F21050305 - IBC Control VariMax50 NG - Thermal Wheel Rotary Control Unit

• The VariMax50 is part of a range of control units adapted for optimum control of rotating heat exchangers, with the necessary additional functions.

The range consists of three sizes: VariMax25, VariMax50 and VariMax100. All control units run a 3-phase stepper motor. All control units have an input signal of 0-10 V.

• VariMax50 is designed for wheels up to 2500 mm with a wheel speed of max. 12 rpm. If the wheel requires a faster wheel speed, the rotor diameter should be reduced.

• VariMax50 has built-in shift of the input signal, which means that the wheel's efficiency is proportional to the input signal.

• VariMax50 has a preset threshold value of 0,1 V (hysteresis 0,13–0,07 V). If the input signal falls below this value, the wheel stops.

• VariMax50 has a rotation monitor (magnet mounted on the wheel with associated magnetic sensor) and built-in cleaning function. The functions can be disconnected via DIP switches.
• VariMax50 starts automatically after voltage drop-out, and resets all alarms on restart.

• The VariMax-motor50 is a stepper motor with substantial moment over the entire speed range.

• When the motor is stationary, holding moment is activated, which means that the wheel always remains still. The holding moment disappears if the voltage to the control unit is lost.

• The motor is mounted with a 3 m cable as standard.

• If total cable length exceeds 3 m, external EMC filters should be used.