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CONTRÔLEUR À MINUTERIE DCT1000 POUR COLLECTEUR DE POUSSIÈRE (SUITE)
E-97 DCT iom
12/29/04
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 mod-
ule 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 pro-
grammed 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 pres-
sure 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 mod-
ule 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.
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Dépoussiéreurs DCM3000 à 50000 - Manuel d'instruction
3.0 Maintenance Support and
Diagnostics
We have also included a number of features that will aid mainte-
nance personnel in diagnosing problems or verifying that the system
is operating.
3.1 Restoring Factory Defaults
The DCT1000 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 sec-
ond is produced to indicate that the system is operating. Second,
this indicator is used to show when the communication check oper-
ation 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 con-
troller and ending with the last slave board in the chain. The mas-
ter 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 illu-
minated continuously. It will be extinguished when the master con-
troller 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.
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