Module Descriptions, RFL 9508D Digital Section
8.4
PLC TRANSFER TRIP MODULE
8.4.1
DESCRIPTION
The PLC Transfer Trip Module is a bi-directional module designed for use in RFL 9508D chassis. It
transmits and receives data via the T1/E1 serial link and generates and receives trip commands via an
I/O adapter module. The PLC Transfer Trip Module can support up to four bi-directional transfer trip
functions between two 9508D terminals, or can support DCB (Directional Comparison Blocking) in
addition to two transfer trip functions. These modules can operate point to point between two 9508D
terminal nodes in a network. The terminal nodes can be configured as point-to-point or drop and insert
terminals and can be installed at different locations in the network either at adjacent or nonadjacent
nodes. This module has eight LEDs on the front to indicate the condition of the trip inputs and outputs.
Figure 8-11. Edge View of PLC Transfer Trip Module Showing Functions of Switches and LEDs
DS9
J1
SW2
LEDs
SW1
ALARM AND PROGRAMMING LED
RS-232 PORT FOR PC OR LAPTOP
DISABLE SWITCH
FUNCTION TRIP 4 RECEIVED LED
FUNCTION TRIP 3 RECEIVED LED
FUNCTION TRIP 2 RECEIVED LED
FUNCTION TRIP 1 RECEIVED LED
FUNCTION TRIP 4 TRANSMITTED LED
FUNCTION TRIP 3 TRANSMITTED LED
FUNCTION TRIP 2 TRANSMITTED LED
FUNCTION TRIP 1 TRANSMITTED LED
SETS SCB ADDRESS AND
LOCAL OR REMOTE MODE
NOTE: Refer to PLC Transfer Trip Product Information sheet for additional information.
RFL 9508D UCC
RFL Electronics Inc.
March 11, 2010
8-26
(973) 334-3100