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A6220

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Emerson A6220 is a hot-swappable AMS 6500 monitor for low-speed shaft eccentricity and bow measurement.
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Technical specifications for A6220

  • Manufacturer:
    Emerson
  • Part Number:
    A6220
  • Product Family:
    AMS 6500 Machinery Health Monitor
  • Product Type:
    Dual-Channel Shaft Eccentricity Monitor
  • Stock:
    1
  • Channels:
    2 independent eddy-current differential inputs
  • Measurement purpose:
    Shaft eccentricity and bow below 600 rpm
  • Supported sensor families:
    PR6422, PR6423, PR6424 and PR6425
  • Input range:
    -1 to 23 VDC
  • Frequency range:
    0.017 to 70 Hz
  • Analog outputs:
    0/4 to 20 mA and 0 to 10 V
  • Buffered outputs:
    Front and rear raw-signal outputs
  • Power consumption:
    6 W maximum; 250 mA at 24 VDC
  • Operating temperature:
    0 to 65°C
  • Format:
    3U, one slot, hot-swappable
  • Dimensions:
    3.0 × 12.84 × 16.0 cm
  • Weight:
    0.32 kg
  • Tariff Code:
    9031809090
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Measurement Setup Probe Chain Fault Checks Application
  • Use the card for slow-roll eccentricity and shaft-bow measurement
  • Match each input to its documented PR642x probe and converter chain
  • Preserve protection logic and bypass status before a hot swap

Emerson A6220 is a dual-channel AMS 6500 monitor for shaft eccentricity and bow during low-speed machine operation.

It accepts supported PR642x eddy-current measuring chains and provides independent channel processing, proportional outputs, buffered signals and protection alarms in one hot-swappable rack slot.

Before replacement or commissioning, preserve probe and converter identities, cold gap, slow-roll reference, channel scale and polarity, alarm logic, relay assignments, bypass state and the saved rack configuration.

Availability, condition, price, and shipping time for A6220 are confirmed during quotation.

Emerson A6220 Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Confirm the machine is in the intended slow-roll operating range
  • Set each channel from the documented shaft reference and probe polarity
  • Retain adequate gap margin for mechanical runout and thermal movement
  • Match the exact PR642x probe and converter for each channel
  • Verify bias voltage and raw buffered signal before scaling
  • Preserve shielding and grounding from the original installation
  • Compare unstable values with turning-gear speed and target runout
  • Inspect bracket rigidity and connector condition before replacing the card
  • Verify alarms and relays only after the raw signal is credible
  • Slow-roll shaft eccentricity monitoring during turbine startup and shutdown
  • Shaft-bow verification on compressors and hydro machinery
  • Turning-gear condition monitoring in critical turbomachinery protection racks
Description

A6220 is intended for dual-channel slow-roll eccentricity and shaft-bow verification during startup, shutdown and turning-gear operation.

Selection depends on the installed PR6422, PR6423, PR6424 or PR6425 probe-converter chains, their scale and polarity, and the saved alarm and relay assignments.

Before removing the card, record raw signals, gap voltage, channel settings and every active bypass.

Alternative Names
A6220 A 6220 Emerson A6220 AMS 6500 A6220 Emerson AMS 6500 A6220
Technical notes
A6220 is intended for low-speed eccentricity or bow measurement, not normal running-speed radial vibration. Confirm the machine operating state and saved measurement mode before interpreting its value.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
When should Emerson A6220 be selected instead of a normal shaft-vibration card?
Select A6220 when the protection variable is slow-roll shaft eccentricity or bow, especially during startup, shutdown or turning-gear operation; running-speed vibration requires a different monitor.
Can Emerson A6220 use any proximity-probe system already installed on the machine?
No. Confirm a supported PR6422, PR6423, PR6424 or PR6425 probe and the matching converter, scale, polarity and calibrated chain.
What must be saved before hot-swapping Emerson A6220?
Save both channel ranges, filters, slow-roll reference, Alert and Danger settings, relay voting, output assignments, bypass state and the exact rack slot configuration.
Why can Emerson A6220 show a large eccentricity value after a probe replacement?
Check cold gap, target runout, probe angle, converter pairing, channel polarity, reference position and whether the shaft was compared at the same slow-roll condition.
Can Emerson A6220 channels monitor two unrelated shafts?
The inputs are independent, but each channel still requires its own documented probe chain, machine reference, protection logic and commissioning record; do not copy one channel blindly to the other.
What should be checked if Emerson A6220 readings fluctuate on turning gear?
Inspect probe bracket stiffness, target condition, gap, grounding, buffered signal quality, turning-gear speed stability and nearby probe interference before changing alarm settings.
How should Emerson A6220 be accepted after installation?
Compare both buffered signals and bias values with known mechanical reference data through a controlled slow-roll cycle, then verify proportional outputs, alarms, relays and removal of every maintenance bypass.

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