Thermo Scientific APEX 100, Руководство пользователя, Страница: 139 / 442

Thermo Scientific APEX User’s Guide
Page 139
2) Press the Go button and an input screen appears.
Reject 1 Confirm Time
3)
Key in an appropriate time window (in seconds and hundredths of a second) in which
the reject must occur. Typically the calibration function will set the appropriate value
and no manual adjustment is necessary.
4)
Press the Go button to save your setting and exit the menu.
Manually Setting the Timing for a Reject-1 Complete
This function is normally used in gravity-feed and pipeline applications, and is used to
confirm that the gate (the reject device) has properly completed both phases (the
“open” and “closed” phases) of the reject cycle. This capability is useful because it allows
you to hardwire the detector to shut down the flow of product, and alert you when a
gate failure occurs—for example, because the air-supply to the gate has failed or the
gate has stuck half-way open, which may occur when product builds up on the gate or
the surrounding duct work.
This function allows you to fine tune the reject-confirmation time by keying in a time (a
time window) in which the reject must occur and, thus, be confirmed. If a reject does
not occur within this time window, the detector issues a warning, alarm, or fault that
notifies you an error has occurred during the reject process.
Reject 1 Complete Time
A Gate-Open and Gate-Closed Detector Must Be Installed
For this function to work, you must have a gate-open and gate-closed detector installed
on the gate (or diverter valve), and this must be hardwired to the detector. The gate
detector works by confirming that the gate is indeed in one of two positions—the open
or closed position (not stuck halfway open or closed). During a normal reject cycle, the
gate first opens, then closes—actions that the reject-complete function verifies has
occurred. However, if the gate gets stuck half-way open or closed during the reject