VariMax25 NG
(Next generation) VariMax25 NG
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Article no. F21025305 VariMax25 NG VariMax25 NG is our latest control unit for rotating heat exchangers. The control unit combines small dimensions with large capacity, and is very easy to fit and commission. VariMax25 NG is intended for rotors up to VariMax25 NG is an alternative to VariMax CE. The control unit is supplied in an enclosed format and must be combined with our
Connection diagram Function description Input signal 0-10 V Ceaning function When the rotor has stopped for 10 minutes, the cleaning function is activated and the rotor starts to rotate. As a warning, the rotor first rotates for 6 seconds at a motor speed of 5 rpm, the rotor is then stationary for 3 seconds. After this, the actual cleaning starts, for a random time, between 10 to 20 seconds with the motor at 20 rpm. Alarm Rotation monitor This is activated when the DIP switch for the “External rotation monitor” is in the OFF position. The internal rotation monitor performs measurements at different times, depending on whether the speed of the motor is above or below 37 rpm. At a motor speed above 37 rpm, the measurement begins when the speed is stable, normally starting after about 30 seconds, after which measurements are carried out continually. The yellow “Rotation” LED flashes after each completed, approved measurement. The time between the measurements varies from 22 seconds to nearly two minutes. At a motor speed below 37 rpm, the control unit will increase the speed to 37 rpm at two-hour intervals. At start-up, this measurement will start after 10 minutes. The speed will remain steady for 2 minutes, while the actual measurement is being performed. To verify the measurement, an additional measurement is conducted 10 minutes later. If both of these measurements are positive, i.e. everything is normal, the next measurement will not take place until two hours later. External faults Motor fault All alarms are remaining Manual speed |
Technical data |
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Connection voltage |
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Power input max |
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Input current max |
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External fuse max |
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Output voltage *) |
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Output current, max |
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Output frequency |
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Acceleration and retardation time |
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Ambient temperature, non condensing |
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Protection form |
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Weight |
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Dimensions, HxWxD |
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*) |
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