Dwyer SCC-POT-C User Manual

SCC OPEN SIGNAL Family

Model SCC-POT/C Single Channel Module

NOTE: THIS IS A FACTORY CONFIGURED UNIT

FACTORY CONFIGURATION

Each SCC-POT/C unit is configured and calibrated at the factory for the input signal range and voltage output range printed by the factory on the SCC unit’s side-label.

The SCC-POT/C unit is capable of accommodating 0 to 500 Ohms or 0 to 100KOhms at its input. The unit automatically selects the proper input range for the connected potentiometer. Factory configured units have been calibrated for a 0 to 10KW input The SCC-POT/C unit is capable of a 0 to 20mA or 4 to 20mA output signal. Unit reconfiguration requires Dwyer Instruments, Inc. Configurator Utility.

This SCC unit may be reconfigured by a user at any time via their personal computer (PC) or handheld personal computer (HPC) by installing Dwyer Instruments, Inc. Windows®/PC or Windows®/CE HPC based SC Configurator Utility, interfacing the SCC unit to the computer’s RS-232C comm port with an SCC Configuration Cable (sold separately), and then changing the unit’s input/ output configuration settings.

OPERATIONAL DESCRIPTION

The SCC family of single channel signal conditioning and isolating modues are intelligent, user programmable, high-accuracy, user friendly, signal conditioning units.

Each SCC model supports one (1) specific analog signal-type on its input channel and outputs one (1) high-level current or voltage signal depending upon model. A diverse SCC model family permits users to select the model which meets their unique signal conditioning needs.

TERMINALS

SCC models may be purchased with a factory preset configuration for plug-n-play application or available unconfigured so user may configure the unit to meet their unique need. All SCC models may be configured/reconfigured by a user at anytime through use of an optional SCC Configuration Package.

Theory of Operation - An analog world input signal arriving at the SCC unit is isolated, filtered, amplified, scaled and/or linearized (as required) by the units onboard microprocessor under the direction of the unit’s configuration parameters set by the user (or factory) via Windows®/PC or Windows®/ CE HPC (Handheld Personal Computer) based SC Configurator Utility.

The conditioned signal is then converted to a high level analog current or voltage output signal (depending upon model) and presented at the unit’s isolated output.

REQUIREMENTS

Mandatory:

• 15 - 32VDC, 30mA external supply voltage

Optional:

• SC Configuration Package (Part No. SCCCC-A1) Package consists of:SC Configurator Utility and SCC Configuration Cable.

INSTALLATION

1. Mount SCC unit on standard TS32 or TS35 DIN rail.

2. See wiring diagram on reverse side. Connect external 15 to 32VDC power source to SCC unit: Positive (+) to SCC terminal +VDC Negative (-) to SCC terminal -VDC/-OUT

WIRING

TERMINAL

BLOCK

ENCLOSURE

COVER

3. Connect Potentiometer to SCC unit: Pot 1 to SCC terminal POT1 Pot Wiper to SCC terminal POT WPR Pot 3 to SCC terminal POT3

4. Connect output actuator/device to SCC unit: Positive (+) to SCC terminal +OUT Negative (-) to SCC terminal -VDC/-OUT

DIAGNOSTIC TOOLS

Two LEDs one RED and one GREEN are located on the front face of the SCC’s enclosure and provide user with visual indication as to unit operation.

LED FUNCTIONALITY

LED’s have three operational states:

Steady ON Steady OFF Blinking

Condition: GREEN = BLINKING

RED = Steady OFF

Meaning: Module is processing data.

Condition: GREEN = Steady ON

RED = Steady ON Meaning: 1) Configuration data is not loaded in module memory. -OR- 2) During module re-configuration both LED’s are normally ON indicating data is being properly transferred to or from module memory.

Condition: GREEN = BLINKING

RED = BLINKING Meaning: The measured input signal is outside the modules configured range. When the signal is within configured range the LED’s indicate normal operation.

All other combinations indicate the module is not operating correctly.

SNAP-ON TAB

(TERMINAL MARKERS)

SNAP-ON TAB

(COVERS COMM CABLE PORT)

GREEN LED

CABLE

PORT

RED LED

TERMINAL

SET SCREW

15 to 32 VDC

Power Source

+VDC

-VDC/-OUT

ANALOG

+OUT

ACTUATOR

DEVICE

POT 1

POT W PR

POT 3

A = Pot 1 B = Pot Wiper C = Pot 3

SCC-POT/C Wiring Diagram

CONFIGURATION CHANGE

An SCC’s configuration can only be changed through use of a personal computer running our Windows® based SC Configurator Utility and a special configuration communication cable to interface the SCC unit and personal computer together. (See Requirements - on reverse side for purchasing information.)

Instructions on how to accomplish configuration change are included with SC Configuration Package and not covered here.

SPECIFICATIONS

Input Power: 15-32VDC Isolation: 2 way input to power/output 1500V peak Over Voltage: 240VRMS continuous Step Response to 99%: 0.3 seconds Operating Temp.: -40 to +75°C Storage Temp.: -40 to +85°C Mounting: 32 and 35mm DIN Rail & G Rail Dimensions: 75mm H X 12.2mm W X 60 mm D (2.95” X 0.485” X 2.5”), 24 modules can be installed per linear foot of DIN Rail Diagnostics LEDs: Active and alarm indications Maximum Wire Size: 14 AWG Input Type: Potentiometer Input Range: 0 to 500 Ohms or 0 to 100K Ohm Accuracy: ±0.05% Output: Current -- 0 to 20mA or 4 to 20mA

Warning: Initial power-up requires a mini-

mum of 15 Vdc and a maximum of 32 Vdc. Any voltage outside this range will cause damage to the unit. When installing or servicing the unit, take precautionary steps in preventing any electrostatic discharge to the unit.

Caution: The torque specification for tight-

ening the wire terminal set screws is 2.0 in/lbs. Any torque greater than this will cause damage to the unit.

Recommended torque: 2.0 in/lbs

TRADE SECRETS AND PROPRIETARY NOTICE -- This document and the software described therein contains valuable trade secrets and proprietary information of Dwyer Instruments, Inc. and are copyrighted with all rights reserved. Under the copy righted laws, this document and the driver software supplied by Dwyer Instruments, Inc. may not be copied, in whole or part, without the written consent of Dwyer Instruments, Inc., except in the normal use of the software or to make a backup copy. The same proprietary and copyright notices must be affixed to any copies to be made for others, whether or not sold, given, or loaned to another person. Under the law, copying includes translating to another language or format.

Dwyer Instruments, Inc. in developing this product and drivers for applicable programmable logic controllers has attempted to offer the most current, correct and clearly expressed information possible. Nonetheless, errors can occur. Except as expressly set forth above, Dwyer Instruments, Inc. does not warrant that driver software is free from bugs, errors, or other application limitations.

WARRANTY -- Manufacturer (Dwyer Instruments, Inc.) warrants that its product, under normal use and specified use, is free from defects and poor workmanship for a period of twelve (12) months from the date of shipment from the Dwyer Instruments, Inc. factory. Dwyer Instruments, Inc. makes no other warranties or representations express or implied, whether of merchantability, suitability of fitness for a particular purpose or otherwise

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RETURNING MATERIAL TO THE MANUFACTURER -- Should it become necessary to return any material to the manufacturer (Dwyer Instruments, Inc.), a Return Authorization (RA) number must first be obtained. Telephone Dwyer Instruments, Inc. at 219-879-8868 or 219-879-8000 or Fax 219-879-9057 to request an RA#. Be prepared to: (1) Identify the material to be returned (model, S/N, sales order#); (2) Detail the reason for the return; (3) Describe the “next step” expectations from Dwyer Instruments, Inc.; (4) Provide a Purchase Order, if a replacement is requested prior to the receipt of the return -- even if it is believed that the return is covered under warranty.

When returning material to Dwyer Instruments, Inc., the RA# must be included on all shipping documents and prominently displayed on the outside of the shipping container -this will reduce your turn around time.

LIMITATION OF LIABILITY -- Buyer and/or end users sole remedy shall be the repair or replacement of the defective product with any damages limited to the purchase price of the product. In no event shall manufacturer have any liability for the direct, indirect, special, consequential or incidental damages, including but not limited to loss of profits, use or production, or for another claim for damages whether based or claimed in contract, warranty, negligence, strict liability, indemnification or otherwise.

COPYRIGHT NOTICE -- This document and the accompany driver software diskette(s) are Copyright 1995 - 1997 by Dwyer Instruments, Inc.. All right reserved. The software described in document is furnished as-is.

F.C.C. STATEMENT -- This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if into installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to correct the interference by one or more of the following measures: (1) Reorient or relocate the receiving antenna; (2) Increase the separation between the equipment and receiver; (3) Connect the equipment into an outlet on a circuit difference from that to which the receiver is connected; (4) Consult the dealer or an experienced radio/TV technician for help.

INSTALLATION AND SAFETY GUIDANCE NOTES Environment - Dwyer Instruments, Inc. products are designed to operate reliably and

safely in their specified environment. However the following guidelines must be followed to ensure Safety, Electromagnetic Compatibility and Performance.

• Products have been tested for the Industrial Environment (BS EN 50081-2 and 50082-2) unless otherwise stated. Operation in any other environment is not guaranteed and at the risk of the User.

• The User is required to suppress high energy transients, such as those caused by lightning strikes, unless the product is specified for such purposes. Non-resistive loads and contact arcing must be suppressed at source.

• Products are intended for installation inside an equipment cabinet or suitable enclosure unless otherwise specified. This should be accessible only to qualified personnel during commissioning and maintenance. Open chassis products for use above 50V should only be accessible by the removal of a cover using a key or tool.

• Anti-static precautions and conventional Instrumentation best practice must always be observed. Each active module should be protected by a suitably rated fuse or equivalent protection device.

Product EMC Performance - The performance of Dwyer Instruments, Inc. products that fall within the scope of the EMC directive will meet the requirements of the relevant performance criteria as determined by the particular tests listed in the EMC standards. Products may temporarily be affected by the application of some electromagnetic disturbances but will return to published specification thereafter. Individual product details on request.

Directives - Dwyer Instruments, Inc. products are intended for installation by qualified personnel into a larger piece of equipment or system and are not accessible by the operator or that equipment or system under normal use. They do not contain any moving parts as defined by the Machinery Directive and do not fall within the scope of either the Machinery Directive or the Low Voltage Directive unless other stated. The responsibility for the final equipment or system lies with the builder of that equipment or system. It is the duty of the system designer or installation engineer to ensure that our products are used in accordance with our instructions and that current safety, wiring and other relevant regulations are followed.

For order entry, application, or customer service assistance,

Dwyer Instruments, Inc.

P.O. Box 373 Michigan City, IN 46361 (USA) Phone: 219-879-8868/219-879-8000 Fax: 219-879-9057

DS 10-5000-07 Jun-00

All Prices and Specifications subject to change without notice