Proton SL mini 1220, Instruction Manual

Page: 34 / 127

Page 34 of 126
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s

The SHUT_EN input is NOT isolated from earth.

The input is internally pulled up to +15V via an 8.2
kΩ
resistor and will default to the high state if
left unconnected.

The input 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
SHUT_ST output electrical specifications
Connector type: DB25 female (socket)
Functional
group
Pin Designation Description Notes
Shield S Shield Shield Connect to cable and connector shields
Power
supply and
ground
25 +24V SUPPLY
+24V power
supply
2
DGND
Power supply
and signal
ground (0V)
15
24
Shutter
control
12 SHUT_ST
Shutter
status output
Signal Shutter Laser
Pulled down to
DGND
Open Emitting
Floating Closed Blocked

The SHUT_ST output is NOT isolated from earth.

The SHUT_ST output must NOT be used to directly drive high-current or inductive loads.

It is recommended that the SHUT_ST output is used to drive an opto-isolated solid-state
relay.
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