Specifications

38
Presentation,
description
Advantys STB
Distributed I/O Solution 1
Counter Module
Counting parts or events, grouping objects, controlling incoming and outgoing data
streams, and measuring lengths or positions all require counting functions.
The STB EHC 3020 counter module performs these functions for an Advantys STB
automation island (controlled by a master connected to the island) with a max.
counting frequency of 40 kHz.
The STB EHC 3020 module, with 1 counting channel, accepts as input typical
c 24 V sensors: proximity sensors, photo-electric detectors, incremental encoders
or mechanical contacts (1).
As output, the module features 2 digital
c 24 V 0.5 A outputs.
The Advantys configuration software is used to select one of the six functions the
module can perform.
(1) The counting frequency is limited to 400 Hz with mecanical contacts.
The front panel of the STB EHC 3020 counter module features:
1 A display block with 8 display LEDs:
v RDY LED: module is operational,
v FLT LED: steady: module fault; blinking: c 24 V power distribution fault or output
short circuit (depending on pattern)
v OUT 1 or OUT 2 LEDs: output 1 or 2 active (steady) or short circuit (blinking),
v IN A, IN B, RST and EN LEDs: status of 4 input channels.
2 Location for user-customizable labels.
3 Color-coded module identification stripe (black).
4 A connector for an STB XTS 2150 removable spring-type connector (must be
ordered separately).
To be ordered separately:
b STB XBA 3000 base width 28.1 mm. Includes a location for user-customizable
labels.
b STB XTS 2150 removable connector with 18-pin.
Counter channel block diagram
Depending on the counting function used (see operating characteristics page 39),
the I/O for the STB EHC 3020 module are allocated to:
b Input IN A, connected to a sensor.
b Inputs IN B, EN and RST, connected to a sensor or activated by the Advantys STB
master via the field bus.
The 16-bit counter value is continually compared to the two threshold values
(configured with the configuration software) and is used to activate the two OUT 1
and OUT 2 outputs, without requiring processing by the bus master controller.
Reports such as the counting value or the two status bits (counter status,
compare status) are sent to the master controller of bus.
Presentation
Description
1
2
3
4
Operation
IN A and IN
B counting
inputs
Output
function
block
Compare
block
EN and RST
auxiliary
inputs
Output for
c 24 V
0.5 A
counters
OUT 1 and
OUT 2
Counter
status
High threshold
Low threshold
Island bus
master
Counter
block
Output
function
block
Compare
status
Counter and
capture values
C
haracteristics:
p
ages 39 and 40
References:
page 41
Dimensions:
page 41
Wiring:
page 41