO-active and pulled up to +5V by an internal 10k resistor. This provides fail-safe operation by disabling the amplifier if the Enable input is open, or a wire from the controller should break. +5V 10k /Enable 74HC2G14 J1-18 10k 1nF FWD/REV ENABLE INPUTS Two inputs are provided for limit switches. These should be LO for normal operation, and open or HI to inhibit current of positive or negative polarity. +5V /PosEnab /NegEnab 10k J1-19 J1-20 74HC2G14 10k 1nF LOAD INDUCTANCE INPUT +5V The /LowInd input...

R30 Bantam R30 RoHS MOTOR CONNECTIONS Motor connections are of two types for brushless motors: phases and Halls. For brush motors, only the armature connections are needed. The phase or armature connections carry the amplifier output currents that drive the motor to produce motion. The Hall signals are three digital signals used for commutating a brushless motor. When using a brush motor the Hall inputs should be unconnected and the motor armature connections made between the U & V phase outputs. MOTOR PHASE CONNECTIONS: BRUSHLESS U P1-1 P1-2 P1-3 P1-4 The amplifier output is a three-phase...

R30 Bantam R30 RoHS CURRENT LIMIT INPUTS Two inputs are provided for setting the peak and continuous current limits. The I-Peak and I-Cont inputs each have equivalent circuits shown below. Limits can be set either by applying a voltage (Vset) to the input or by connecting a resistor (Rset) between input and signal ground. The tables below show values for Rset and Vset that give 10~100% of the rated peak and continuous current ratings. AMPLIFIER MODELS AND RATINGS Model % Vpeak 4.80 4.32 3.84 3.36 22400 60 2.88 14400 EQUIVALENT CIRCUIT 38400 70 5 T-Peak 1 I2T 400 100 EXAMPLE I-Peak SETTING...

R30 Bantam R30 RoHS PWM LIMITING INPUT I2T LIMIT SETTINGS EXAMPLE I2T SETTING EQUIVALENT CIRCUIT % Vi2t Ri2t 100 5.0 90 4.50 90000 80 4.00 40000 70 3.50 23333 60 3.00 15000 50 2.50 10000 40 2.00 6667 30 1.50 4286 20 1.00 2500 10 0.50 1111 If a voltage Vpeak is used to control the I2T, it can be found like this: Vi2t = 5.0 * I2TSecs +5 V AmpI2TLimit Example: find Vi2t for a 6 A PeakLimitCurrent using a R30-090-20: Vpeak = 4.80 * 6 = 1.44 V 10000 J1-2 Vi2t I2T I2T Control Ri2t 20 To use a resistor for setting Peak-Limit current, calculate the value as follows: Rpeak = 9600 * PeakLimitCurrent...