Modulating Controls Valves and Motors

DMA - Actuator

Description The DUNGS DMA actuator drives CCW from 0° to 90° via a 4-20 mA input signal. The DMA is available in three different fixed speeds: 6, 12, and 30 seconds. The DMA has one independent, field adjustable auxiliary SPDT switch and two field adjustable limit switches. 4-20 mA feedback can be used to drive a slave motor (3 actuators maximum) in parallel. Maximum stroke (Y Max; span) is adjustable from 25Ý to 90Ý, and maximum stroke (Y min; zero) is adjustable from 0Ý to 75% of set span.

Application When mounted on the DUNGS DMK butterfly control valve, the DMA is used to automatically modulate the amount of natural gas, butane, propane and/or air supplied to the burner.

Specifications
  • ELECTRICAL RATINGS: 110-120 VAC 50-60 Hz
  • POWER RATINGS: Holding: max. 2.0 VA; Operation: max. 5.4 VA
  • ENCLOSURE RATING: NEMA Type 1 (NEMA Type 4 with optional cover D240456)
  • ELECTRICAL CONNECTION: Screw terminals with 1/2" conduit connections


    • DMA
    Bulletin
    Installation Guide

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