I found the user manual for this board:
http://www.robotshop.com/media/files/pdf/user-manual-mdd10a.pdfNo schematic, but it appears to be a conventional dual-H bridge with high-low drivers for NMOS with boost circuitry for the high side. There could be a problem if you are using this as essentially an ON/OFF DC controller for the solenoids, since the gate drive for the high side MOSFETs relies on a PWM signal to generate the voltage above the positive rail. The drivers appear to be IR2104. There are two other ICs that may provide a gate drive voltage, but the markings are not readable.
Another concern is that a full bridge driver requires both ends of the solenoid coil to be "floating", and it can be driven either positive or negative (forward or reverse for a BDC motor). During the PWM off state, the energy stored in the solenoid, and generated when the magnets are moved, will be fed through the intrinsic commutating diodes of the MOSFETs into the power supply. This may cause mechanical resistance to the motion of the armature when it is turned off.
Hopefully this board will work for you. I'm just providing information in case it does not perform as expected or desired.
