Emerson Micro Motion Transmitters and Discrete Controllers Series 3000 Manuale Utente Scaricare il pdf (Pagina 7)

Series 3000 Transmitters and Discrete Controllers 7

Output signals

Non-intrinsically-safe output signals

Two active 4-20 mA outputs

Isolated to ± 50 VDC from all other outputs and earth

ground

Maximum load limit, 1000 ohms

Output is linear with process from 3,8 to 20,5 mA, per

NAMUR NE43 (June 1994)

Three discrete outputs

Configurable for the application

Power

Active or passive, software selectable

Voltage

24 VDC nominal

Current

Sourcing at 5,6 mA when V

out

= 3 VDC

Sinking up to 500 mA at 30 VDC maximum

One 2-wire frequency/pulse output

Configurable for rate control or totalization

Scalable to 10000 Hz

Output is linear with flow rate to 12500 Hz

Pulse width

50% duty cycle above 500 Hz

Configurable for frequencies below 500 Hz

Power

Active or passive, software selectable

Voltage

24 VDC nominal, active

20 VDC applied maximum, passive

Current

Sourcing 10 mA at 3 VDC, active

Sinking 500 mA, active or passive

Fault output

When a fault is detected, outputs go to configured states.

User can select high, low, last measured value, or internal

zero. Milliampere outputs conform to NAMUR NE43 (June

1994).

High output limits can be configured from 21 to 24 mA

for milliampere; 15000 Hz for frequency

Low output limits can be configured from 1 to 3,6 mA for

milliampere; 0 Hz for frequency

Last measured value is the last output for the process

variable

Internal zero drives the milliampere and frequency

outputs for process variables to zero values

Printer port

One RS-485 port (standard)

Requires external adaptor (not included) for conversion to

RS-232 signal

Send only

Power supply

AC power supply

Model 3300

85 to 265 VAC

50/60 Hz, 15 VA

0,25 A maximum at 85 VAC, 0,12 A maximum at 265 VAC

IEC 127-3/4 fuse, 0,63 A time-delay

Complies with low-voltage directive 73/23/EEC per IEC

1010-1 with Amendment 2

Installation (Overvoltage) Category II, Pollution Degree 2

Models 3350, 3500 and 3700

85 to 265 VAC

50/60 Hz, 30 VA

0,33 A maximum at 85 VAC, 0,15 A maximum at 265 VAC

IEC 127-3/4 fuse, 0,63 A time-delay

Complies with low-voltage directive 73/23/EEC per IEC

1010-1 with Amendment 2

Installation (Overvoltage) Category II, Pollution Degree 2

DC power supply

Model 3300

18 to 30 VDC

7 watts typical, 14 watts maximum

IEC 127-3/4 fuse, 1,6 A time-delay

Models 3350, 3500 and 3700

18 to 30 VDC

18 watts typical, 25 watts maximum

IEC 127-3/4 fuse, 1,6 A time-delay

Environmental limits

Ambient temperature limits

Operating –20 to 60°C

Storage –40 to 70°C

Some darkening of display might occur above 55°C

Display responsiveness decreases below –20°C

Humidity limits

5 to 95% relative humidity, non-condensing at 60°C

Vibration limits

Per IEC 68-2-6 at 1,0 g over 15 to 2000 Hz, 50 sweep

cycles

Environmental effects

EMI effects

All Series 3000 devices conform to NAMUR NE21

(June 1997)

Models 3300 and 3350

Meets EMC directive 89/336/EEC per EN 50081-2

(August 1993) and EN 50082-2 (March 1995)

Models 3500 and 3700

Meets EMC directive 89/336/EEC per EN 61326 Industrial

Ambient temperature effect

On analog outputs ± 0,005% of span per °C

1 2 3 4 5 6 7 8 9 10 11 12 ... 19 20

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