Dwyer DCT600 User Manual

Series DCT600 Timer Controller

Specifications – Installation & Operating Instructions

4-1/4

[107.95]

4-7/8

[123.8]

BULLETIN E-99

1/2

[12.7]

1/16

[1.59]

[1.59]

1-23/64

[34.53]

[12.7]

1/16

1/2

1-3/16

[30.16]

[158.75]

8-1/4

[209.55]

6-1/4

[171.45]

8-3/4

[222.55]

6-3/4

6-1/4

[156.75]

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[174.62]

Introduction

The Series DCT600 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 provides either 4, 6,10, 22 or 32 channels. The DCT600 was designed
for ease of installation in your dust collector system. For installations requiring fewer
channels than available on the board, a shorting plug (DCT610) or dip switches
(DCT632) allows 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 jumpered. For safety, the control circuitry including the control inputs and the
last channel jumper, is isolated from the power line.

DWYER INSTRUMENTS, INC.

SPECIFICATIONS
Output Channels: 4, 6, 10, 22 & 32 channels.
Voltage Requirements: 85 to 270 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.

Phone: [phone] www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: [phone] e-mail: [e-mail]

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.

As a permanently installed piece of equipment, a power disconnect
switch, circuit breaker, 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 either 120 VAC or 240 VAC 50/60 Hz
power. The input voltage must be between 85 VAC and 270 VAC either 50 or 60 Hz.
The solenoid loads must be rated for the line voltage.

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.

Figure 2-1 Wiring Connections DCT622, DCT632

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 or Figure 2-2 depending on model.
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. These switches should be rated for low voltage and low current operation.

The following subparagraphs describe the external switch connections. Refer to fig­ure 2-1 or Figure 2-2 depending on model for switch connection illustration.

Figure 2-2 Wiring Connections DCT604, DCT606, DCT610