SPTPS13
The SPTPS13 module represents the latest generation of speed detection and turbine
protection modules for the Symphony Plus Harmony Rack platform. This module has been
designed to replace and consolidate all existing older Harmony Rack products of this type
(SPTPS02, SPFCS01 and SPTSA01). As a result of its multi-function purpose, the SPTPS13 is
compatible with several termination units (TPTU02 and NTDI01, NTDI02) and can interface
to several Harmony function codes:
a. FC 145/79/83/84 for TPS02 replacement applications
b. FC 145 for FCS01 replacement applications
c. FC 103 for TSA01 replacement applications
In addition, the SPTPS13 makes use of three small adapter boards (TPS, FCS, TSA) which can
be used to configure the functionality and the I/O channel mapping of the SPTPS13 to match
those of the three modules being replaced. Therefore, the SPTPS13 has three different
modes of operation, depending on what adapter board is plugged on to the motherboard.
TPS Mode
Three SPTPS13 modules plug to a single TPSTU02 termination unit using standard NKTU01
cables. All electronic overspeed related protective functions are monitored and initiated in
the modules and termination unit. These protective functions are independent of the
Symphony Plus Bridge Controller (BRC) and data highways. Triple redundant inputs, 2-of-3-
protection logic, and on-line testing capability are used to provide high reliability. Each of
the protective functions utilizes relays on the termination unit to control activation of the
function, three of which have four relay outputs for use with hydraulic manifolds such as
those provided by ABB, which use “1-of-2-twice” logic that allows for on-line testing of the
manifolds. The module utilizes an on-board microprocessor and memory to process input
data, control outputs, and communicate with the ABB Symphony Plus control system. The
module provides the following protective functions:
• OverSpeed Protection (OSP): Typically activates the Overspeed Manifold that shuts the
Governor and Intercept Valves to control an overspeed situation without having to initiate
