
ATI
Q46P pH System
Part 6 – Calibration
46
O&M Manual
Rev-F (8/17)
The
FAIL
setting enables the fail alarm mode for Relay A. Relay A will
then trip on any condition that causes the FAIL icon to be displayed on
the LCD. Using this mode allows the User to send alarm indications to
other remote devices.
The
AL
setting allows two setpoints to be selected for the same relay,
producing a HI-LO alarm band. In this mode, Relay A will trip inside or
outside of the band, depending upon the Phase selected. See Figure 34
for further details.
*Relay B Mode
Relay B can be used in a number of ways: as a setpoint control, as an
alarm, or as an auto-cleaner. The four settings for Relay B Mode are
CON,
FAIL, CLn1, and CLn2
.
The
CON
setting enables normal setpoint operation for Relay B. Relay B
then operates identically to Relay A, with settings for setpoint, hysteresis,
delay and phasing appearing in the CONFIG menu automatically. See
Figure 33 for details.
The
FAIL
setting enables the fail alarm mode for Relay B. Relay B will
then trip on any condition that causes the FAIL icon to be displayed on
the LCD. Using this mode allows the User to send alarm indications to
other remote devices. Figure 34 for details.
Relay B in Auto-Clean Monitors is used to activate the air-wash cleaning
system that keeps the sensor operating properly. This relay should
normally be set to
CLn1 1
Mode for normal cleaning. Do not change the
factory setting for
this relay without first consulting ATI or your ATI
representative
Relay C Mode
Relay B and C can be used in two ways: as a setpoint control, or as an
alarm. The two settings for Relay B Mode are
CON
and
FAIL
.
The
CON
setting enables normal setpoint operation for Relay B/C.
Relay B/C then operates identically to Relay A, with settings for setpoint,
hysteresis, delay and phasing appearing in the CONFIG menu
automatically. See Figure 33 for details.
The
FAIL
setting enables the fail alarm mode for Relay B/C. Relay B/C
will then trip on any condition that causes the FAIL icon to be displayed
on the LCD. Note that the Relay C indicator shows up only on the lower
screen of the display next to the temperature reading. This is because
the default setting for relay C is the
FAIL
setting. Using this mode allows
the User to send alarm indications to other remote devices. See Figure
34 for details.
*Relay D Mode
OPTIONAL.
Relays D,E,and F can be used in two ways: as a setpoint
*Relay E Mode
control, or as an alarm. The two settings for Relay B Mode are
CON
and
*Relay F Mode
FAIL
.
The
CON
setting enables normal setpoint operation for Relay B. Relay B
then operates identically to Relay A, with settings for setpoint, hysteresis,
delay and phasing appearing in the CONFIG menu automatically. See
Figure 33 for details.