ATI
Q46C2 2Electode Conductivity System
Part 5
– Configuration
34
O&M Manual
Rev-H (6/19)
Relay A Mode
Relay A can be used in three different ways: as a setpoint control, as a fail
alarm, or as a HI-LO alarm band. The three settings for Rly A Mode are
CON
,
FAIL
and
AL
.
The
CON
setting enables normal control operation for Relay A, with
settings for setpoint, hysteresis, delay and phasing appearing in the
CONFIG menu automatically. See Figure 20 for further details.
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 21
for further details
.
Relay B Mode
Relay B and C can be used in two ways: as a setpoint control, or as an
Relay C Mode
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 20 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 21 for
details.
*Relay D Mode
OPTIONAL.
RelaysD,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 20 for details.
Temp Units
This function sets the display units for temperature measurement. Press
ENTER to initiate user entry mode, and the entire value will flash. Use the
UP arrow key to modify the desired display value. The choices are
°F
and
°C
.Press ENTER to store the new value.
