GE Multilin G650, Руководство пользователя

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5-106 G650 Generator Protection & Control System GEK-113285A
5.6 INPUTS/OUTPUTS 5 SETTINGS
5
5.6.3 INPUTS
5.6.3.1 INPUT SETTINGS DESCRIPTION
Input Activation Voltage Threshold:
The range of this value goes from 20 to 230 volts. There is a single setting for all
inputs in the same group (inputs sharing the same common). In mixed and supervision boards there are two groups of
inputs, called A and B., in 32DI board there are four groups of 8 inputs each.
Debounce Time:
This is the debounce time set for inputs (1 to 50 ms). The debounce time is the time window for input
filtering. If an input suffers a change of level that lasts less than this set time, the change will not be considered. There is a
single setting for all inputs in the same group.
Input Type:
Type of logic associated to the physical input. Possible settings are, positive and negative.
Positive and Negative settings correspond to signals that are activated or deactivated with the input level, considering the
delay setting. Positive-edge, and Negative-edge settings correspond to signals that are activated with the change of the
input signal; in this case, the Delay Input Time will not be considered, only the Debounce Time; this edge signals are
deactivated automatically after one PLC scan cycle. Figure 5–27: shows the types of signals associated to the different
input configuration types.
Delay Input Time:
This is the delay applied to the input signal; the default value is zero, meaning no delay; the setting
range is 0 to 60000 milliseconds (1 minute). This setting is used in slow switchgear applications.
This is not a grouped setting; there is a different setting for each input. It is important to distinguish between this
delay
input time
and the
debounce time
used for filtering undesired transients in the input signal. The Debounce time is always
added to the delay input time.
Figure 5–27: INPUT LOGIC TYPES