Title: +038=360.012-#####._06-BA-ESR NI-DV Controller Nicotra Gebhardt - Operating Instruction.pdf
Among other things, the function can be used in connection with smoke extraction from a burning property. When fire mode is activated, an extraction fan will continue to remove smoke from the property for as long as possible. In fire mode, NI-DV is able to maintain operation for at least an hour even when NI-DV and the fan motor are overheated (max. 70°C). In fire mode, the overheating protection built into NI-DV is disabled and the motor is not stopped if communication is lost. In fire mode, the fan is not stopped in case of faults or other alarms form either the fan or the OJDV.Speed is controlled to the actual setting, determined by an external 0-10V signal, a potentiometer or via Modbus from a Modbus master controller.Fire mode can be activated via Modbus.5.6. Built-in protectionIf the temperature inside NI-DV exceeds 95°C, NI-DV will attempt to reduce its internal heat generation by reducing motor speed (rpm).NI-DV has built-in current limitation for the protection of motor and cables