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(2) Electrical specifications of input circuit
Item
Supply line voltage
Input current
Turn ON response time
Turn OFF response time
Isolation
Polarity
Notes:
1)
Supply line voltage is the voltage on the printed board excluding voltage drop of
cables, etc.
2)
Each response time is the time during which an input signal passes through the
input filter circuit. This filter cuts chattering of 5 ms or less. Actual response
time includes the system scanning time.
3)
This input is not isolated. Use it exclusively for the input of the operation &
display unit and operation box installed nearby (max. cable length 5 m).
(3)
The receiver circuit for these signals are as follows:
Operation switch
Table 4.5.7
Specification
+24 VDC ± 1.0 V
approx. 7 mA
5 ~ 11 msec
5 ~ 11 msec
Not provided
Provided (minus(–) common)
+24 V
Filter and level
conversion
Fig. 4.5.6
– 78 –
Note 1)
Note 1)
Note 1)
Note 3)
Internal
circuit
STE 73843
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