662RX 6 and 20 Nm actuator

Types 662R2127 (6 Nm) and 662R2111 (20 Nm) are electric LAMTEC actuators that move dampers and valves in firing plants. They are TÜV-approved for operation with ETAMATIC, FMS and VMS and also suit other combustion and industrial applications. The standard version runs on 230 V AC / 50 Hz, uses three-point step control and turns through 90° in 60 seconds. When ordering, 115 V AC or 230 V AC supply at 50 or 60 Hz, running times of 30 or 40 seconds and angular displacements of 120°, 135°, 180° or 270° can be selected.

In the three-point step version, position is reported by a TÜV-approved 5 kΩ conductive-plastic potentiometer from NOVOTEC or CONTELEC, coupled positively and without backlash; a wire-wound 100 Ω, 200 Ω or 1 kΩ potentiometer can be chosen instead. This version is supplied only with an electric manual override operated by an OPEN/CLOSE push button. With a 60-second running time, the actuators satisfy the safety requirements for tested potentiometers coupled in this way; the running time can change with the limit switches and potentiometers fitted.

Optional integrated electronic control drives the actuator with a 4…20 mA signal; this version reports its position as 4…20 mA and is supplied without manual override. With ETAMATIC, FMS or VMS, this feedback does not count as a fail-safe position indication, so an additional TÜV-approved 5 kΩ conductive-plastic potentiometer is mandatory. The aluminium housing with metal cover provides IP65 protection; the ambient temperature range is -10…+60 °C, extending down to -30 °C with the optional 15 W housing heater with thermostat. For the 662R2111, a coupling or lever has to be ordered separately.