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Electrical Specifications - Signal, continued
Discrete Input
Specifications
Table
The following table provides 17S discrete input specifications.
Discrete Output
Specifications
Table
The following table provides 17S discrete output specifications.
Continued on next page
DISCRETE INPUT
Channels Five (four programmable and one dedicated for enable)
Type Solid state, optically isolated, compatible IEC 1131-2 type 1
Transient
isolation voltage
250 Vac (channel to chassis)
V
IN
maximum 30 Vdc
I
IN
@ V
IN
= 24 V 5 mA
V
IH
minimum 12 V (minimum input voltage to be recognized as high – true)
V
IL
maximum 7 V (maximum input voltage to be recognized as low – false)
Scan time:
Normal
High speed
1 ms
< 50 µs
DISCRETE OUTPUT
Channels Two
Type Solid state: open collector 30 Vdc max., optically isolated
Transient
isolation voltage
250 Vac (channel to chassis)
Sense True low, sinking
I
OUT
10 mA maximum
Protection
Yes (PTC resistor: 25
Ω)
Scan time 1 ms