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Inputs And Outputs; Inputs - HBM FIT7A Bedienungsanleitung

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7

Inputs and outputs

Reference potential
High level
Low level
Input resistance
Function
Quiescent level
Triggering event
1)
Stable level at trigger input used. The other wire must be at low level or not connected.
2)
Debouncing is dependent on the function set (IMD command), but not on the input used (device
socket 1 or 2).
®
FIT
7A
7.1

Inputs

Apply the control signals between the particular input and
reference potential (GND). In the standard version, the
trigger input can be directly activated with a logic signal
(HCMOS), although voltages up to 12 V are also
possible. The inputs of device socket 2 are suitable for
the signals of a PLC. The reference potential in both
cases is GND of device socket 1. The table below shows
the allocation of logic states to the voltage values at the
input. Levels between the stated high and low levels
produce undefined states!
Trigger input
GND
>4 V
<1 V
70 kΩ
External trigger
High or low level
Transition from high to low
level
A3924-1.1 HBM: public
Inputs IN1, IN2
GND
>10 V
<6 V
9 kΩ
TAR, Break, RUN functions
1
Low level
High level, debounced
Inputs and outputs
2
21

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