Specifications – Installation and Operating Instructions

Specifications – Installation and Operating Instructions
E-97DC:e-97DC
7/15/09
8:51 AM
Page 1
Bulletin E-97DC
Series DCT1000DC Dust Collector Timer Controller
Specifications – Installation and Operating Instructions
Thank you for purchasing the Dwyer® DCT1000DC Dust Collector
Timer Controller. You have selected a state of the art dust collector
timer control that will provide years of dependable operation and
service.
SPECIFICATIONS
The Dwyer® DCT1000DC Dust Collector Timer Controller was
designed to be used with pulse-jet type dust collectors for ondemand or continuous cleaning applications.
Power Requirements: 10 - 30 VDC.
Continuous cleaning applications do not require external inputs and
can be used for time based “on-demand” cleaning through use of
the cycle delay feature.
DCT1000DC Timer Controller:
Output Channels: 6, 10, & 22 channels.
Solenoid Supply: 3A maximum per channel.
Fuse: 3A @ 250 VAC.
Temperature Limits: -40 to 140°F (-40 to 60°C).
Storage Temperature Limits: -40 to 176°F (-40 to 80°C).
For on-demand applications, the plug-in pressure modules
(DCP100A/200A) can be used to take full advantage of all the features the DCT1000DC offers, or an external pressure switch can be
used for High/Low limit control.
On Time: 10 msec to 600 msec, 10 msec steps.
The Dwyer® DCT1000DC was designed so that it is easy to use,
thus allowing for a quick and easy start up for your dust control
applications. The contents inside this installation and operating
manual will guide you through the features of the DCT1000DC and
how they can be applied to get the most out of your dust control
requirements.
Off Time Accuracy: ±1% of the value or ±50 msec,
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361 U.S.A.
On Time Accuracy: +/- 10 msec.
Off Time: 1 second to 255 seconds, 1 second steps.
whichever is greater.
Weight: 1 lb 3.0 oz (538.6 g).
Phone: 219/879-8000
Fax: 219/872-9057
www.dwyer-inst.com
e-mail: [email protected]
E-97DC:e-97DC
7/15/09
8:51 AM
Page 2
2-3/4
[69.85]
PROCESS (IN H2O)
LAST OUTPUT
TIME OFF (SEC)
TIME ON (M SEC)
SETUP STATUS
UP
DOWN
RUN
ALARM
RESET
HIGH LIMIT
LOW LIMIT
HIGH ALARM
LOW ALARM
CYCLE DELAY (MIN)
MANUAL
SELECT
OVERRIDE
DOWN TIME CYCLES
(MIN)
AUTO ALARM RESET
(SEC)
6-1/4
[158.75]
6-7/8
[174.62]
1/16
[1.59]
8-1/4
[209.55] 8-3/4
[222.25]
Figure 1 – Dimensional Specifications for the DCT1000DC
(shown with optional module DCP100A)
1-13/16
[46.04]
1-11/16
[42.86]
1/2
[12.70]
1
[25.40]
2-7/16
[61.91]
The Dwyer® DCP100A or DCP200A pressure modules are
designed exclusively for use with the DCT1000DC Dust Collector
Timer Controller boards for on-demand cleaning requirements.
These series of modules are available in 10˝ w.c. [2.49 kPa] or 20˝
w.c. [4.98 kPa] ranges, which allow for differential process pressure
measurement as indicated on the display of the master controller.
An isolated 4-20 mA readout channel is provided for remote pressure display. The 4-20 mA output may be wired either for use with
an external power supply and indicator or using the isolated onboard 24 volt power supply to power the loop.
2
SPECIFICATIONS
Pressure Ranges: 10˝ w.c. or 20˝ w.c.
Temperature Limits: -40 to 140°F (-40 to 60°C).
Pressure Limit: 10 psi (68.95 kPa).
Pressure Limit (differential): 10 psi (68.95 kPa).
Accuracy: ±1.5% F.S. @ 73°F (22.8°C).
Output Signal: 4-20 mA.
Alarm Contacts: 1.5A inductive load, 3A resistive load @ 30 VAC
or 40 VDC.
Process Connections: Two barbed connections for use with 1/8˝
(3.18 mm) or 3/16˝ (4.76 mm) I.D. tubing.
Weight: 5.5 oz (155.9 g).
E-97DC:e-97DC
7/15/09
8:51 AM
Page 3
Table of Contents
Page No.
Figure 1 Dimensional Specifications . . . . . . . . . . . . . . . .2
1.0
Installing the DCT1000DC . . . . . . . . . . . . .3
1.1
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DCT1000DC Terminal Connections . . . . . . . . . . . . . . . .3
External Pressure Connection . . . . . . . . . . . . . . . . . . . .3
Manual Override Switch Connection . . . . . . . . . . . . . . .4
Down Time Clean Connection . . . . . . . . . . . . . . . . . . . .4
Connecting Multiple Timer Boards . . . . . . . . . . . . . . . . .4
Continuous Cycle Mode . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 2 Wiring Connections . . . . . . . . . . . . . . . . . . . . .4
DCP Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 3 DCP Installation . . . . . . . . . . . . . . . . . . . . . . . .5
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Pressure Model Locking Pins . . . . . . . . . . . . . . . . . . . . .5
Connecting DCP to Master Controller . . . . . . . . . . . . . .5
DCP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
DCP Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Alarm Mode Switch Connection . . . . . . . . . . . . . . . . . .5
Alarm Reset Switch Connection . . . . . . . . . . . . . . . . . .5
Connecting the 4-20 mA Loop . . . . . . . . . . . . . . . . . . .5
Connecting the Alarm Relay . . . . . . . . . . . . . . . . . . . . . .6
Three Position Selection Switch Wiring . . . . . . . . . . . . .6
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.4
1.4.1
1.4.2
1.4.3
1.5
2.0
Programming the DCT1000DC Master
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
Last Output Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Time Off Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Time On Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
High Limit Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Low Limit Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
High Alarm Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Low Alarm Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Cycle Delay Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Down Time Cycles Setup . . . . . . . . . . . . . . . . . . . . . . .7
Auto Alarm Reset Setup . . . . . . . . . . . . . . . . . . . . . . . .7
3.0
Maintenance Support and Diagnostics . .7
3.1
3.2
3.3
3.4
3.5
Restoring Factory Defaults . . . . . . . . . . . . . . . . . . . . . . .7
Power Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Active Channel Indicator . . . . . . . . . . . . . . . . . . . . . . . .7
Comm Check Indicator . . . . . . . . . . . . . . . . . . . . . . . . .7
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.0
Glossary of Terms . . . . . . . . . . . . . . . . . . . .8
Customer Service Phone Number . . . . . . . . . . . . . . .. . 8
Caution: Do not run control wires, communication
cables, or other class 2 wiring in the same conduit as
power leads. The system may malfunction if class 2
wiring is run together with power conductors.
1.1 Power Requirements
The DCT1000DC requires 10 to 30 VDC supply power. The solenoids must be matched to supply voltage. DO NOT exceed 35V,
because transient suppression circuitry will begin to draw high current.
1.2 DCT1000DC Terminal Connections
The line and solenoid connections are located at the lower edge of
the board below the plastic guard. 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 AWG. The
wire should be stripped to no more than 0.25 inches to avoid
shorts. To assist you in determining the proper strip length, a strip
gauge is provided at the lower right corner of the board. The connector system used on the DCT1000DC is specified for single connection but you can piggyback to a single lug provided that local
codes allow for this and good workmanship practices are followed.
To power up the master controller and the channel expander, connect line power to (+) and (-) (see Dimensional Specifications, Figure
1). Connect the solenoids between the selected output and the
solenoid common. Solenoid common and (+) are internally connected. Switches connected to the control inputs at the top of the
board must be isolated contacts connected only to the relevant terminal and to the common terminals. The following subparagraphs
describe the external switch connections. Refer to figure 2 for
switch connection illustration.
1.2.1 External Pressure Connection
The controller may be used with an external pressure limit switch or
sensor to provide demand-cleaning operation. The high limit and
low limit inputs may be used for this purpose. A simple on-off system can be established with a single pressure switch connected to
the high limit input. In this on-demand mode, time on, time off, and
cycle delay may be programmed to define the cleaning cycle. A
three pin terminal block (TB3) provides connection for external high
and low limit switches (see Figure 2 on the next page). These
switches must be isolated contacts. 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
are summarized as follows (see next page):
1.0 Installing the DCT1000DC
The open frame design of the DCT1000DC will require an enclosure
that meets appropriate safety and local code requirements. For
optimal performance, the enclosure should also protect the controller from dirt, water and direct sunlight. There are no special orientation requirements, and the controller mounts easily using the
mounting holes on the factory installed base plate.
Current
Low Limit
High Limit
Operation
Switch
Switch
Hold
Open
Open
Hold or Run
X
Closed
Hold
Ø
Open
Hold
Closed
Ø
Run
Closed
≠
Hold
Closed
Ø
Run
≠
Open
Ø Transition from open to closed
≠ Transition closed to open
X Either open or closed
Next
Operation
Hold
Run
Hold
Run
Run
Run
Hold
Note: If a DCP100A or DCP200A pressure module is installed in the
master controller, the switching functions are ignored.
3
E-97DC:e-97DC
7/15/09
8:51 AM
Page 4
NORMALLY OPEN CONTRACTS
RECEIVER
4-20 MA
OUTPUT
DAISY
CHAIN
OUT
TB4
DAISY
CHAIN
IN
4-20 MA
SOURCE
EXTERNAL
INTERNAL ALARM CONTACTS
RECEIVER
OPTIONAL
CONNECTION
USING EXTERNAL
POWER SUPPLY
MASTER CONTROLLER
INPUT MUST NOT BE
CONNECTED
TB5
ALARM
LOAD
MASTER CONTROLLER
TO ADDITIONAL
EXPANDER MODULES
DAISY
CHAIN
IN
DAISY
CHAIN
OUT
SUPPLY
TB2
TB3
USING DCT1000
24V SUPPLY
SUPPLY
ALARM MAN D1 ALARM
COM MODE OVR CLN RESETCOM
LOW
HIGH
LIMIT COM LIMIT
4-20 mA CONNECTIONS
C3Ø4
(INTERNALLY CONNECTED)
(10 CHANNEL SHOWN)
TB1
F1
L1
L2
LINE
INPUT
SOL
COM
1
2
3
4
5
6
7
8
9
10
SLAVE BOARD
SLAVE CHANNEL EXPANDER
SOLENOIDS
(INTERNALLY CONNECTED)
(10 CHANNEL SHOWN)
TB1
L1
L2
SOL
COM
1
2
3
4
5
6
7
8
9
10
Figure 2
Wiring Connections
LINE
INPUT
1.2.2 Manual Override Switch Connection
The manual override function allows the system to be set to the run
mode regardless of other conditions. This mode is enabled when
the manual override terminal and common are connected. It is disabled when they are disconnected. If the controller is to be run in
continuous mode, a jumper wire may be wired across these terminals. When manual override is needed on a periodic basis, wire a
SPST toggle switch between the manual override terminal and the
common terminal.
1.2.3 Down Time Clean Connection
The down time clean operation forces the system into a run cycle
for a programmed length of time between 0 – 255 minutes. The
operation is initiated by connecting the down time clean terminal to
a common terminal. This function is best accomplished through use
of an external normally open switch.
1.2.4 Connecting Multiple Timer Boards
The DCT1000DC is available with up to 22 channels on single unit.
Where the installation requires more than 22 channels, the system
may be expanded up to 255 channels by daisy chaining multiple
controller boards. The system will automatically detect the total
number of channels and operate as a singel system.
To connect multiple boards together you will need one or more
jumper cables, Model DCA, available from Dwyer Instruments, Inc.
in various lengths. These are connected to the telephone-style connectors at the upper right side of the controller boards. One board
in the system is designated as the master. Subsequent units
4
SOLENOIDS
become slave boards. The master controller is the board at the
head of the chain having no connection to its daisy chain connector. Connect the cable from the daisy chain out connector on connector on the master controller to the daisy chain in connector of
the first slave board. Subsequent slave boards are connected from
the daisy chain out connector on one board to the daisy chain in on
the next. The master controller must then be configured to the system requirements. The display and status indicators of slave boards
are automatically disabled.
Caution: Do not use telephone jumper cables. These
have a “twist” in the connection and may damage the
controllers. Cables designed for use with the
DCT1000DC are available from Dwyer Instruments Inc.
1.2.5 Continuous Cycle Mode
The DCT1000DC has several 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
either placing a jumper between the high limit input and the common, or the manual override input to the common connection.
Controlling this cycle are three setup parameters: time off, time on,
and cycle delay. 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. The cycle delay allows a delay of up to 255
minutes to be programmed between the end of one complete
cleaning cycle and the beginning of the next. This allows additional
options for defining a cleaning profile.
E-97DC:e-97DC
7/15/09
8:51 AM
Page 5
1.3 DCP Installation
Caution: Prior to installing the DCP100A/200A please
review the operating specifications carefully.
Some operating systems, especially in pneumatic conveying applications, may see static pressure or vacuum conditions that exceed the capability of the DCP100A/200A
pressure module.
1.3.1 Location
The system should be located in an enclosure that meets relevant
safety standards and electrical codes. There are no other special
orientation requirements as the pressure module is not orientation
sensitive. Care should be observed when routing the air hoses to
ensure that any potential condensation or moisture will not drain
into the sensor. Where heavy condensation is present, a drip loop
or an in-line filter should be installed to ensure long term operation.
When inserting the module, the following procedure should be
adhered to insure proper installation:
• Examine the bottom of the pressure module and note the orientation of the connectors.
• Align the module so that these connectors match the connector
receptacles on the controller board.
• Orient the module with the four alignment pins over their respective mounting holes.
• Gently press the module into the connectors and snap the retaining clips on either end of the module into their slots.
• Always install and service this device with the power off and a
lockout installed if required. “Hot” plugging the pressure module
into an operating system may damage the system or cause the
calibration parameters to be erased.
When installing or removing the module make sure to orient the
module straight with board. Installing or removing the module at
any angle may break the alignment pins.
PRESSURE
MODULE
LOCKING PINS INSERTED
ALL THE WAY INTO THE
CHANNEL
ALIGNMENT
PINS
LOCKING PINS
INSERTED FROM
UNDERNEATH
MODULE ONLY
CIRCUIT
BOARD
INSERT LOCKING PINS UNTIL THEY SNAP FIRMLY IN PLACE
Figure 3
DCP Installation
1.3.2 Pressure Module Locking Pins
The DCP100A and DCP200A are supplied with locking pins to
secure the module. In normal operation these are not required
since the latching tabs are sufficient to secure the module even in
a high vibration environment. However if the unit is to be shipped
or used where severe mechanical shock could be encountered the
locking pins ensure the module will not snap out of the board.
To install the locking pins, from underneath the module insert one
locking pin behind each of the two latching tabs. Press these all the
way into the channel. The ends of the tabs will extend through the
slots at the top of these channels. Next insert the module in the
board as described above, making sure it is properly aligned and
snaps firmly in place. Press the exposed locking tabs down until
the tab is seated behind the latch in the board. To remove the module, slide the locking tabs up using a small screw driver then
remove the module as described above. See Figure 3.
1.3.3 Connecting DCP to Master Controller
The pressure module is attached to the Master Controller using
integral connectors on both units. The insertion ports for the pressure module are located in the upper left quadrant of the
DCT1000DC. The pressure module can be removed by compressing the retaining clips on each end of the module, then gently
pulling the module out of the controller board.
Caution: Do not force the module into the connectors.
Forcing the insertion may damage the connectors.
Properly aligned, the module should snap into place.
1.3.4 DCP Connections
When a pressure module is installed, the 4-20 mA process signal
and the alarm relay contacts are available. The 4-20 mA circuit is
isolated from ground and other signals. The alarm relay contacts
are isolated, normally open contacts. Pressure connections may
be made to the stepped hose barbs with either 1/8˝ (3.18 mm) or
3/16˝ (4.76 mm) I.D. tubing.
1.3.5 DCP Maintenance
The pressure module should require very little maintenance under
normal operational conditions. However, periodic calibration may
be desirable to assure accuracy of the readings. The module may
be removed and returned to the factory for calibration.
1.4 Alarm Mode Switch Connection
The auto alarm reset is controlled by the alarm mode switch connection. To enable the auto alarm reset the alarm mode input must
be connected to a common connection. A jumper may be used
when auto alarm reset is always active. A switch may be used if
there are times that the auto alarm reset must be disabled. The
switch must be an isolated contact and wired such that no connection is made between either of the wires and ground. See
Figure 2 Wiring Connections.
1.4.1 Alarm Reset Switch Connection
The alarm may be reset either by pressing the Alarm Reset button
on the control panel or by an external switch connected between
the alarm-reset terminal and one of the common terminals. The
alarm reset will only operate if the pressure module is installed and
the pressure has returned to a normal condition. See Figure 2
Wiring Connections.
1.4.2 Connecting the 4-20 mA Loop
The pressure module provides an isolated 4-20 mA output, which
may be used to remotely monitor the differential pressure across
the dust bags or cartridges. The connection is made on the master control module at the terminal block designated for this signal.
The connection is a 2-wire configuration with the option of using
either an external 15 to 35 VDC power source or using the internal
24 VDC source. See Figure 2 Wiring Connections.
5
E-97DC:e-97DC
7/15/09
8:51 AM
HIGH
Page 6
ALARM MAN DT ALARM
LOW
COM MODE OVR CLN RESET COM
LIMIT COM LIMIT
TB2
TB3
MODE SELECTION SWITCH
DAISY
CHAIN
OUT
4-20 MA
OUTPUT
DAISY
CHAIN
IN
4-20 MA
SOURCE
EXTERNAL
INTERNAL ALARM CONTACTS
TB4
REAR
SECTION
FRONT
SECTION
CONTINUOUS
OFF
ON DEMAND
TB5
MASTER CONTROLLER
(INTERNALLY CONNECTED)
(10 CHANNEL SHOWN)
TB1
L1
L2
SOL
COM
1
2
3
4
5
6
7
8
9
10
OUTPUTS (3A MAX)
(+)
L1 (-)
L2
LINE INPUT
1.4.3 Connecting the Alarm Relay
With the pressure module installed, a relay contact is provided for
controlling an external alarm. This relay is a single form-A contact.
It is activated when either the high alarm threshold is exceeded, or
the pressure drops below the low alarm threshold. The connection
is made at the two-pin connector TB5. See Figure 2 Wiring
Connections
1.5 Three Position Selection Switch Wiring
An optional mode selection switch is available with the weatherproof enclosure. With this switch the user may select either continuous cleaning, on-demand cleaning, or off. This switch is supplied
factory wired as shown in Figure 4. The switch has a front and rear
section. The front section, consisting of two independant contacts,
controls the power to the board. These contacts must be wired in
parallel as shown in the diagram. The rear section controls the
manual override, which when closed will force the system into a
continuousmuct be reconneccted, follow the wiring diagram.
Caution: Do not interconnect the low voltage manual
override leads with the power leads. This will destroy the
control board as well as pose a serious shock hazard
2.0 Programming the DCT1000DC
Master Controller
We’ve made it easy to navigate the DCT1000DC. Menu items can
be accessed simply by pressing the “SELECT” button. The menu
item that you are currently accessing is indicated by the illumination
of an LED. To change menu items, all you have to do is push “UP”
to increase a value or push “DOWN” to decrease a value. There are
no keystrokes that you need to memorize, special combinations, or
passwords that are required.
The master controller is equipped with an on board display and
programming information center. The controller will power-up with
the process indicator illuminated. If a pressure module is installed,
the display will indicate the measured pressure in inches of water
(w.c.); otherwise it will normally be blank.
6
Figure 4
Three Position Selection Switch Wiring
2.1 • Last Output
The Last Output setup selects the last channel to be activated.
When first selected, the display will flash the last output available in
the system. With single board installations, this will be the number
of channels installed, typically 6, 10 or 22. This value becomes
more important when multiple modules are installed. The last output value flashed will be the sum of all channels available in the system.
After the last available channel indication has completed, the currently programmed last channel value is displayed. This value may
be changed using the “UP” and “DOWN” buttons. The minimum
value is one while the maximum value is the maximum number of
installed channels, including all expansion modules.
The default value is the maximum number of channels. Pressing
“SELECT” will change the setup mode to Time Off Setup.
2.2 • Time Off (Sec.)
Time off defines the period of time between solenoid activations
when no channels are enabled. This may be set between one second and 255 seconds. The factory default is 10 seconds. The display will show the current time off setting when the time off setup
mode is entered. The value may be changed using the Up and
Down buttons. Pressing both “UP” and “DOWN” simultaneously
and holding for approximately four seconds will restore the default
value of 10.
2.3 • Time On (msec)
Time On Setup sets the solenoid on time. The display will indicate
the currently programmed time on setting. This is measured in milliseconds. Using the “UP” and “DOWN” buttons, the value may be
changed. The value may be set between 10 msec and 600 msec
in 10 msec increments. Pressing the “UP” and “DOWN” buttons
simultaneously for approximately four seconds will restore the factory default value of 100 msec. Pressing the “SELECT’ button will
advance the setup mode to the High Limit setup if the pressure
module is installed. With no pressure module, it will step to Cycle
Delay Setup.
E-97DC:e-97DC
7/15/09
8:51 AM
Page 7
2.4 • High Limit [Only available when DCP connected]
The High Limit Setup, available only with a pressure module
installed, sets the pressure at which the cleaning cycle will begin.
This value may be between zero and the pressure module full scale
pressure. Normally, the High Limit should be above the Low Limit.
If, however, the High Limit pressure is set below the Low Limit, the
cleaning cycle will begin when the High Limit is exceeded and stop
when the pressure falls below the High Limit. The Low Limit in this
case will have no effect. Pressing “SELECT” will change the system
to the Low Limit Setup mode.
2.5 • Low Limit [Only available when DCP installed]
The operation of the Low Limit, available only with a pressure module installed, is identical to the High Limit except this value sets the
pressure where the cleaning cycle will end. The upper settable value
is the calibration pressure of the pressure module and the lower limit
is zero. Pressing “SELECT” will change the system to the High
Alarm Setup mode.
2.6 • High Alarm [Only available when DCP installed]
The operation of the High Alarm Setup is identical to the High and
Low Limit Setup and is only available when a pressure module is
installed. The High Alarm default is 0. The upper settable value is the
full scale pressure of the pressure module and the lower limit is zero.
Pressing “SELECT” will change the system to the Low Alarm Setup
mode.
2.7 • Low Alarm [Only available when DCP installed]
The operation of the Low Alarm Setup is identical to the High and
Low Limit Setup. The Low Alarm default is 0. The upper settable
value is the full scale pressure of the pressure module and the lower
limit is zero. Pressing “SELECT” will change the system to the Cycle
Delay Setup mode.
2.8 • Cycle Delay (min)
The cycle delay inserts a delay time between the end of the last
channel and the beginning of the first channel. This may be set to
between zero and 255 minutes. The factory default is zero. Setting
the value to zero will disable the delay. Pressing “SELECT” will
change the system to the Down Time Cycles Setup mode.
2.9 • Down Time Cycles (min)
The Down Time Cycles setup will select a value between zero and
255 minutes. The factory default is one minute. Selecting zero will
disable the operation. When the down time cycles is activated by
shorting the down time cycles input to the common terminal, (see
figure 2) the system will enter a forced cleaning mode for the programmed duration. NOTE: The cycle delay, if one is programmed,
will not be inserted in the timing cycle. Pressing “SELECT” will
change the system to the Auto Alarm Reset Setup mode, if a pressure module is installed, or to Process when no pressure module is
available.
2.10 • Auto Alarm Reset (sec) [Only available when DCP
installed]
The Auto Alarm Reset Setup, available only when a pressure module is installed, allows the auto alarm reset time to be selected. This
value may be set between zero and 255 seconds. The factory
default value is five seconds. When the auto alarm reset is enabled
by shorting the auto alarm reset terminal to a common terminal,
(See Figure 1) the alarm will be reset after the pressure returns to the
normal range and the timeout has expired. Pressing “SELECT” will
change the system to Process mode.
3.0 Maintenance Support and
Diagnostics
We have also included a number of features that will aid maintenance personnel in diagnosing problems or verifying that the system
is operating.
3.1 Restoring Factory Defaults
The DCT1000DC has been programmed with factory default values
that meet most industry operating conditions. In the event that you
want to restore all of the parameters to the original factory default
values:
(1) Return the master controller to the process mode.
(2) Press and hold both “UP” and “DOWN” buttons.
The display will indicate a 10-second countdown, at the end of
which all parameters will be restored to factory defaults. Releasing
the switches prior to the end of the count will stop the process and
no modification will be made. Likewise, in each of the parameter
setup modes, pressing and holding the “UP” and “DOWN” buttons
simultaneously will reset the individual default value, leaving other
settings unchanged.
3.2 Power Indicator
A power on LED indicator is provided at the center left edge of the
board. This will be illuminated when the power supply is operating
properly. If the power LED is not illuminated, the primary power may
be off or there is a fault in the power circuit.
3.3 Active Channel Indicator
Located just above the solenoid terminations, you will find that each
channel is provided with an LED that is illuminated when the triac
switch is on. This allows a visual correlation between the channel
being pulsed and the operation of the solenoid.
3.4 Comm Check Indicator
The comm check indicator can be found in the upper right hand
corner of the slave and master controller board (just above the “out”
terminal, a telephone style connector). This indicator is used for two
purposes. First, on a master controller a brief flash once per second is produced to indicate that the system is operating. Second,
this indicator is used to show when the communication check operation is performed on slave boards. The master controller will check
each of the slave boards at a rate of about one inquiry per second,
starting with the slave board connected directly to the master controller and ending with the last slave board in the chain. The master controller will flash its Comm Check LED for about 250 msec
each time it makes a communication check. The external module
selected for test will also flash its Comm Check LED for about the
same time each time it is interrogated. Observing this test sequence
will indicate that the communication between boards is operational.
When a slave board powers up, the Comm Check LED will be illuminated continuously. It will be extinguished when the master controller has initialized its communication channel. This indicator then
shows that a master controller is operating and that each slave
board is responding properly on the daisy chain.
7
E-97DC:e-97DC
7/15/09
8:51 AM
Page 8
3.5 Error Codes
Error codes will be displayed on the three-digit display when certain faults occur. Most of these indicators are associated with the
daisy chain communication, but certain error codes pertain to single board operation also. These codes are:
Display
Meaning
Action Required
Err 1
This is a “watchdog” reset
that is enabled when the
master controller isn’t able
to cycle through its operation.
Make sure all electrical connections are appropriately
shielded so the master
controller is not disrupted
by noise.
Err 2
The pressure module has
failed to respond to the
request of the master
controller.
The master controller will
try to recover from the fault.
If unsuccessful, replace the
pressure module.
Communication error in
the daisy chain interface.
This will only appear
when the master controller is used in conjunction with a slave board.
Make sure the control cable
used in the daisy chain
interface is properly shielded from noise.
The master controller has
detected a change in
module configuration or a
fault in one of the modules.
Reinstall all modules in
accordance with the
instructions in the factory
IOM.
Err 3
Err 4
Err 5
• Run Mode: The term used when the timer board is firing the solenoids.
• Pressure Module: The pressure measurement subsystem that
includes the software and hardware for on-demand cleaning, alarms
and signal retransmission of the process variable (i.e., the differential
pressure across the dust bags).
• Master Controller: The primary timer board that contains all of the
major features, connections for external inputs and power to drive the
DCT1000DC Dust Collector Timer Controller system.
• Power DC Guard: A plastic shield that covers the output triacs and
other line voltage circuitry.
• Demand Cycle Mode: A process in which the run mode is enabled
through the on-board pressure module or an external switch.
• Euro Connector: A “caged” connection used to terminate solenoids, incoming power, or external switches on the DCT1000DC.
• Continuous Cycle Mode: A time based cycling mode dependent
on solenoid time on/off settings and time set between complete cycles.
Reinstall all modules.
If the fault described in
Contact factory if the prob“Err 4” is not corrected,
lem persists.
the master controller will
reconfigure the modules
that are responding properly and operate at a
degraded condition.
A message error affecting
the software of the master controller or one of its
modules.
Check the integrity of all
connecting cables used to
drive slave boards for additional solenoids. Also
check the electrical grounding of the system installation.
Err 7
Indicates that one of the
triac drivers are not functioning.
Return to factory for evaluation and repair.
Err 8
Internal Error.
Contact the factory.
Err 9
Unassigned message
code.
Contact the factory.
Err 6
4.0 Glossary of Terms
• Manual Override: Allows the user to override the DCT1000DC
remotely or from the master controller panel through use of a switch or
a wire jumper.
• Slave Board: A channel expander that is used in conjunction with
the master controller to accommodate additional solenoids on larger
dust collection systems. It can be recognized easily as it does not have
the on-board display panel or the power supply present. A master controller may also be used as a slave board.
Still need help? Please feel free to contact one of our customer service representatives or visit us on the web at
www.dwyer-inst.com. Thank you for choosing Dwyer Instruments, Inc.
8
©Copyright 2009 Dwyer Instruments, Inc.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Printed U.S.A. 7/09
Phone: 219/879-8000
Fax: 219/872-9057
FR#443123-05 Rev. 2
www.dwyer-inst.com
e-mail: [email protected]
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement