The G123-814-001 Dual PWM Amplifier is used to drive both coils of a three position 24V solenoid operated proportional valve. It is specifically intended for use in low end closed loop applications.

It allows a very low cost proportional valve to be used where normally a much more expensive servovalve would be needed. Coupling it with its companion servoamplifier, the G122-824, and a proportional valve, produces an economical closed loop solution. An amplifier input signal of ±10V is converted to proportional pulse width modulated (PWM) output currents. An input of 0 to +10V delivers a proportional 0 to 1 Amp current to coil A and a 0 to –10V input delivers a proportional 0 to 1 Amp current to coil B. A fixed deadband compensation circuit compensates for spool overlap, making the amplifier suitable for closed loop applications. Adjustable dither level and output current zero adjustment are provided.

The user friendly front panel provides trimpots for dither and zero level adjustment. A dual colour LED indicates the magnitude and polarity of the command signal and two single colour LEDs indicate the magnitude of each of the coil currents. Two unused screw terminals on the housing double as test points for the coil current. 0 to –10V indicates 0 to 100% coil current. The amplifier is housed in a compact DIN rail mounting enclosure and requires a +24V power supply.

 Manual Detalhado do Produto