Emerson Series 3000 MVD User Manual

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Two discrete, momentary inputs

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Pulse width: 0.15 sec minimum

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Voltage: 0–0.8 VDC low state, 3–30 VDC high state, dry contacts

Two active 4–20 mA outputs

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Isolated to ±50 VDC from all other outputs and earth ground

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Maximum load limit: 1000

Ω

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Output is linear with process from 3.8 to 20.5 mA, per NAMUR NE43 (June 1994)

Three discrete outputs

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Configurable for the application

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Polarity: Active high or active low, software selectable

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Power: Internal pull-up to 24 V

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Voltage: 24 VDC nominal

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Current: Sourcing at 5.6 mA when V

out

 = 3 VCD, sinking up to 500 mA at 30 VDC maximum

One 2-wire frequency/pulse output

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Output is linear with flow rate to 12,500 Hz

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Configurable unit of measure

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Scalable to 10000 Hz

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Pulse width: 50% duty cycle above 500 Hz, configurable for frequencies below 500 Hz

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Power: Active or passive, software selectable

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Polarity: Active high or active low, software selectable

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Voltage: 24 VDC nominal, active; 30 VDC applied maximum, passive

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Current: Sourcing, 10 mA at 3 VDC, active; sinking, 500 mA, active or passive

When a fault is detected, outputs go to configured states. User can select high, low, last measured 
value, or internal zero. Milliamp outputs conform to NAMUR NE43 (June 1994).

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High output limits can be configured from 21 to 24 mA for milliamp; 15,000 Hz for frequency

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Low output limits can be configured from 1 to 3.6 mA for milliamp; 0 Hz for frequency

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Last measured value is the last output for the process variable

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Internal zero drives the milliamp and frequency outputs for process variables to zero values