22
#$%&(
# * !($
<$%&
as switches that respond when the process value moves above or
]I
GPP
value. Relay functions, hysteresis and time delay settings are set
]?X*Z :P?:H(
menu.
L% K
Relay is activated when the measured value is less than
the setpoint.
Hysteresis
Time
Low Setpoint
Process
Relay energized
Relay de-energized
1
4 mg/l
Output (pulses per minute)
Ending
Point
Input (mg/l)
Starting
Point
0
20
40
60
80
100
Pulse
EIP( K
]?X*Z
"#&&
pulses per minute. Example usage would be to control solenoid
operated dosing pumps.
Z> ;#@A
the output will start pulsing in relation to the process value, the
maximum pulse endpoint and the programmed pulses/minute.
The pulse rate will increase as the process value decreases and
approaches the programmed endpoint. This functionality can be
used to precisely control the process.
Y The output will be 0 pulses/minute when the input value is
greater than 4 mg/l.
Y The output will be 35 pulses/minute when the input value is
3 mg/l.
Y The output will be 100 pulses/minute when the input value is
1 or less.
The starting point, endpoint and maximum pulse rate are select -
]?X*Z
Hysteresis
Time
High Setpoint
Process
H K
Relay is activated when the measured value is higher than
the setpoint.
Time
High Limit
Hysteresis
Hysteresis
Low Limit
Process
Window
D +%K
Relay is off within the window of two setpoints minus the
hysteresis. Relay is activated when the value is higher or lower
than the high and low setpoint.
+
