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Manual 35086
ProTech-GII with Math Functions
Woodward
48
Refer to Functionality Chapter (Chapter 3) of this manual for all applicable relay output specifications and
related information.
Relay Outputs (Independent Trip Relay)
Each ProTech-GII “Independent Trip Relay” model has three independent modules (A, B, C), and each of
these modules has three solid-state relay outputs. Each of the three solid-state relays have normally-
open type contacts and are rated for 24 Vdc @ 1 A. Two of these relay outputs are dedicated as
redundant trip signal outputs, and the third is the Alarm relay. The Independent Trip Relay ProTech-GII
models are designed so the each set of trip relays drive one of three external independent trip solenoids,
typically used in 2oo3 voted trip block assemblies. Refer to Figure 2-16a for relay terminal location and
Figure 2-14b or 2-14c for wiring information.
Figure 2-14b. Example Trip Relay Wiring (per Module) (Independent Trip Relay) (Internal Supply)
Figure 2-14c. Example Trip Relay Wiring (per Module) (Independent Trip Relay) (External Supply)
Relay Outputs (Voted Trip Relay)
Each “Voted Trip Relay” ProTech-GII model has three independent modules (A, B, C), and each of these
modules has three solid-state relay outputs. Each of the three solid-state relays have normally-open type
contacts and are rated for 24 Vdc @ 1 A. Two of these relay outputs are dedicated as redundant trip
signal outputs to drive the ProTech’s 2-out-of-3 voted relay module, and the third output per module
dedicated as the module’s alarm relay output. See the “Monitor Alarms” section of this manual for
information on what events cause the Alarm relay output to change state.
24
25
26
27
28
29
30
Solid State Relay
(24V, 1A)
Solid State Relay
(24V, 1A)
P_GND
+24V_P (0.5A)
Interposing
Relay
Interposing
Relay
ProTech
Module
Released