DCT500A - Dwyer Instruments, Inc.

DCT500A - Dwyer Instruments, Inc.
BULLETIN E-98A
Series DCT500A Timer Controller
Specifications – Installation & Operating Instructions
75
25
300
200
150
R31
1
HIGH
LIMIT
250
125
50
175
1 2 3 4 5 6 7 8 9 10
400
R29
100
SEC 200
CONNECT JUMPER TO LAST
CHANNEL USED
TIME ON
350
150
50
DWYER INSTRUMENTS
MICHIGAN CITY, IN
100
TIME OFF
450
500
mSEC
COM
LOW
LIMIT
POWER
ON
05-443179-00
VER 0
FVN 1.0.0
INDUSTRIAL CONTROL EQUIPMENT
LINE INPUT RATING 120 VAC +10%-15%
50/60 HZ SINGLE PHASE. THIS UNIT MUST BE
ENCLOSED. USE NEC CLASS 1 WIRING RATED
60C/75C. USE 14-22 GA COPPER ONLY FOR LINE
AND LOAD CONNECTIONS. TORQUE TERMINALS
TO 5 IN. LB. REPLACE FUSE WITH TYPE 3AG FAST
ACTING 3 AMP 250V ONLY. FAILURE TO COMPLY
WITH THESE REQUIREMENTS WILL VOID
MANUFACTURES WARRANTEE.
D16
4-1/4
[107.95]
4-7/8
[123.8]
WIRE STRIP GAUGE
0.250 IN. MAX
DO NOT USE SLOW BLOW FUSES
LINE VOLTAGE
102 VAC TO 132 VAC MAX
50-60 HZ
L1 L2 SOL 1
COM
2
3
4
5
6
7
8
9 10
OUTPUTS (300 VA MAX)
6-1/4
[158.75]
1/16
[1.59]
6-3/4
[171.45]
1-21/64
[33.73]
Introduction
The Series DCT500A Timer Controller is a timing system for pulse-jet type dust collectors 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 requiring 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 procedures 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 slowblow type fuses. Failure to comply with this requirement will pose a serious safety risk and will void manufacturer’s warranty.
Warning: As a permanently installed piece of equipment, a power disconnect 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 voltage 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.
1/2
[12.70]
SPECIFICATIONS
Output Channels: 4, 6, & 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 outside 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 connector 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 connectors 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 voltages to possible contact.
Switches connected to the control inputs at the top of the board must be isolated normally open contacts connected only to the relevant terminal and to the common terminals.
The following subparagraphs describe the external switch connections. Refer to figure 2-1 for switch connection illustration.
Phone: 219/879-8000
Fax: 219/872-9057
www.dwyer-inst.com
e-mail: [email protected]
SHORT FOR
CONTINUOUS
OPERATION
HIGH
LIMIT
PRESSURE
LIMIT
SWITCHES
LOW
LIMIT
TIME OFF
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 resolution 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 following 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.
CONNECT JUMPER TO
LAST CHANNEL USED
1 2 3 4 5 6 7 8 9 10
TIME ON
TB2
HIGH
LIMIT
COM
LOW
LIMIT
0.31 TYP [7.87]
4 PLACES
TB1
L1 L2 SOL 1 2
COM
3 4 5 6
7 8
9 10
OUTPUTS (300VA MAX)
8.88
[225.6]
7.73
[196.3]
LINE
INPUTS
SOLENOIDS
FIGURE 2-1 Switch Connections
External Limit Switch Connection
The controller may be used with an external pressure limit switch or sensor to provide 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® pressure 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 operation of these inputs is summarized as follows:
4.00
[101.6]
4.00 TYP
[101.6]
4.45
[113.0]
5.74
[145.8]
Weatherproof Enclosure Option
Low Limit
Current
Switch
Operation
Open
Hold
X
Hold or Run
Ø
Hold
Closed
Hold
Closed
Run
Closed
Hold
≠
Run
Ø – Transition from open to closed
≠ – Transition closed to open
X – Either open or closed
High Limit
Switch
Open
Closed
Open
Ø
≠
Ø
Open
Next
Operation
Hold
Run
Hold
Run
Run
Run
Hold
Explanation of Symbols:
Symbol
Caution: Risk of electric shock
Caution: Risk of danger, refer to user’s manual for further
information
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 common connection. Two setup parameters control operation: time off, time on. 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 channel where the last cleaning cycle left off.
~
Alternating current
Agency Approvals and Test Standards:
UL:
UL508: 2008
IEC 61010-1: 2001-02
CE:
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
Description
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
Printed in U.S.A. 7/09
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Phone: 219/879-8000
Fax: 219/872-9057
FR# 05-443180-20 Rev.2
www.dwyer-inst.com
e-mail: [email protected]
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