IBC control MicroMax750, Manual, Page: 7 / 16

• The MicroMax750 is part of a range of control units adapted, with the necessary
additional functions, for optimum control of rotating heat exchangers.
The series consists of four sizes, MicroMax, MicroMax180, MicroMax370 and
MicroMax750.
All of the control units drive three-phase induction motors with associated gearing;
the control unit designation denotes motor output.
All control units have an input signal of 0-10 V.
• MicroMax750 is designed for wheels up to 5000 mm mm with a wheel speed of max
12 rpm. If a faster wheel speed is necessary, rotor diameter should be reduced.
• Heat exchanger rpm and thus thermal efficiency are governed by the control unit so that
wheel speed is proportional to the input signal from the control centre.
• MicroMax750 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 will stop.
• MicroMax750 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.
• MicroMax750 starts automatically following voltage drop-out, and resets all alarms on
restart.
• The motor should not be disconnected from the control unit while under load.
DESCRIPTION OF FUNCTIONS
4
5