955 Series Series 956 INSTALLATION MANUAL LINEAR DISPLACEMENT TRANSDUCERS 955D BRIK GEN III WITH DIGITAL OUTPUT Includes 955D Programming & Maintenance Instructions Plus Accessory Guide ABSOLUTE PROCESS CONTROL KNOW WHERE YOU ARE...
Preface This manual is divided into three chapters. Chapter 1 provides the hardware overview for the 955D Linear Displacement Transducers (LDT). Chapter 2 provides instructions for installing the LDT to a mounting bracket. Chapter 3 provides an overview and wiring instructions. To further assist you, a glossary is provided at the back of the manual. U CAUTION ! Disconnect Power Before Servicing. The Gemco 955D LDT Contains No Serviceable Components. Consult Factory for Repair or Replacement.
Chapter 1 Hardware Overview Chapter 2 Installing the LDT Overview 2.1 Mounting Instructions The Series 955D BRIK with Digital Output is an accurate, auto-tuning, non-contact, Linear Displacement Transducer in an economical, low profile package. The transducer utilizes our field proven magnetostrictive technology to give absolute position, repeatable to .006% of the sensing distance. The streamlined anodized aluminum extrusion houses the sensing element and electronics.
Dimension Drawing Accessories Item Part Number Slide Magnet SD0521800 Float Magnet SD0522100 Mounting Foot SD0522000 6 Ft. Cable (6 Pin, Straight Micro Connector, Option E) 949021L6 12 Ft. Cable (6 Pin, Straight Micro Connector, Option E) 949021L12 6 Ft. Cable (6 Pin, Right Angle Micro Connector, Option E) 949022L6 Mounting Brackets (SD0522000) slide in the grooves on the side of the extruded housing. When tightened down with fastening hardware the mounting bracket clamps the unit into place.
Chapter 3 955D Outputs 3.1 CP (Control Pulse) The Control Pulse signal interface of the BRIK digital output series is a differential RS-422 output. The maximum cable length for the differential digital LDT’s is 1,500 feet. To initiate a start pulse, an external device is used. This start pulse should be 1.0 microsecond in duration. After the start pulse is received, the LDT will generate a stop pulse of 1.0 microsecond in duration.
3.3 RS (Start/Stop) The Start/Stop signal interface of the BRIK digital output series is differential RS-422 output. The maximum cable length for differential LDT's is 1,500 feet. To initiate a start pulse, an external device is used. This start pulse should be a minimum of 1.0 microsecond in duration. Within 50 nanoseconds after the leading edge of the start pulse, the LDT will generate a start pulse of 1.0 microsecond in duration. A stop pulse of 1.0 microsecond in duration will follow.
Figure 3.6 Wiring Diagram Part Number 949-021LX (X = Length in Feet) Shield Cable Assembly Part Number 949-021LX (X = Length in Feet) PIN - 1 BROWN PIN - 2 WHITE PIN - 3 BLUE PIN - 4 BLACK PIN - 5 GRAY PIN - 6 PINK POWER + OUT + 3.
3.6 Troubleshooting for 955D Troubleshooting describes common problems that may occur when installing the LDT and offers possible solutions to these problems. If, after reading this appendix, you are unable to resolve a problem, contact our technical support department at 1-800-635-0289. General Checks Make sure that the magnet is located within the LDT’s active stroke area.
3.7 Catalog Numbering System Variable Pulse 955D VP 955D BRIK with Variable Pulse Output Output Mode VP = Variable Pulse 0120 E 001 X Options X = None E = Wet environment. Electronics sealed to IP68 Rating. Stroke Length Insert stroke length to 0.1 inch. Enter as a four-place number. Example A 12.0” stroke enters as 0120. To convert a metric stroke in millimeters, multiply millimeter value by 0.03937 to arrive at inch value.
3.9 Accessories Floating Magnet Assembly Part Number SD0522100 Slide Magnet Assembly Part Number SD0521800 R.87 360 ROTATION .34 1.31 .25 .50 1.37 .68 1.00 TO CENTERLINE OF MAGNET .25 .20 THRU .359 C’BORE .21 DEEP OTHER END 2 PLACES OF MAGNET SLUG 1.50 .08 .87 .28 1.30 .56 2.00 .25 TO CENTERLINE OF MAGNET SENSOR .34 1.31 .75 1.04 .69 Mounting Foot Part Number SD0522000 .20 THRU 2 PLACES .50 6 Pin Micro 12mm Euro Straight Cable Part Number 949-021LXX X = Length in Feet 0.2 (4 Holes) .
955D Glossary Active Stroke Area The area on the extrusion between the Null Zone and Dead Band on which the magnet assembly moves. Dead Band An area usually 2.0” from the end of the extrusion where sensing of the magnet is not possible. Floating Magnet A non-ferrous assembly that contains the magnet that moves across the LDT’s sensing surface in a non-contact manner. External Device A device wired to the LDT which generates external interrogations.
Other Products Copyright 2004 by AMETEK AUTOMATION & PROCESS TECHNOLOGIES. All Rights Reserved. Made in the USA. 1080 N. Crooks Road, Clawson, MI 48017-1097 Phone 248-435-0700 Toll Free 800-635-0289 Fax 248-435-8120 www.AMETEKAPT.com 955D.M1RO 10/04.
