DCT500A - Dwyer Instruments, Inc.
Contents
1. Specifications Pu m H er THE di Tii Ti Mi sai itii F tiiitititi LEER ELELELEL EL al jt Introduction The Series DCT500A Timer Controller is a timing system for pulse jet type dust col lectors or pneumatic conveying systems in either continuous or on demand cleaning applications It is provided with either 4 6 or 10 channels The DCT500 was designed for ease of installation in your dust collector system For installations requir ing fewer channels than available on the board a shorting plug is provided to allow selection of the last used channel Time on and time off settings are selected using two potentiometers High limit and low limit control inputs are provided for use with on demand systems When used in a continuous mode the high limit input is jumped For safety the control circuitry including the control inputs and the last channel jumper is isolated from the power line Installation Warning Always install and service this device with the power off and a lockout installed if required Line voltages are exposed on the board As a result this device is not intended to be installed in any open location It must be installed within an enclosure that meets appropriate safety and local code requirements Follow applicable safety proce dures when installing or servicing this product Warning Always replace the fuse with the proper type and rating The fuse is Type 3 AG fast acting 3 Amp 250V DO NOT use sl2. Time on and time off specifically deal with the solenoid on time and the time interval between the end of the on pulse and the start of the next Demand Mode Demand mode operation can be configured using the high limit and low limit inputs A simple on off system can be setup with a single pressure switch connected to the high limit input Better control can be achieved with a high and low limit switch set such as is provided in the Photohelic pressure gage In this on demand mode time on and time off may be programmed to define the cleaning cycle When the cleaning cycle is completed the controller will continue the cycle until the last channel is pulsed The next cleaning cycle will always start on channel 1 A factory installed option is available that will not clean to the end of the cycle but rather stop where the cleaning cycle ended The next demand for cleaning will start the subsequent chan nel where the last cleaning cycle left off System Setup Last Channel Selection A jumper connector is provided to select the last channel used Place the jumper on the two pins corresponding to the last channel used in the installation Copyright 2009 Dwyer Instruments Inc INC Printed in U S A 7 09 Phone 219 879 8000 Fax 219 872 9057 Time Off and Time On Setup Time off defines the period of time between solenoid activations when no channels are enabled This value may be set between 1 second and 200 seconds with a res o
3. ec LIMIT ow DWYER INSTRUMENTS MICHIGAN CITY IN POWER ON E 3 05 443179 00 VERO N 1 0 0 INDUSTRIAL CONTROL EQUIPMENT LINE INPUT RATING 120 VAC 10 15 DO NOT USE SLOW BLOW FUSES LINE VOLTAGE CO 102 VAC TO 132VACMAX LSE Sut MA ouros 300 VA ee 171 45 SPECIFICATIONS Output Channels 4 6 amp 10 channels Voltage Requirements 102 to 132 VAC 50 or 60 Hz Power Consumption 1 8 W Input Power 302 VA max Load 300 VA max pilot rating C300 Fuse Type 3 AG 3A 250 VAC Ambient Operation Temperature 40 to 149 F 40 to 65 C Storage Temperature 40 to 176 F 40 to 80 C Humidity Conditions 5 to 95 noncondensing On Time 50 to 500 msec On Time Accuracy 5 of setting On Time Repeatability 1 msec Off Time 1 to 180 seconds Off Time Accuracy 5 of setting Pollution Degree 2 Altitude 6560 ft 2000 m max Environment Indoor use must be installed in a weather proof enclosure for out side applications Weight 9 oz 255 g Agency Approvals UL cUL CE Connections The line and solenoid connections are located at the lower edge of the board The terminal block is a Euro style connector system that clamps the wire within the con nector body The connector will accept wire sizes from 14 to 22 gages Wire must be copper only with at least 60 C or 60 75 C rated insulation These terminals should be torqued to 5 in lb The connec
4. lution of 1 second Time on defines the solenoid on time The value may be set between 50 msec and 500 msec with a resolution of 10 msec If adjustments are made while the system is in operation the new setting will take effect in the follow ing solenoid cycle Do not use excessive force to turn the potentiometers This will damage the unit A factory installed option is available for a time on range of 0 05 to 10 seconds 0 31 TYP 7 87 4 PLACES 7 tocol 4 00 TYP 101 6 Weatherproof Enclosure Option Explanation of Symbols Symb Desorption SSCS Caution Risk of electric shock Caution Risk of danger refer to user s manual for further information O Alternating current Agency Approvals and Test Standards UL UL508 2008 IEC 61010 1 2001 02 CE IEC 61000 4 2 2001 IEC 61000 4 3 2006 IEC 61000 4 4 2004 IEC 61000 4 5 2005 IEC 61000 4 6 2006 IEC 61000 4 11 2004 CENELEC EN 55022 2007 FCC Part 15 CFR Title 47 2007 ICES 003 2004 Digital Apparatus Industry Canada ANSI 63 4 2003 CENELEC EN 61326 1 2006 2004 108 EC EMC Directive FR 05 443180 20 Rev 2 www dwyer inst com e mail info dwyer inst com
5. on The controller may be used with an external pressure limit switch or sensor to pro vide demand cleaning operation A three pin terminal block provides connection for external high and low limit switches A simple on off system can be established with a single pressure switch connected to the high limit input Better control can be achieved with a high and low limit switch gage such as the Dwyer Photohelic pres sure gage The switches must be isolated contacts between the high or low limit input and the common connection The wiring from the switches must be two or three wires with no other connections made to these The common line must not be connected to equipment ground or protective ground since these may introduce electrical noise and cause improper operation or possible damage to the control board The opera tion of these inputs is summarized as follows Current Low Limit High Limit Next Operation Switch Switch Operation Hold aoe ee po Hold Opn Hold E E Run Transition from open to closed Transition closed to open X Either open or closed Operating Modes Continuous Cycle Mode The DCT500A has two operating modes available for different applications Starting with the most basic mode it is capable of operating in a continuous cleaning cycle This can be initiated by placing a jumper between the high limit input and the com mon connection Two setup parameters control operation time off time on
6. ow blow type fuses Failure to comply with this requirement will pose a seri ous safety risk and will void manufacturer s warranty Warning As a permanently installed piece of equipment a power dis connect switch circuit or other approved disconnect device must be installed in close proximity to the installed board and within easy reach of the operator This disconnect device must include a label indicating its function as a mains disconnect Power Requirements The controller is designed for operation on 120 VAC 50 60 Hz power The input volt age must be between 102 VAC and 132 VAC either 50 or 60 Hz The solenoid loads must be rated for 120 VAC operation Location The system must be located in an enclosure that meets relevant safety standards and electrical codes There are no other special orientation requirements Mount it using the four mounting holes in the baseplate The baseplate back is flush so no special spacers are needed to accommodate obstructions except for those imposed by the location itself Installed screws and other mounting hardware must maintain a spacing of 0 250 in 6 35 mm from the circuit board DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A BULLETIN E 98A Installation amp Operating Instructions CONNECT JUMPER TO LAST RETE 345678910 oo jo00000 200 jooo000 TIMI E OFF_ 50 300 TIME ON CO ja x 20 Z Y Ke ae CA ole 275 nC rat J Y SEC 200 50 as
7. tors are specified for single connection but multiple wires may be connected to a single lug provided local codes allow this and good workmanship practices are followed When using stranded wire make sure that there are no stray strands These pose safety hazards and may cause system failure or damage Connect the line power to L1 and L2 Connect the solenoids between the selected output and the solenoid common Solenoid common and L2 are internally connected Refer to Figure 2 1 The wire should be stripped to no more than 0 25 in A strip gauge is provided at the lower right corner of the board Longer than this may cause shorts or expose line volt ages to possible contact Switches connected to the control inputs at the top of the board must be isolated nor mally open contacts connected only to the relevant terminal and to the common ter minals The following subparagraphs describe the external switch connections Refer to fig ure 2 1 for switch connection illustration Phone 219 879 8000 Fax 219 872 9057 www dwyer inst com e mail info dwyer inst com DWYER INSTRUMENTS P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A SHORT FOR ee aes OPERATION TIME OFF TIME ON 12345678910 HIGH O LIMIT 7 PRESSURE LOW EE UM es LIMIT e O O O O O OO OOOO Li L2SOL1 2 3 45 6 7 8 9 10 COM OUTPUTS 300VA MAX Miccio LINE SOLENOIDS INPUTS FIGURE 2 1 Switch Connections External Limit Switch Connecti
Download Pdf Manuals
Related Search