© Siemens 2022 Monitoring and control devices SIMOCODE 3UF motor management and control devices SIMOCODE pro 3UF7 motor management and control devices General data Dry-running protection of centrifugal pumps with SIMOCODE pro in hazardous areas With special versions of the current/voltage measuring modules, SIMOCODE pro enables dry-running protection of centrifugal pumps through active power monitoring and motor switch-off. This applies to centrifugal pumps with progressive flow characteristics, which are also suitable for pumping flammable media and are also installed in hazardous areas.
If the active power, and thus the flow rate, falls below a minimum value, the motor – and thus the centrifugal pump – is switched off. When determining the limit values to be monitored, the user is supported by a menu-guided teach-in process in the engineering software. Video:
Dry-running protection redefined with SIMOCODE pro Technical specifications 10 10/11 Siemens IC 10 · 2022 More information Technical specifications, see https://support.industry.siemens.com/cs/ww/en/ps/16337/td Manual Collection "SIMOCODE pro", see https://support.industry.siemens.com/cs/ww/en/view/109743951 Manual for SIMOCODE pro fail-safe digital modules, see https://support.industry.siemens.com/cs/ww/en/view/50564852 Application Manual for controls with IE3/IE4 motors, see https://support.industry.siemens.com/cs/ww/en/view/94770820 Configuration Manual for load feeders, see https://support.industry.siemens.com/cs/ww/en/view/39714188 General data Type 3UF7 Permissible ambient temperature • During operation °C • During storage and transport °C -25 ...
+60; 3UF721: 0 ... +60 -40 ... +80; 3UF721: -20 ... +70 Degree of protection (acc. to IEC 60529) • Measurement modules with busbar connection • Operator panel (front) and door adapter (front) with cover • Other components IP00 IP54 IP20 Shock resistance (sine pulse) g/ms 15/11 Mounting position Any Frequency Hz 50/60 5% EMC interference immunity (according to IEC 60947-1) • Conducted interference, burst acc. to IEC 61000-4-4 kV kV • Conducted interference, high frequency acc. to IEC 61000-4-6 V • Conducted interference, surge acc. to IEC 61000-4-5 kV kV • Electrostatic discharge, ESD acc. to IEC 61000-4-2 kV kV • Field-related interference acc.
to IEC 61000-4-3 V/m Corresponds to degree of severity 3 2 (power ports) 1 (signal port) 10 2 (line to ground); 3UF7320-1AB, 3UF7330-1AB: 1 (line to ground) 1 (line to line); 3UF7320-1AB, 3UF7330-1AB: 0.5 (line to line) 8 (air discharge); 3UF7020: Operator input during operation only on the front 6 (contact discharge); 3UF721: 4 (contact discharge) 10 EMC emitted interference (according to IEC 60947-1) • Conducted and radiated interference emission EN 55011/EN 55022 (CISPR 11/CISPR 22) (corresponds to degree of severity A) Protective separation (acc. to IEC 60947-1) All circuits in SIMOCODE pro are safely separated from each other according to IEC 60947-1, i.e.
they are designed with doubled creepage distances and clearances. The instructions in the test report "Protective separation" No. A0258 must be observed.