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CONTRÔLEUR À MINUTERIE DCT1000 POUR COLLECTEUR DE POUSSIÈRE (SUITE)
E-97 DCT iom
12/29/04
1.3 DCP Installation
Caution: Prior to installing the DCP100A/200A please
review the operating specifications carefully.
Some operating systems, especially in pneumatic con-
veying applications, may see static pressure or vacuum
conditions that exceed the capability of the DCP100A/200A pres-
sure module. For these conditions there are a number of alternate
Dwyer pressure products that can be used to meet your applica-
tion requirements, all of which can be terminated to the Dwyer
DCT1000 Dust Collector Timer Controller. For more information on
these and other Dwyer products, please call us at (219) 879-8000,
or visit us on the web at www.dwyer-inst.com or www.dust-con-
trols.com.
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.
ALIGNMENT
PINS
1.3.2 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 pres-
sure module are located in the upper left quadrant of the DCT1000
Master Controller. The pressure module can be removed by com-
pressing the retaining clips on each end of the module, then gently
pulling the module out of the master controller board.
When inserting the module, the following procedure should be
adhered to insure proper installation:
• Examine the bottom of the pressure module and note the orien-
tation 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 respec-
tive mounting holes.
• Gently press the module into the connectors and snap the retain-
ing 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 cal-
ibration 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.
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PRESSURE
MODULE
LOCKING PINS INSERTED
ALL THE WAY INTO THE
CHANNEL
LOCKING PINS
INSERTED FROM
UNDERNEATH
MODULE ONLY
CIRCUIT
BOARD
INSERT LOCKING PINS UNTIL THEY SNAP FIRMLY IN PLACE
Figure 3
DCP Installation
Dépoussiéreurs DCM3000 à 50000 - Manuel d'instruction
1.3.3 Pressure Model 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
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.
1.3.4 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˝ or 3/16˝ I.D.
tubing.
Caution: Do not force the module into the connectors.
Forcing the insertion may damage the connectors.
Properly aligned, the module should snap into place.
1.3.5 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 con-
nection. 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 con-
nection 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 mas-
ter 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.
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