BAR H
Elektronik GmbH
®
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9021-0003-A
23.10.2015
A
Page:
Document:
Date:
Revision:
Mini-PLC
STG-115
Art. No. 0850-0115
MANUAL
© 2014-2015 BARTH Elektronik GmbH | Im Depot 1-3 | D-49838 Lengerich | www.barth-elektronik.de
® BARTH is a registered trademark. All rights reserved.
9021-0003-A
5.3.2 Connecting the inputs
You can connect sensors, switches or buttons to the inputs.
The sensors may be temperature, flow, pressure, photo-
electric sensors or proximity switches, for example.
The STG-115 is well suitable for any sensor featuring a vol-
tage or current loop output, 0 to 10 VDC or 4 to 20 mA, for
example.
Common features of the inputs IN1-IN10 (X6, X7)
• IN1 to IN8 are selectable analog/digital inputs
• IN9 and IN10 are switchable inputs 0-10VDC or 4-20mA
• Wide input voltage range 0 to 32VDC
• Comprehensive integrated protection circuits
• Outstanding electromagnetic compatibility (EMC)
• Electrostatic discharge protection (ESD)
Due to the pull-down resistors integrated in the STG-115,
any switch (NO/NC) can simply be connected between the
positive supply (+VDD) of the STG-115 and the desired input.
The voltage at any input must not exceed
32VDC referred to ground (GND).
Higher voltages or reverse voltage lower
than -32VDC may cause irreversible
damage of the Mini-PLC!
At both IN9 and IN10 the applied signal
must not exceed 12VDC or 25mA!
The 8-pole X6 connector named ‚IN1‘ to ‚IN8‘ contains all
common 0-30VDC inputs of the Mini-PLC.
The 2-pole X7 connector contains two special inputs named
‚IN9‘ and ‚IN10‘ which are DIP-switchable from 0-10VDC to
4-20mA. The default value of both inputs is 4-20mA.
To change the input IN9 from 4-20mA to 0-10V please set
the switch 1 of the S1 DIP switch from ON to OFF.
To change the input IN10 from 4-20mA to 0-10V please set
the switch 2 of the S1 DIP switch from ON to OFF.
Switches 3 and 4 of S1 are not related to any function.
Using the inputs IN9 and IN10 as current loop 4-20mA type
a pull-down resistor of 470 Ohm is used within the STG-115
to receive a voltage from a current signal.
Using the miCon-L software suite you have to know wether
or not the inputs IN9 and IN10 are configured as current
loop type to recalculate the current from the received vol-
tage value within miCon-L.
5.2
Wiring
5.3
Overview
Connectors
X1:
Power supply (fused)
X2:
USB connection (PC interface for miCon-L)
X4:
Common output ports OUT1-OUT8
X5:
Relay output OUT9
X6:
Common input ports IN1-IN8
X7:
Special input ports IN9-IN10 (0-10V/4-20mA)
X8:
Common ground (bridged parallel)
S1:
DIP switch to configure X7 ports IN9 and IN10
5.3.1 Connecting the power supply
The STG-115 features an outstanding wide supply voltage
range from 16 to 32 VDC at lowest current consumption.
So the Mini-PLC can be integrated within battery sup-
plied 24V DC systems (cars, trucks, battery powered cars,
forklifts and digger, for example).
Turn off the power supply before perfor-
ming any wiring operations!
False electrical connection, voltage
reversal or disregarding the electrical
specifications may cause irreversible
damage of the Mini-PLC!
Connect the supply voltage of 16 to 32 VDC to the X1 termi-
nal named ‚+VDD‘ and ‚GND‘ of the STG-115.
Wire the positive supply to the ‚+VDD‘ marked terminal. The
negative (ground) will be wired to the ‚GND‘ terminal.
All connectors are carried out as plugable spring terminal
connectors for a wire gauge of 0.25 to 1.5mm².
Ensure correct power supply voltage
range and polarisation! External fusing of
8A max. is mandatory!
Disregard may cause irreversible damage
of the Mini-PLC!
