ProTechTPS Total Protection System
Manual 26710V1
58
Woodward
ProTech with Voted Trip Relay Output
ProTechTPS “Voted Trip Relay” models consist of three independent modules
that each accept one speed input and 10 configurable analog/discrete inputs,
and whose trip output commands are then voted in a 2-out-of-3 (2oo3) fashion to
create the 2oo3 trip output command. Two redundant “Form-C” 2oo3 voted
relays are used in these models providing four isolated relay output signals with
normally open and normally closed contacts.
Figure 3-6. Basic Functional Overview of Voted Trip Relay Models
2-out-
of-3
Voted
Relays
Module
B
Module
C
2 “Form-C”
Trip Relays
Speed Input
Configurable
Analog/Discrete
Inputs
Module
A
Speed Input
Configurable
Analog/Discrete
Inputs
Speed Input
Configurable
Analog/Discrete
Inputs
