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5.2 WWTP Buildings/Utilities
5.2.1 Power Supply
A power monitor has been installed in the main power distribution panel to ensure proper power
and phase rotation is delivered to the system.
Alarms
Alarm
Alarm Description
ESA-8201
Emergency Stop Alarm
PWR-FAIL
Power Failure
PLC FLT
PLC Fault Detected
PWR FLT
Phase Monitor Fault
5.2.2 E-Stop
Emergency stop buttons are located:
5.2.3 Building Temperature Control
The electric heaters respond to the temperature set point set on the individual heater TSL
temperature switches. If the building temperature falls below the temperature switch settings,
electric heaters will turn on.
5.2.3.1 Logic
TAG
Description
Building
H-7911
Heater
Building
H-7912
Heater
Building
H-7941
Heater
Building
H-7961
Heater
Building
H-7962
Heater
Building
H-7963
Heater
newterra O&M Manual
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Actuation Control
ESA-8201 = Active
JA-8201 = Active
On the Main Control Panel in each of the Screen Buildings
On the Control Panel installed in each process train
On the Main Control Panel in the Sludge Building
Main Control Panel in each of the Receiving Stations
There is an E-Stop PLC alarm if pressed.
Control Logic
Always on internally controlled
Always on internally controlled
Always on internally controlled
Always on internally controlled
Always on internally controlled
Always on internally controlled
1291 California Avenue, Brockville, ON K6V 5W3
(800) 420-4056 / www.newterra.com
Self
Delay
Resetting
(Y)
Immediate
Y
Immediate
Y
Immediate
Y
Immediate
Y
Output
Type
Direct (not PLC controled)
Direct (not PLC controled)
Direct (not PLC controled)
Direct (not PLC controled)
Direct (not PLC controled)
Direct (not PLC controled)
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