Chemtrac Systems, Inc.
Page 27
ALARM function from the MAIN screen, the alarm beep will switch to low level. If
any new alarms occur, the high-level beep will be generated to notify the user of
the new alarm.
}
Special Function Key – The audible alarm can be toggled ON and OFF by
pressing both q and p keys. The Ù symbol will only appear when the audible
alarm is enabled. Once the audible alarm is disabled, the only way to enable is
to toggle with this Special Function key.
When any alarm is triggered, a +24 Vdc signal will be present on the Monitor’s
alarm terminals 13 (+) and 14 (-). This signal can be connected to a
SCADA/DCS system to alert the operators to an Alarm condition. In lieu of a
+24VDC signal, an optional solid-state relay output is available (must be
specified with order).
After being properly adjusted by the operator to match up with the upper and
lower Streaming Current readings that typically correlate to the acceptable
window of process performance, the Streaming Current Value (SCV) Hi and Lo
Alarms alert the operator as to whether the streaming current value has
exceeded acceptable limits. A Lo Alarm will signify an underfeed of chemical
(even possible loss of chemical feed) and a Hi Alarm will signify an overfeed.
3.3.4 SCC3500XRD Pump Control (1) Menu
From the MAIN screen, press CTRL function key, the PUMP CONTROL (1) Menu
screen will display. There are PUMP CONTROL (1), PUMP CONTROL (2), and FLOW
CONTROL (3) menus under CTRL function key. Use up or down arrow key to navigate
between menus. Within the PUMP CONTROL (1) Menu screen, the PID tuning
parameters can be adjusted.
u
v
w
x |
y
z
{
Definitions
u Pump Ctrl: The Controller’s pump output control has two mode of operation;
AUTO or Manual. In AUTO mode, the pump output percent will increased or
decreased automatically in response to deviations from the setpoint. In MAN
mode, the pump output percent can be increased or decreased manually by
setting the Man Output. The two mode can be toggle by pressing the p or q
key.
v Man Output: In MAN mode, the pump output percent % can be increased or
decreased by pressing the p or q key. The Man Output value can be changed
from 0 to 100% at 0.1% increment. This parameter is saved in non-volatile
memory. When running in Automatic mode, the Man Output setting is ignored.
However, when switching from AUTO to MAN, it is important to understand that
the Pump Output value will be changing from the value it was in MAN mode.
To Next Page
Loading...
Need help?
General