GE Power Management
469 Motor Management Relay
4-21
4 SETPOINT PROGRAMMING
4.4 S3 DIGITAL INPUTS
4
4.4.16 DIGITAL INPUT FUNCTION: DIGITAL COUNTER
a) FUNCTION
Once the Digital Counter function is chosen for one of the assignable digital inputs, the setpoint messages
shown here will follow the assignment message. Each closure of the switch will be counted, by either adding or
decrementing the counter value. An alarm may be configured when a certain count is reached. The counter
value may be viewed in
A4 MAINTENANCE\GENERAL COUNTERS\DIGITAL COUNTER
.
To initialize the counter, program the counter value here and then change
S1 469 SETUP\CLEAR DATA\PRESET
DIGITAL COUNTER
to
"Yes"
.
b) EXAMPLE
A capacitive proximity probe may be used to sense non-magnetic units that are passing by on a conveyor,
glass bottles for instance. The probe could be powered from the +24 V from the input switch power supply. The
NPN transistor output could be taken to one of the assignable digital inputs configured as a counter.
COUNTER UNITS:
Units
Range: 6 alphanumeric characters
COUNTER PRESET
VALUE: 0
Range: 0 to 1000000000, step: 1
COUNTER TYPE:
Increment
Range: Increment, Decrement
COUNTER
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS:
Alarm
Range:
Alarm, Alarm & Auxiliary2, Alarm & Aux2 & Aux3,
Alarm & Auxiliary3, Auxiliary2, Aux2 & Aux3, Auxiliary3
COUNTER ALARM
LEVEL: 100
Range: 0 to 1000000000, step: 1
COUNTER ALARM
PICKUP: Over
Range: Over, Under
COUNTER ALARM
EVENTS: Off
Range: On, Off
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE