H
4/14
9021-0025-A
06.11. 2017
A
Page:
Document:
Date:
Revision:
Mini-PLC
STG-850
Art. No. 0850-0850
MANUAL
© 2016-2017 BARTH Elektronik GmbH | Im Depot 1-3 | D-49838 Lengerich | www.barth-elektronik.de
® BARTH is a registered trademark. All rights reserved. 9021-0025-A
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!
The 10-pole connector X2 contains the inputs of the Mini-
PLC. While IN7 to IN10 are pure digital inputs, IN1 to IN6
provide both digital or analog (0-30V) functionality. The
voltage range for all inputs may not exceed 32 VDC. All
inputs refer to GND.
Please refer to the appendix for detailed electrical
specication of the inputs.
2.2.4 Connecting the outputs
Depending on load type and current the Mini-PLC is able
to drive electric loads directly without any additional driver
or protection circuit. The Mini-PLC provides 4 digital solid-
state highside outputs and 1 solid-state lowside switch.
Features of OUT1 to OUT8
• Rugged solid-state higside switch up to 1.5A
• Switching up to 100Hz
• Paralleling permissible up to 6A
• Short circuit protection and current limitation
• Fast demagnetization of inductive loads
• Stable behaviour at undervoltage
• Comprehensive integrated protection circuits
• Outstanding electromagnetic compatibility (EMC)
• Electrostatic discharge protection (ESD)
Features of OUT9
• 2A Solid state lowside switch with PWM capability
• 16 bit PWM resolution from DC to 25kHz
• Comprehensive integrated protection circuits
• Outstanding electromagnetic compatibility (EMC)
• Electrostatic discharge protection (ESD)
The 9-pole connector X3 contains the digital outputs of
the Mini-PLC. While OUT1 to OUT8 are overload-protected
highside switches, OUT9 is carried out as lowside switch
with PWM capability.
A logical HIGH within miCon-L will switch the Mini-PLS´s
supply voltage at OUT1 to OUT8, while OUT9 switches
lowside (GND).
The total current sourced by OUT1 to
OUT8 must not exceed 6A!
Avoid reverse voltage at any output higher
than the Mini-PLC´s supply voltage!
If you use C-Programming take care of
not switching OUT1 to OUT8 higher than
100Hz ! Rise and fall times of the output
driver IC will cause higher power-losses
resulting in heat dissipation.
Please refer to the appendix for detailed electrical
specication of the outputs.
2.2.2 Connecting the power supply
The STG-850 features an outstanding wide supply voltage
range from 7 to 32 VDC at lowest current consumption. So
the Mini-PLC can be integrated within battery supplied 12V
or 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
specications may cause irreversible
damage of the Mini-PLC!
Connect the supply voltage of 7 to 32 VDC to the 4-pole
terminal X1 of the Mini-PLC. Wire the positive supply to the
‚+VDD‘ marked connection. The negative (ground) will be
wired to the ‚GND‘ connection. All terminals 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
6A max. is mandatory! Disregarding may
cause irreversible damage of the PLC!
2.2.3 Connecting the inputs
You can connect sensors, switches or buttons to the inputs.
The sensors may be temperature, ow, pressure, photo-
electric sensors or proximity switches, for example.
Features of IN1 to IN10
• IN1 to IN6 are selectable analog/digital inputs
• IN7 and IN8 are digital or event counter inputs up to 25kHz
• IN9 and IN10 are standard digital inputs
• Wide input voltage range 0 to 32VDC
• IN1 to IN6 are 0 to 10/30 V compatible (12 bit)
• Comprehensive integrated protection circuits
• Outstanding electromagnetic compatibility (EMC)
• Electrostatic discharge protection (ESD)
Due to the pull-down resistors integrated in the Mini-PLC
any switch (NO/NC) can simply be connected between the
positive supply (VDD) of the Mini-PLC and the desired input.
