Bid Package 08 North Well Field - Garney Construction

. Memory battery backup shall be capable of 14 days memory retention after the
"Battery Low" indicating LED is on.
6. Plug-in card design to allow quick field replacement of fault devices.
a. Provide unit designed for field replacement and expansion of memory without
requiring rewiring or use of special tools.
7. 100 percent minimum spare useable memory capacity after all required programming is
in place and operating.
8. Capable of executing all control functions required by the Contract Drawings including
digital and analog loops.
9. Built-in three-mode (proportional-integral-derivative) control capabilities.
a. As directly selectable algorithms requiring no user knowledge of programming
languages.
10. On line reconfigurable.
11. Lighted status indicators for "RUN" and "FAILURE."
12. Capable of manual or automatic control mode transfer from the HMI system or from
within the control strategy. Transfer shall be bumpless and balanceless.
13. Modbus ports shall be provided for RS485 data highway associated with Multilin relays.
See Plans for more details.
B. Input/Output (I/O) Modules
1. Provide plug-in modular-type I/O racks in each PLC enclosures if required, with cables to
connect to all other required PLC system components.
2. Provide I/O system with:
a. I/O solid state boards with status lights indicating I/O status and board failure.
b. Electric isolation between logic and field device.
c. Individually fused outputs with blown fuses indication.
d. Interchangeable boards for similar I/O type to allow substitution of operating
boards for failed units by the operator.
e. Capability of withstanding low energy common mode transient to 1500 V without
failure.
f. Incorporate noise suppression design.
g. Capable of meeting or exceeding surge-withstand capability tests, per ANSI/IEEE
C37.90.1.
h. Capable of meeting or exceeding electrical noise tests, NEMA ICS1-109.60-109.66.
i. Capable of being removed and inserted into the I/O rack under power, without
affecting any other I/O modules in the rack.
3. Discrete I/O Modules:
a. Interface to ON/OFF devices
b. I/O status indicator module front
c. Voltage rating to match circuit voltage
d. Output module current rating:
1) Match maximum circuit current draw
2) Minimum 1.5 A/point for 120 V AC applications
e. Isolated modules for applications where one module interfaces with devices
utilizing different sources of power.
f. Individually fused with blown fuse indication.
Supervisory Control and Data Acquisition (SCADA) System 40 90 02-16
CMD11269 – Ward County Transmission System Expansion – Contract C – Above Slab TPS, OPS, and WPS