S3 Digital Inputs; Description - GE 469 Instruction Manual

S3 Digital Inputs

Description

GE Multilin
STARTER STATUS
SWITCH INPUT
(Setpoint = 'Starter Auxiliary A')
REDUCED VOLTAGE STARTER AUXILIARY 'A' STATUS INPUT
STARTER STATUS
SWITCH INPUT
(Setpoint = 'Starter Auxiliary B')
REDUCED VOLTAGE STARTER AUXILIARY 'B' STATUS INPUT
FIGURE 5–3: Reduced Voltage Starter Inputs
S3 Digital Inputs
a) Overview
The 469 relay has nine (9) digital inputs. Five of the digital inputs have been pre-
assigned as switches having a specific function. Four of the five pre-assigned digital
inputs are always functional and do not have any setpoint messages associated with
them. The fifth, Starter Status, may be configured for either an 'a' or 'b' auxiliary
contact. The remaining four digital inputs are assignable; that is to say, the function
that the input is used for may be chosen from one of a number of different
functions. Some of those functions are very specific, others may be programmed to
adapt to the user requirements. If the Two-Speed Motor feature is enabled,
Assignable Input 4 will be dedicated as the Two-Speed Motor Monitor.
b) Access Switch
Terminals C1 and C2 must be shorted to allow changing of any setpoint values. This
safeguard is in addition to the setpoint passcode feature, which functions
independently (see Passcode on page 5–7).
c) Test Switch
Once the 469 is in service, it may be tested from time to time as part of a regular
maintenance schedule. The relay will have accumulated statistical information
relating historically to starter and motor operation. This information includes: last
trip data, demand data (if the metering features are in use), MWh and Mvarh
metering, RTD maximums, the event record, analog input minimums and
maximums, number of motor trips, number of trips by type, total motor running
hours, learned parameters, number of starter operations, number of motor starts,
number of emergency restarts, and the digital counter. Shorting the 469 Test input
http://www.GEindustrial.com/multilin
REDUCED VOLTAGE
AUXILIARY 'a'
D16
D23
D16
REDUCED VOLTAGE
AUXILIARY 'b'
FULL VOLTAGE
AUXILIARY 'b'
D23
469
Motor Management Relay
FULL VOLTAGE
AUXILIARY 'a'
808723A1.CDR
5–19