Shown without internal Command Potentiometer: The model series of pulse width modulated (PWM) solenoid driver module is designed to be used for open loop motion and speed control systems. Each of the two outputs is unipolar and will drive all solenoids that have current requirements up to 5 amps. The command signal can be obtained from either a potentiometer or an external voltage source.
This industrial grade module is a true high performance current regulator. Constructed on a single circuit board, It incorporates current loop feedback to maintain the output signal to the coil within 1% of the setpoint as the load impedance, input voltage, and ambient temperature are varied over the specified operating range. Pulse width modulated switching for the output maintains low heat dissipation and high efficiency as the output current is varied from minimum to maximum. Models are available with switching frequencies from 100 to 2200 Hz. A lockout circuit prevents current from being applied to both coils at the same time.
Each pulse width modulated solenoid driver module provides for an optional internal command potentiometer. The controls are supplied to set the minimum and maximum output coil current for each solenoid. The module contains provisions for the use of an external command potentiometer or the ability to follow a two remote command voltage signals. The output current to the solenoid will vary from the minimum to the maximum as the input signal is adjusted from zero to the rated value. The module requires a positive 10 to 30 volt DC power supply for operation.
The circuit board is solder masked. All external power and solenoid connections are made to a barrier type terminal block with #6-32 captive wire clamping plates. External command signals are made to .25 inch male tabs. All external connections are clearly marked on the board. The board can be mounted in the user's control enclosure on standoffs or located in plastic mounting track.
Applications: Proportional solenoid valves, electric and magnetic particle brake and clutch assemblies, as well as small dc motors operating as torque controllers.