CAMCORP CAM-AIRO Vertical Cartridge - Manual (Page 32)

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3.6 High Alarm Setup
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 6.0
″
w.c. [1.49
kPa]. 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 Low Alarm Setup mode.
3.7 Low Alarm Setup
The operation of the Low Alarm Setup is identical to the High
and Low Limit Setup. The Low Alarm default is 1.0
″
w.c.
[0.25 kPa]. The upper settable value is the calibration pres-
sure of the pressure module and the lower limit is zero.
Pressing Select will change the system to the Cycle Delay
Setup mode.
3.8 Cycle Delay Setup
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.
3.9 Down Time Cycles Setup
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 com-
mon terminal, the system will enter a forced cleaning mode
for the programmed duration. The cycle delay, if one is pro-
grammed, 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.
3.10 Auto Alarm Reset Setup
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 sec-
onds. 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, 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.
3.11 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 indi-
vidual default value, leaving other settings unchanged.
4.0 Maintenance Support and
Diagnostics
We’ve also included a number of features that will aid main-
tenance personnel in diagnosing problems or verifying that
the system is operating.
4.1 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 cir-
cuit.
4.2 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.
4.3 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 con-
troller 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 per-
formed 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 communica-
tion 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 indi-
cate 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 operat-
ing and that each slave board is responding properly on the
daisy chain.