Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH
1.07. SITE CONDITIONS
A.
Existing Conditions: per Division 01 General Requirements.
1.08 MAINTENANCE
A.
Extra Materials: Furnish as specified below. Make interchangeable with and same
material and workmanship as corresponding original parts.
1. Provide specific operations and maintenance data in accordance with
Section 40 61 01.
2. Provide the following additional data and information
a. Configuration and programming manuals for each type of PLC
provided.
b. Configuration and programming manuals for each type of OIT
provided
PART 2-— PRODUCTS
2.01 GENERAL
A.
B.
D.
PLC hardware and programming software shall be by the same manufacturer.
All PLCs and OITs shall be housed in a new control panel as specified per Section
40 67 00, Control System Equipment Panels and Racks. Power provided to the
control panel shall be 120VAC, 60 Hz, single phase.
Minimum PLC input/output (I/O) requirements are indicated on the Drawings.
Provide at minimum an additional 20 percent active spare I/O wired to terminal
blocks.
PLC rack or mounting space provided shall accommodate at minimum 20 percent
spare slots for future expansion.
2.02 PROGRAMMABLE LOGIC CONTROLLERS
A.
The PLCs shall be microprocessor based devices and shall be furnished with power
supplies, processors, process input and output modules, communication cards as
required, mounted in the control panel.
1. Power supplies shall be sized to accommodate all analog signals including
all spares. The power supply shall accommodate the card's entire I/O
capacity (i.e. if 5 analog outputs is required, the power supply shall be sized
to handle the full 8 analog outputs of an 8 point card).
PROGRAMMABLE LOGIC CONTROLLERS
WOODARD & CURRAN 40 63 43-3
