Proface LT3300 - 5.7 All-in-One HMI" - Manual (Page 34)

Chapter 2 Specifications
2-7
‹ Input Derating
Using LT input voltage that exceeds the rated voltage, the input ON voltage, the number of input points or the
LT’s temperature can effect. Also, the LT’s input section could overheat, which could lead to an accident or
malfunction. Refer to the following drawing and perform Input Derating within the LT unit’s rated range.
Input Delay
Time
*1
OFF to ON 0.5 to 20ms *2
ON to OFF 0.5 to 20ms *2
Input Signal Display No LED indicators
Status Display None
Isolation Method Photocoupler Isolation
External Connection 22-pin connector (used with Output section)
External Power Supply For Signal: DC 24V
*1 In the case of IN0, IN2, IN4, and IN6, the input delay time generates a 5µs-
delay. For example, in the case of a 0.5ms-cycle sampling:
5µs (ON to OFF) + 0.5ms (sampling cycle) + 5µs (OFF to ON) = 0.51ms
A minimum 0.51ms-restriction is imposed on the input pulse width.
In the case of IN1, IN3, IN5, and from IN7 to IN11, the input delay time gen-
erates a 0.5ms-delay. For example, in the case of a 0.5ms-cycle sampling:
0.5ms (ON to OFF) + 0.5ms (sampling cycle) + 0.5ms (OFF to ON) = 1.5ms
A minimum 1.5ms-restriction is imposed on the input-pulse width.
*2 Digital filter can be set at intervals of 0.5 ms.
(%)
100
50
0
0 10 20 30 40 50 ( °C)
In
put
ON Rat
e
Surrounding Operating Temperature
DC24.0 to DC26.4V
DC28.8V