C1300
Advanced circular chart recorder
3 Configuration
48
IM/C1300 Rev. J
Example
– Reservoir level monitoring using:
process variable 1 with an engineering range of 0 to 100 feet
logic equation 1 result assigned to relay 1.1 that is used to operate the control valve.
Equation 1.1
Equation 1.2
Equation 1.3
Equation 1.4
Equation 1.5
Equation 1.6
Equation 1.7
Entering the Logic Equation
Alarm A1
AND
Alarm C1
OR
Alarm B1
OR
Digin Main 1
Alarm A1
set to high process trip at 50 ft
Alarm B1
set to high process trip at 80 ft
Alarm C1
set to fast rate trip at 10% of
range per hour (10 ft/hr)
Manual override switch
:
Connected to digital input 1.1
Digital input number
Module number
Negative polarity
Volt-free switching
Input Elements
Flow Conditions
Close reservoir control valve if:
Reservoir level >50 feet AND
rate of change >10 ft/hr
OR
Reservoir level >80 ft
OR
Manual override switch operated
50
feet
80
feet
Control
Valve
Level Sensor
Relay Output
Manual Overide
Alarm B1
Alarm A1
Time
Level
Alarm C1
Rate of
change
> 10ft/h