ATI
Q46H/65 Residual Chlorine Dioxide System
Part 6
– Configuration
45
O&M Manual
Rev-J (11/18)
Figure 26 is a visual description of a typical alarm relay application.
If Relay B Mode is set to
CON
(see
Relay B Mode
), then Relay B will
function identically to Relay A. Relay B settings appear in the CONFIG
menu list automatically.
If Relay C Mode is set to
CON
(see
Relay C Mode
), then Relay C will
function identically to Relay A. Relay C settings appear in the CONFIG
menu list automatically
.
If Relay D,E, or F Mode is set to
CON
(see
Relay D,E,F Modes
), then
the Relay will function identically to Relay A. Relay settings appear
in the CONFIG menu list automatically.
6.26 Diagnostics Menu [DIAG]
The diagnostics menu contains all of the user settings that are specific to the system diagnostic
functions, as well as functions that aid in troubleshooting application problems.
Set Hold
The Set Hold function locks the current loop output values on the present
process value, and halts operation of the PID controller. This function
can be used prior to calibration, or when removing the sensor from the
process, to hold the output in a known state. Once HOLD is released,
the outputs return to their normal state of following the process input.
Setpoint
A-HI: 1.000 ppm
Setpoint A-LO: .500 ppm
Hyst
A-HI: 1.050
Hyst
A-LO: .0.050
Delay
A-HI: 000
Delay
A-LO: 000
When value rises to
≥
1.000 ppm, relay closes,
until value falls back to < 0.950 ppm.
Settings:
When value falls to < 0.500 ppm, relay closes, until
rises back to > 0.550 ppm.
When value rises to
≥
0.500 ppm, relay closes, until
value falls back to < 0.450 ppm.
When value falls to < 1.000 ppm, relay closes,
until rises back to > 1.050 ppm.
B Setpoint
B Hysteresis
B Delay
B Phasing
}
}
1.000 ppm
0.950 ppm
0.550 ppm
0.500 ppm
PHASE: HI
ON
HYST - HI
HYST - LO
ON
X
X
OFF
}
}
1.050 ppm
1.000 ppm
0.500 ppm
0.450 ppm
PHASE: LO
OFF
HYST - HI
HYST - LO
OFF
X
X
ON
Figure 26 - Alarm Relay Example
C Setpoint
C Hysteresis
C Delay
C Phasing
D,E,FSetpoint
D,E,FHyster
D,E,F Delay
D,E,F Phasing
