Applications
Table 2-2. Input Command Priority Table for “3+1” Mode
Input Command*
Frequency
(1 for uncoded, 2 for coded)
Receiver Output
No input
Pilot
None
No input
F1
Test
A F3
A
B F5
B
A&B F2,
F6
D
C F7
C
D F2,
F6
D
C&D F2,
F6
D
A&D F2,
F6
D
B&C F2,
F6
D
A&C F2,
F6
D
B&D F2,
F6
D
A&B&C F2,
F6
D
A&B&D F2,
F6
D
A&C&D F2,
F6
D
B&C&D F2,
F6
D
A&B&C&D F2,
F6
D
* A, B, C, and D correspond to Trip Inputs/Outputs 1, 2, 3 and 4 on the PLC-TT I/O adapter module.
Table 2-3. Preset Frequencies
F number
Frequency
Notes
F1
427Hz
Test signal frequency
F2 640Hz
Trip
signal
frequency
F3 853Hz
Trip
signal
frequency
F4 1067Hz
Trip
signal
frequency
F5 1280Hz
Trip
signal
frequency
F6 1493Hz
Trip
signal
frequency
F7 1707Hz
Trip
signal
frequency
F8 1920Hz
Trip
signal
frequency
2.2.2
TYPICAL APPLICATIONS
Figure 2-3a shows a typical PLC-TT application using four inputs and four outputs. Two input
modules are also available. Figure 2-3b shows a typical PLC-TT application consisting of 2 I/Os, each
with four inputs and four outputs. The four inputs can be AND’ed or OR’ed in various combinations
using NMS. In both examples, the outputs can be inverted or non-inverted.
RFL 9508D UCC
RFL Electronics Inc.
July 1, 2007
2-6
(973) 334-3100