Cameron Scanner 2000 microEFM, Hardware User Manual

Page: 19 / 190

19
Scanner
®
2000 microEFM Section 1
Table 1.1—Scanner 2000 microEFM Specifications
Inputs (Expansion Board);
not applicable to
F
oundation
™ fieldbus
configurations
Analog Input (2)
• 3-wire sensor interface
• 1-5V or 4-20 mA
• Sensor power same as external power supply for main board (6 to 30
VDC)
• Accuracy: 0.1% of full scale
• Temperature effect: 0.25% of full scale over operating temperature
range of -40°C to 70°C (-40°F to 158°F)
• Resolution: 20 bits
• User-adjustable sample time and damping
Pulse Input
• Accepts a signal from turbine meter or positive displacement meter
• Optically isolated
• Input: 3 to 30 VDC or contact closure
• Cannot be used as a frequency input simultaneously with Turbine Meter
Input 2
• Can be used as a status input when Turbine Meter Input 2 is in use
Turbine Meter Input 2
• Configurable sensitivity adjustment (20, 50, 100 or 200 mV, peak-to-
peak)
• Frequency range: 0 to 3500 Hz
• Input amplitude: 20 mV to 3000 mV, peak to peak
• Cannot be used simultaneously with pulse (frequency) input
Turbine Setting Input Sensitivity
0 – 1000 Hz 1000 – 2000 Hz 2000 – 3500 Hz
Low (20mV) 20 mVpp 25 mVpp 50 mVpp
Med (50mV) 50 mVpp 70 mVpp 110 mVpp
High (100mV) 100 mVpp 150 mVpp 250 mVpp
Max (200mV) 200 mVpp 380 mVpp 620 mVpp
Output (Main Board) Digital Output
• Configurable as pulse output or alarm output
• Solid-state relay
• Output rating: 60 mA max @ 30 VDC
When configured as pulse output:
• Maximum frequency: 50 Hz
• Configurable pulse duration (65,535 msec max)
• Configurable pulse representation (1 pulse = 1 MCF)
• Based on any accumulator (flow run or turbine meter run)
When configured as alarm output:
• Low/high
• Out-of-range
• Status/diagnostic
• Latched/unlatched
• Normally open/normally closed