ATI
Q46H/63 Combined Chlorine System
Part 6 – Configuration
48
O&M Manual
Rev-K (11/18)
If Relay A Mode is set to Alarm Mode,
AL
, then the following settings will
appear in the Config Menu list automatically. In this mode, two setpoints
can be selected on the same relay, to create an alarm band. Phase HI
selection causes the relay to energize outside of the band, and Phase
LO causes the relay to energize inside of the band. This feature enables
one relay to be used as a control relay while the other is used as a HI-LO
Alarm relay at the same time. Setpoint A-LO must be set lower than
Setpoint A-HI. When AL mode is first selected, Setpoint A-LO is
defaulted to 0.
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.
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.
Setpnt A-HI
Hyst A-HI
Delay A-HI
Setpnt A-LO
Hyst A-LO
Delay A-LO
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
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
