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RTT DESKTOP TEST SET– INSTRUCTION MANUAL
THE 269/269 PLUS MOTOR MANAGEMENT RELAY
CHAPTER 4: MOTOR MANAGEMENT & METERING
4.3
The 269/269 Plus Motor Management Relay
4.3.1
Overview
The 269/269Plus Relay has 3-phase current inputs but no voltage inputs feature. The Relay
provides 6 dedicated switch inputs designed for Dry contact connection only, and 4 output
relays. The 269/269Plus Relay monitors up to 10 RTD inputs, each RTD being field
programmable as a 3-wire type of 100 Platinum, 100 Nickel and 120 Nickel.
All features of the RTT, other than VT, can be applied to the 269/269Plus Relay. However
there are 4 unused input terminal wires, and a modification is required to the cable to fit
the 269/269Plus terminals.
Modification of the Product Cable
For the wires related to contact inputs and RTDs (16 in total), cut the wire lugs, and strip the
wire to make them fit the 269/269Plus terminals.
The wires to be cut are: R1+, R1-, R1C, R2+, R2-, R2C, R3+, R3-, R3C, DIC, DI6, DI5, DI4, DI3,
DI2 and DI1.
Unused Wires
For the unused wires (4 in total), it is recommended that user tape the lugs to ensure
isolation of the contacts so that no problems are caused by wires touching.
The unused wires are: DI8, DI7, V+, and V-.