Delay Timer Fcm - ABB 800xA Operation

Delay Timer FCM

counting. You can compare the count to two configured reference values, or you can
initialize the count to a configured value.
TIME UNITS (SECONDS) Field
This field provides a means to scale the result into the desired time units. The result
is usually calculated in seconds. If this is appropriate for the application, leave this
field at its default value, 1. If another time unit is required, enter the value in this
field. The internal result value (in milliseconds) is converted to seconds and then
divided by the entry to become the final result of the FCM. For example, to specify
minutes, enter 60. To specify hours, enter 3600. Valid entry is a decimal number
greater than 0.
LOWER TIME LIMIT Field
This field specifies a reference value that the count is compared to. When the count
is less than the value in this field, the data base flag TIM_EXP1 is 0. When the
count is greater than or equal to the value in this field, TIM_EXP1 is set to 1. Valid
entry is a decimal number greater than or equal to 0.
HIGHER TIME LIMIT Field
This field specifies a reference value that the count is compared to. When the count
is less than the value in this field, the data base flag TIM_EXP2 is 0. When the
count is greater than or equal to the value in this field, TIM_EXP2 is set to 1. When
TIM_EXP2 is 1, the count is frozen at its current value and does not increment on
subsequent loop scans. Valid entry is a decimal number greater than or equal to 0.
Delay Timer FCM
This is a delay timer whose result is ON or OFF. There is one input to the Delay
Timer FCM whose value is also ON or OFF. Two timers are present in the
algorithm. One is related to the time that the input is in the ON state. The other is
related to the time the input is in the OFF state.
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Appendix A Runtime Templates
3BUR002418-600 A