Proton SL mini 1220, Инструкция по эксплуатации

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Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
S
TANDARD
E
LECTRICAL
I
NTERFACES
L
OGIC
I
NPUTS
Logic inputs connection
Two logic inputs are fitted as standard and may be accessed through the following pins:
Connector type: DB25 female (socket)
Functional
group
Pin Designation Description Notes
Shield S Shield Shield Connect to cable and plug shields
Power
supply and
ground
2
DGND
Power supply and
signal ground (0V)
15
24
Logic
inputs
3 LIN1 Logic input 1
Low state (logic 0) voltage < +3V
High state (logic 1) voltage > +10.5V
Maximum input voltage ±30V
4 LIN2 Logic input 2
5 LIN3 Logic input 3
Logic inputs electrical specification

Logic inputs are NOT isolated from earth.

Inputs are internally pulled up to +15V via 8.2
kΩ
resistors; unconnected inputs default to the high
state.

Inputs will source a minimum current of 3mA when externally pulled down to the low state.
Specification Minimum Typical Maximum Units
Low state (logic 0) input voltage 3 V
High state (logic 1) input voltage 10.5 V
Absolute input voltage -30 30 V
Low state source current 3 mA
Logic inputs can be connected to different types of signal sources as follows:
Signal source Connection method
Mechanical or solid
state relay contact
Connect between logic input and DGND.
Pull-down Connect the pull-down signal to the logic input and ground to DGND.
Pull-up

Connect an 820
Ω resistor between the logic input and DGND
to pull the
input down to 2.5V.

Connect the pull-up signal source to the logic input and ground to DGND.

For 24V signals (such as from a PLC), the power dissipation in the 820
Ω
resistor can be reduced by connecting another 820
Ω
in series between the
pull-up signal source and logic input.
1
1
4
2
1
5
3
1
6
4
1
7
5
1
8
6
1
9
7
2
0
8
2
1
9
2
2
1
0
2
3
1
1
2
4
1
2
2
5
1
3