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 end of travel
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 minimum stroke
(Y min; zero) is adjustable from 0Ý to 75% of set span.
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.
110 - 120 VAC 50-60 Hz
Power rating: 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" NPT conduit connection
Operation time: 100 % duty cycle
Ambient temperature rating: -15 °F to +120 °F (-10 °C to 50 °C)
(End of Travel) Switches (ST): Two field adjustable switches: min and Max: limit stroke of actuator.
Auxiliary Switch (MV): One SPDT, field adjustable switch. 1.5 A resistive, 1.5 A FLA, 9 A LRA, 120 Vac
CCW Stroke as viewed from the bottom on increasing input signal.