Toshiba GR 200 Series, Instruction Manual

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6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 931 -
Typical pick up level
Guaranteed pick up level
Guaranteed drop off level
Operating area
Intermediate area
Non-operating area
Input voltage
Figure 5.4-2 Operating area in the variable type
Note: In practice, the pick-up voltages depend on respective binary circuits physically
This means the characteristics are not affected by the ambient conditions and the
applied voltages.
(ii)
Comparison feature for contact chatter
The input circuit incorporates a comparison feature that protects against contact chatter and
this feature is configured using the setting [
CMP_NUM
]. Figure 5.4-3 illustrates this feature;
the comparison feature removes contact chatter. The period ‘
t
’ applied for the removal of contact
chatter can be configured by setting a value for [
CMP_NUM
]. The formula for the calculation
of ‘t’ is,
[
CPM_NUM
]×
1
System Frequency×12
The setting [
CMP_NUM
] is provided for all binary input circuits.
Figure 5.4-3 Chattering countermeasure (e.g. [CMP_NUM] = 4)
Actual input signal
Imported signal by
binary input circuit
t