USER MANUAL | ECL150

USER’S GUIDE for the

ECL150 / ECL150e – Eddy-Current Displacement Sensor

 

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Approvals and Safety Considerations

The ECL150 and ECL150e are compliant with the following CE directives:

  • 2006/95/EC (Low Voltage Directive)
  • 2004/108/EC (EMC) as validated using the following standards:
  • Safety: 61010-1:2001
  • EMC: 61326-1, 61326-2-3 To maintain compliance with these standards, the following operating conditions must be maintained:
  • All I/O connecting cables must be less than three meters in length
  • AC power cables must be rated at a minimum of 250 V and 5 A
  • AC power must be connected to a grounded mains outlet rated less than 20 A
  • Power supply must have CE certification and provide safety isolation from the mains according to IEC60950 or 61010.
  • Sensors must not be attached to parts operating at hazardous voltages in excess of 30 VRMS or 60 VDC
  • All external connections must be SELV (Safety Extra Low Voltage).

Use of the equipment in any other manner may impair the safety and EMI protections of the equipment.


ECL150 and ECL150e

The ECL150e is identical to the ECL150 except that resolution is limited to a best case of 0.3 µm. For this reason, the ECL150e does not require an export license. For details on export restrictions, please refer to www.lionprecision.com/exports-and-the-ear99-classification/

This manual will only refer to the ECL150, but all instructions apply to the ECL150e.


Description

The Lion Precision ECL150 Eddy-Current Displacement Sensor provides up to eight channels of high-resolution, noncontact displacement measurement of a conductive target. The system consists of driver electronics and probes calibrated for a specific material, range, and ECL150 channel. The ECL150 provides linear ±5 V outputs for each channel; more positive output voltage indicates the probe is further from the target. The calibration information is detailed on a calibration certificate which is shipped with the system.


Quick Start Instructions
  1. Connect the probes to the matching channels on the ECL150.
    1. Each channel is calibrated to a specific probe identified by a channel number marker on the probe cable. The probe serial numbers are listed on the labels on the end of the electronics enclosure.
  2. Connect the output to a monitoring device.
  3. Connect then apply power.
  4. Adjust the probe position so the Range Indicator shows green

LED Range Indicator

The Range Indicator monitors and displays the probe position within its calibrated range. The indicator is green when the probe is in the calibrated range and red when out of the calibrated range. If the Range Indicator is red, the output voltage is not a reliable measurement.

 


Analog Output Signals

Each channel’s output signal is a ±5 VDC analog voltage. The output voltage is proportional to the probe-target gap. As the probe-target gap increases, the voltage becomes more positive. See the included calibration certificate for specific information.

Interpreting the Output Voltage

Output voltage change for a given change in the probe-target gap is called sensitivity. The sensitivity of the sensor is listed on the calibration certificate.

Change in gap calculation:

Gap Change = Voltage Change / Sensitivity

For example: With a sensitivity of 1V/2 µm and a voltage change of +3 V, the probe-target gap has increased by 6 µm.


Probe Mounting

When multiple probes are mounted together, they must be separated by at least 3 probe diameters to prevent interference between the channels. The area within 3 probe diameters to the sides and 1.5 diameters behind should be kept clear of any metallic objects other than the object to be measured. Otherwise, custom calibration will be required.


Extension Cables

Sensors which are calibrated with a probe extension cable must be operated with the extension cable installed to meet specifications. Operating without the extension cable will result in inaccurate measurements.


Underground Targets

Ungrounded targets have the potential to inject noise into the sensor. If the output is unusually noisy, be sure the target is grounded. On moving/rotating targets this can be accomplished with a small metal brush or thin piece of metal which is connected to ground.


Multiple Systems

All channels within the ECL150 are synchronized and can be used on the same target. When multiple ECL150s are used with the same target, the systems must be synchronized for best performance. An interconnecting cable connects between the Sync In and Sync Out connectors. Single systems do not come with these connectors installed.


Setting Bandwidth

The system is shipped with the bandwidth setting listed on the calibration certificate based on order specifications. To change bandwidth, remove the I/O connector endplate and set switches according to the table below. Bandwidth specifications are -10%/+30%.

SW1 SW2 Bandwidth
Up Up 250 Hz
Down Up 1 kHz
Up Down 10 kHz
Down Down 15 kHz

 


Connecting to the ECL150

The ECL150 is shipped with all required connecting cables. Power and Output connecting cables are terminated with an M12 device connector at one end and color-coded wires at the other end.

Device Connector: 4-Pin, M12, Male Power Cable PN: 6203-0400
Pin Wire Color Connection
1 Brown 12 to 24 VDC Internally Connected
2 White 12 to 24 VDC
3 Blue Power Ground Internally Connected
4 Black Power Ground

 

Sync Connections

Sync connectors are only installed when multiple systems are sold together. Connect a sync cable (Lion Precision Part Number 6203-0820) from the SYNC OUT of one system to the SYNC IN of the other system. Using multiple systems with the same target without synchronization will result in decreased performance.


Output 1-4 Connections
Device Connector: 8-Pin, M12, Female Output Cable PN: 6203-0810
Pin Wire Color Connection
1 White Ch1 Out
2 Brown Ground
3 Green Ch2 Out
4 Yellow Ground
5 Gray Ch3 Out
6 Pink Ground
7 Blue Ch4 Out
8 Red Ground

 


Output 5-8 Connections
Device Connector: 8-Pin, M12, Female Output Cable PN: 6203-0810
Pin Wire Color Connection
1 White Ch5 Out
2 Brown Ground
3 Green Ch6 Out
4 Yellow Ground
5 Gray Ch7 Out
6 Pink Ground
7 Blue Ch8 Out
8 Red Ground

 


Specifications
Parameter Specification Notes
Power Requirement
12 to 24 VDC,
1-2 Channels – 2.5 W
3-4 Channels – 3.5 W
5-6 Channels – 4.5 W
7-8 Channels – 5.5 W
Resolution RMS @15 kHz (Typical)1, 2 nonferrous
ECL150: 0.006 to 0.008%F.S.
ECL150e: 0.3 µm or higher3
See calibration sheet for specifics
ferrous
ECL150: 0.007 to 0.1%F.S.
ECL150e: 0.3 µm or higher3
Linearity1 ±0.2%F.S.
Error Band1 ±0.4%F.S.
Analog Output1 ±5 VDC, 0 Ω, 15 mA max
Analog Output Update Rate 15 µS
Driver Operating Environment 4°C-50°C, IP64
Probe Operating Environment Standard Probes -25°C to +125°C, IP67
High Temp. Probes -25°C to +200°C, IP63

 

1Actual values depend on probe and range and are listed on the calibration certificate shipped with the product. Contact Lion Precision for replacement certificates.

2In High EMI environments (10 V/m), output noise levels may rise to 60 mV (0.6% resolution) and DC level may shift by 0.2 VDC.

3The ECL150e is identical to the ECL150 except that resolution is limited to a best case of 0.3 µm. For this reason, the ECL150e does not require an export license. For details on export restrictions, please refer to www.lionprecision.com/exports-and-the-ear99-classification/

Parameter Specification Notes

Temperature Coefficient (Driver)

±% F.S./°C

nonferrous U3 Probe 0.04 Over 15°C to 50°C temperature range 
U5 Probe 0.10
U8 Probe 0.04
U12 Probe 0.01
U18 Probe
U25 Probe
U38 Probe
U50 Probe
ferrous U3 Probe 0.08
U5 Probe 0.10
U8 Probe 0.04
U12 Probe 0.01
U18 Probe
U25 Probe
U38 Probe
U50 Probe

Temperature Coefficient (Probe)

±% F.S./°C

nonferrous U3 Probe 0.04 Over 15°C to 65°C
temperature range except where noted.
U5 Probe 0.04
U8 Probe 0.02
U12 Probe 0.02
U18 Probe 0.01
U25 Probe
U38 Probe
U50 Probe
ferrous U3 Probe 0.08
U5 Probe 0.10
U8 Probe 0.04
U12 Probe 0.03
U18 Probe 0.01
U25 Probe
U38 Probe
U50 Probe

 


Mechanical Detail


Power Supply

Power In: 100-240 VAC 50-60 Hz

Power Out: 12 VDC @ 1.5 A (18 W)

CE and UL registered