Emerson A6500-UM Universal Measurement Card

Description

The A6500-UM Universal Measurement Card is a component of the AMS 6500 ATG machinery protection system. It is equipped with two sensor input channels (independent or combined, depending on the chosen measurement mode) compatible with most common sensors, including eddy-current, piezoelectric (accelerometer or velometer), seismic (electrodynamic), LF (low-frequency bearing vibration), Hall-effect, and LVDT (in combination with A6500-LC) sensors. Additionally, the card features five digital inputs and six digital outputs.

The measured signals are transmitted through the internal RS 485 bus to the A6500-CC Com Card, where they are converted to Modbus RTU and Modbus TCP/IP protocols for further transmission to host computers or analysis systems. The Com Card also provides USB communication for configuration and visualization on a PC/laptop. The measuring results can be output through analog outputs (0/4 - 20 mA), which are electrically isolated from the system supply.

The A6500-UM operates within the A6500-SR System Rack, which supplies the necessary voltages and signals.

Functions

• Shaft Absolute Vibration
• Shaft Relative Vibration
• Shaft Eccentricity
• Case Piezoelectric Vibration
• Thrust and Rod Position, Differential and Case Expansion, Valve Position
• Speed and Key

Signal Input Specifications

Eddy Current

• Input Signal Voltage Range: -1 V to -22 V
• Frequency Range: 0 to 18750 Hz (attenuation <0.1 dB)
• Supply Voltage: -23.25 V / -26.0 V DC (short circuit proof)
• Maximum Supply Load: 35 mA
• Supply Accuracy: ±1%
• Temperature Drift: ±1% (operating temperature: -20°C to +70°C)

Piezoelectric

• Input Signal Voltage Range: +1 V to +23 V
• Frequency Range: 0 to 18750 Hz (attenuation <0.1 dB)
• Supply Constant Current: 0 to 8 mA (selectable as 2-wire or 4-wire connection)
• Supply Gain Accuracy: ±3.5%
• Supply Offset Accuracy: +100 µA / -0 µA
• Supply Voltage Reserve: +25 V
• Temperature Drift: ±50 µA (operating temperature: -20°C to +70°C)

Seismic (Electrodynamic)

• Input Signal Voltage Range: -10 V to +15 V
• Frequency Range: 0 to 2000 Hz (attenuation <0.1 dB)
• Supply Lifting Current: 0 to 8 mA (selectable as 2-wire or 4-wire connection)
• Supply Gain Accuracy: ±3.5%
• Supply Offset Accuracy: +100 µA / -0 µA
• Supply Voltage Reserve: +12 V
• Temperature Drift: ±50 µA (operating temperature: -20°C to +70°C)

LF (Low Frequency Bearing Vibration)

• Input Signal Voltage Range: -11 V to +11 V
• Frequency Range: 0 to 1000 Hz (attenuation <0.1 dB)
• Supply Voltage: ±15 V DC (short circuit proof)
• Maximum Supply Load: 35 mA
• Supply Accuracy: -5%
• Temperature Drift: ±3% (operating temperature: -20°C to +70°C)

Hall-effect / A6500-LC

• Input Signal Voltage Range: +1 V to +22 V
• Extended Input Range: 0 V to +30 V (valid for speed measurement, sensor raw signal will clip)
• Frequency Range: 0 to 18750 Hz (attenuation <0.1 dB)
• Supply Voltage: +30 V (short circuit proof)
• Maximum Supply Load: 35 mA
• Supply Accuracy: -10%
• Temperature Drift: ±3% (operating temperature: -20°C to +70°C)

Digital Input

• Number of Inputs: 5
• Logic Low Level: 0 V to 3 V (active)
• Logic High Level: 13 V to 32 V (open, not active)
• Load: <1 mA
• Rated Current: 1 mA
• Rated Power: 24 mW
• Key-Signal Frequency Range: 0 to 2000 Hz (duty cycle 20 to 80%)

Current Output

• Number of Outputs: 2
• Range: 0/4 to 20 mA
• Accuracy: ±1% of full scale
• Maximum Load: <500 Ω
• Rated Voltage: 10 V
• Rated Power: 0.2 W
• Temperature Drift: ±1% of full scale (operating temperature: -20°C to +70°C)

Digital Output

• Number of Outputs: 6 (solid state relay)
• Type: Normally open (equivalent to SPST, protected against polarity reversal)
• Voltage Capability: 19 V to 32 V DC
• Maximum Load: 100 mA
• Rated Current: 100 mA
• Rated Power: 2.4 W
• Turn-On / Turn-Off Time: <5 ms (at 20 kΩ load)

Pulse Output

• Number of Outputs: 2
• Type: Normally open (opto-decoupled collector-emitter output, protected against polarity reversal)
• Voltage Capability: 19 V to 32 V DC
• Maximum Load: 30 mA
• Frequency Range: 0 to 2000 Hz (at 50% duty cycle)

Raw Signal Output

• One Output Per Sensor Input: Nonreactive and short circuit proof
• Voltage: According to sensor signal
• Rated Current: 2 mA
• Rated Power: 60 mW
• Accuracy: ±1% of full scale (for connected devices with input impedance > 100 kΩ)
• Phase Shift: <5° (frequencies up to 2000 Hz), <15° (frequencies up to 18750 Hz)
• Temperature Drift: ±1% of full scale (operating temperature: -20°C to +70°C)
• Frequency Range: 0 to 18750 Hz (attenuation <1 dB)

Environmental and General Specifications

• Protection Class: IP20, IEC 60529
• Operating Temperature: -20°C to +70°C (-4°F to 158°F)
• Storage Temperature: -40°C to +85°C (-40°F to 185°F)
• Relative Humidity: 5 to 95%, non-condensing
• Vibration: IEC 60068-2-6 (0.15mm, 10 – 55Hz; 20m/s², 55 – 150Hz)
• Shock: 150 m/s², 4000 shocks per axis
• EMR Resistance: EN50081-1 / EN50082-2
• Power Consumption: Max. 6W
• Configuration: Password protected
• Rack Slot: 3RU/6HP
• Board Dimensions: PCB/EURO card format (DIN 41494, 100 x 160mm)
• Weight: Approx. 200g (exclusive packaging)

Compliance and Certifications

• CE EMC: EN61326-1, 2014/30/EU, 2014/34/EU, 2011/65/EU
• ATEX: EN 60079-0:2012, EN 60079-15:2010
• IEC-Ex: IEC 60079-0:2011 (Edition: 6.0), IEC 60079-15:2010 (Edition: 4)
• CSA: CAN/CSA-C22.2 NO. 0-10, CAN/CSA-C22.2 NO. 61010-1-12, CAN/CSA-C22.2 NO. 60079-0:15, CAN/CSA-C22.2 NO. 60079-15:12
• UL: UL 61010-1:12, UL 60079-0:13, UL 60079-15:13
• Marine: DNV GL rules for classification – Ships and offshore units

Hazardous Area Approvals

• Non-sparking nA in combination with nC:
  • ATEX II 3G – Ex nA nC IIC Gc (-20°C ≤ Ts ≤ 70°C)
  • IEC-Ex II 3G – Ex nA nC IIC Gc (-20°C ≤ Ts ≤ 70°C)
  • CSA Class I Division 2, Groups A, B, C, D, T4
  • Class 1, Zone 2 Ex / AEx nA nC IIC T4 Gc (ambient temperature within the end-use enclosure shall not exceed 55°C)

Ordering Information

• Model Number: A6500-UM
• Product Description: A6500-UM - Universal Measurement Card