Logika Technologies HMD-FOC User manual

Logika Technologies Inc.
1250B Reid Street, Unit 12, Richmond Hill, ON Canada L4B 1G3
HMD-FOC Hot Metal Detector
Static Mode Fiber Optical Cable
Operator’s Manual
Revision 1.02

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
Web: www.logikatech.com Phone: [phone] Fax: [phone] Email: [e-mail]
P a g e 1
Contents
1. INTRODUCTION ................................................................................................................................. 2
2. DESCRIPTION ..................................................................................................................................... 2
2.1 Model Nomenclature .................................................................................................................................. 2
2.2 Specifications .............................................................................................................................................. 3
2.3 Operating Principle ..................................................................................................................................... 3
2.4 Sensitivity Adjustment ................................................................................................................................ 3
3. OPTICAL LENS AND CABLE ............................................................................................................ 4
3.1 A1 Lens........................................................................................................................................................ 4
3.2 B1 Lens ........................................................................................................................................................ 5
3.3 Fiber Optical Cable ...................................................................................................................................... 5
3.4 HMD Enclosure ........................................................................................................................................... 6
4. WIRING CONNECTIONS ................................................................................................................... 6
4.1 Electrical Connections ................................................................................................................................. 6
4.2 Purge Air Connection .................................................................................................................................. 7
5. OPERATION ......................................................................................................................................... 8
5.1 Controls ...................................................................................................................................................... 8
5.2 Automatic Threshold Level Description ....................................................................................................... 8
5.3 Self Test ...................................................................................................................................................... 8
5.4 Troubleshooting .......................................................................................................................................... 9
6. MAINTENANCE ................................................................................................................................... 9
6.1 Regular Maintenance .................................................................................................................................. 9
6.2 Returns of HMD-ST-FOC ............................................................................................................................ 10

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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P a g e 2
1. Introduction
The Logika Technologies static mode hot metal detector, Model HMD-ST-FOC, is designed to
detect hot metals (above 360°C) and aid in the automation of steel, aluminum and other
industrial applications. It includes a rugged IP66 enclosure protecting state-of-the-art
electronics and will withstand the harsh ambient conditions present in heavy industrial
environments. The HMD-ST-FOC is used primarily for detection of hot metals in applications
such as wire rod, bar, strip, thin plate, thick plate, billet and slab in production.
2. Description
2.1 Model Nomenclature
HMD-FOC-HT-024-xxx
Logika Hot Metal Detector
Fibe Optical Cable Model
Detect Range
HT 550¡ãC---1400¡ãC
LT 360¡ãC---1400¡ãC
Power Supply
024 24VDC
110 110VAC
240 240VAC
Fiber Cable Length
If Blank for Standard 2 Meters long

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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2.2 Specifications
Electronics part
Operating temp
-
25
˚C to +70˚C (
-
13
˚F to +158˚F)
.
Detect Range
0.2
-
8m
Response time
Relay < 20 ms, PNP/NPN < 2 ms
LED Indicators
Green = power on,
Red = target detect
Output
Relay
30VDC/220VAC
@ 5A
High on Detect(PNP): max 100mA
Low on Detect (NPN): max 100mA
Power Input
24 VDC, 110VAC, 220VAC @ 5W
Fiber Cable
Standard 2 meter
s long
, other length is available
on
request
Cable for
electronics part
2.5 meters, 11 conductors, steel
braided
Sensor detect
Infrared range
HT Model: 500
°C
-
1400
°C
, 700nm-1200nm
LT model: 360°C-1400°C, 900nm-1700nm,
Self testing
TEST PIN
Protection
DC polarity, output overload, short
circuit protection
Weight
1.3 kg
(
2.8
Lbs)
2.3 Operating Principle
Detector - The HMD-ST-FOC receives infrared radiation from high temperature objects and
transmits the light energy through a specially designed fiber optical cable onto a photo sensor
inside the HMD. This light energy is then converted into an electrical signal.
Fiber Optical
cable Electronics
Optical Lens
Figure 1: HMD-ST-FOC Overview
2.4 Sensitivity Adjustment
This feature makes the HMD more stable and reduces detection errors caused by background
infrared radiation sources, varying surface temperature or interference from water vapor and
scale.

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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3. Optical Lens and cable
3.1 A1 Lens
Lens housing Cylindrical, Stainless Steel, with air purge
Ambient Temperature -25 °C ~ 300 °C (-13 °F ~ 572°F)
Field of View
(Target temperature at
700 °C)
No Ring: 1.8°
8mm Ring: 1.5°(Default)
6mm Ring: 0.85°
4mm Ring: 0.6°
2mm Ring: 0.55°
Installation angle ±45°
Air Purge Pressure 0.1MPa (14 psi), Volume 6L/min (0.21 cfm)

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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3.2 B1 Lens
Hole
Purge Fitting
Fiber Optical
Cable
Lens housing Cylindrical, Stainless Steel, with air purge
Ambient temperature -25 °C ~ 300 °C (-13 °F ~ 572°F)
Field of View 4.5° (other views can be special ordered)
Installation angle ±45°
Air Purge Pressure 0.1MPa (14 psi), Volume 6L/min (0.21 cfm)
3.3 Fiber Optical Cable
Stainless Steel
Flexible Conduit
L: 2m standard, other lengths are available on request

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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P a g e 6
3.4 HMD Enclosure
Telectrical
Connector Fiber Optical
Cable Connector
Power Detect
Sensitivity
4. Wiring Connections
4.1 Electrical Connections
Electrical Overview- All electrical connections (power and signal) to the HMD-ST-FOC are made
via a 12-pin connector with ground. The HMD is supplied with a mating connector at the back
of its enclosure and a standard 2-meter cable with a quick-connect assembly. This cable is also
wired with ferrule terminals for the junction box connections. Custom cable lengths are
available from Logika Technologies upon request.
Cable Specifications
 Multi-lead cables – 11 x 0.34 mm²
 Outer metallic braid for mechanical protection.
 Overall diameter of 9 mm.
 Minimum bending radius of 30 mm.
Note: Static and Relay output are isolated, allowing the two types of outputs to be used
separately or at the same time.

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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Number Color Pin No. Function
1 Brown K +24VDC /AC L
2 Red M 0V DC/AC N
3 Orange A +24VDC Out
4 Yellow B 0VDC Out
5 Green G Earth
6 Blue J PNP (S)
7 Purple L Self test
8 Gray D Relay NO.
9 White E Relay COM
10 Pink F Relay NC.
11 Black C NPN (/S)
Figure 4.1 Cable Terminal Wiring Table
4.2 Purge Air Connection
 Description- Compressed plant air should be used to protect the lens from dust and vapor.
Purge air cleans the lens, reduces maintenance time, and prolongs HMD-ST-FOC’s life in
dusty or corrosive environments.
 Compressed Air Requirements
 Must be clean, dry instrument air. Poor air quality will result in a dirty lens and decrease
detector performance. Air filtration prior to the inlet fitting is recommended to improve
the quality of purge air.
 Air Pressure range from 4.9 to 19.6 kPa (0.7 psi to 2.8 psi)
 Air Flow rate from 4 to 16 L/min (0.14 to 0.56 ft3/min)
 Connection- Connect plant air to the purge air barbed fitting on the detector’s lens shroud
with Φ10mm ID (or 3/8” ID) hose. Purge air flows out of the lens and dissipates into the
environment.

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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P a g e 8
5. Operation
5.1 Controls
The HMD-ST-FOC’s control panel is located on the top of the housing. The following functions
are available on the control panel.
LED1 = Green: Power is on.
LED2= Red: Hot target is detected
Potentiometer = Sensitivity range adjustment
5.2 Automatic Threshold Level Description
 Definition- The HMD-ST-FOC includes an Automatic Threshold Level Adjustment. The
HMD’s circuitry will automatically decrease the threshold level when hot metal enters the
target area to prevent signal saturation. When the hot target leaves the detection area the
threshold level returns to its initial setting.
 Sensitivity- Adjust the Threshold Level Potentiometer upon installation to determine the
base detector signal according to the application requirements. As the potentiometer
setting increases from low to high (rotating clockwise), the HMD sensitivity (gain) increases.
This enables the user to prevent interfering background radiation from resulting in false
positives of the HMD’s output. The lower the potentiometer setting, the hotter the target
should be and greater interfering background radiation will be eliminated.
5.3 Self Test
To test whether the HMD is in working condition, follow steps below:
 Connect power to the HMD to make sure green LED is on.
 Use multi-meter to measure the voltages on PNP output pin (Blue) and NPN output pin
(Black), referring to 0VDC pin (Yellow):
1. For PNP output: 0VDC
2. For NPN output: 24VDC
Measure the connection of Relay:
NO (Normally Open) pin (Gray) – Common (White) disconnected

Logika Technologies HMD-FOC Operation Manual Rev 1.02 July 2016
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NC (Normally Closed) pin (Pink) – Common (White) connected
 Connect Self test Pin (Purple) to 0VDC Pin (Yellow), Red LED will be ON. Use multi-meter
to measure the voltages on PNP output Pin (Blue) and NPN output pin (Black), referring to
0VDC pin (Yellow):
1. For PNP output: 24VDC
2. For NPN output: 0VDC
Measure the connection of Relay:
NO (Normally Open) pin (Gray) – (White) connected
NC (Normally Closed) pin (Pink) – Common (White) disconnected
5.4 Troubleshooting
 Missed Target- If the LED does not turn red when hot metal is in its detection field:
1. The threshold potentiometer is set too low. Go to Threshold Sensitivity Adjustment,
Section 5.2, and recalibrate the sensitivity adjustment.
2. Check HMD’s location and make sure the detection field covers hot metal.
 Detector sends false target detect output
1. The sensitivity is set too high. Refer to Section 5.2, adjust sensitivity.
2. If step 1 does not correct detector sending false output, check for background sources of
radiation such as reflected sunlight or hot objects close to the detector. Adjust the
Lens direction to make sure the disturbance as little as possible, or blocking the
interfering radiation source.
 Additional notes
1. No Power- Check that the wiring connections are correct, that the connections are
secure and tight and that the power supply is proper and normal.
6. Maintenance
6.1 Regular Maintenance
 Diagnostics- the HMD-ST-FOC does not require maintenance at a fixed period other than
periodic attention to the following to ensure consistent operation:
 Lens Cleaning- Routinely check the lens glass for dust or oil residue. Clean as required
with soft lint free cloth and lens cleaner.
 Adjustments- The level of sensitivity (see Section 5.2)