Me GSV-6CPU, GSV-6L, GSV-6K Instruction Manual

1...6-channel measurement amplifier GSV-6

GSV-6CPU, GSV-6L, GSV-6K

Instruction manual

Version: 27.04.2015

GSV-6L: 12V/24V supply, output current / voltage

GSV-6CPU: 3.7V supply, output 0...3V; CAN, UART, 6x ADC

GSV-6K: 12V/24V supply, output current / voltage

Strain gauges measurement amplifier GSV-6

Contents

Strain gauges measurement amplifier GSV-6.......................................................................2

GSV-6CPU.........................................................................................................................3

Description.....................................................................................................................3

Dimensions....................................................................................................................4

Terminal assignment......................................................................................................4

Configuration interface..............................................................................................5

Strain gauges............................................................................................................5

Voltage supply...........................................................................................................5

Inputs/outputs............................................................................................................5

GSV-6L..............................................................................................................................6

Description.....................................................................................................................6

Dimensions....................................................................................................................7

Terminal assignment......................................................................................................7

5-pin terminal strip.....................................................................................................7

7-pin terminal strip.....................................................................................................7

Functions.......................................................................................................................8

GSV-6K..............................................................................................................................9

Description.....................................................................................................................9

Functions.....................................................................................................................10

Dimensions..................................................................................................................10

Terminal assignment....................................................................................................10

5-pin socket.............................................................................................................10

5-pin plug.................................................................................................................11

Annex...............................................................................................................................11

Technical data of GSV-6CPU......................................................................................11

Technical data GSV-6L / GSV-6K................................................................................13

Factory settings...........................................................................................................14

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GSV-6CPU

Description

The GSV-6 product range handles signal processing for strain gauges within the smallest
of spaces.

The core component of the GSV-6 is a PCB measuring 19mm x 14mm.

This "GSV-6CPU" provides all the required functions to set up a 1- to 6-channel
measurement amplifier.

Connector panels and functions for additional applications are expanded via 18-pin strips
with a 1.0 pitch: UART to Bluetooth, CAN bus driver, GPRS modem, etc.

The GSV-6 CPU comes complete with 6 input channels (even before any expansion). One
channel includes bridge excitation and differential input to operate strain gauge full
bridges.

• Strain gauge bridge excitation 3V, max. 60mA

• Strain gauge bridge input

• Analogue output 0-2.5V

• LED output

• TEDS input

• Digital inputs for the "Tare" and "Scale" functions

• 5x analogue inputs 0...3V

• Interfaces "UART", "CAN", "I2C" 1) "SPI"

1)

• Supply voltage 3.6V to 5.5V

• 3x Threshold value indicators 4mA

• 3.3V Voltage output 10mA

• 2.5V Reference 100µA

1) SPI and I2C without software support to date

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Dimensions

The GSV-6 CPU module can be configured via an UART configuration interface.
There is also scope to configure the most important settings using the Tare and Scale
cables.

Terminal assignment

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Figure 1: Dimensions GSV-6CPU

Figure 2: Terminal assignment GSV-6CPU

Configuration interface

A JTAG and UART interface is available for testing and development via a "BM10B" plug
connector.

Strain gauges

PIN Designation Function Comment

1 +Us (V_DMS) Positive bridge excitation 3 V 60 mA, short-circuit

proof

2 -Ud Negative bridge output

3 +Ud Positive bridge output

4 -Us (AGND) Negative bridge excitation (AGND)

Voltage supply

PIN Designation Function Comment

14 Vcc_IN Supply voltage 3.6 V ...5.5 V

15 GND Ground supply voltage

13 Supply_Warning For shutting down external hardware To be connected to

Vcc_IN

Inputs/outputs

PIN Designation Function Comment

18 Tare Tare >1s in actual-value mode: Zero adjustment

Tare > 100ms in maximum-value mode maximum­value reset

Tare > 2s in maximum-value mode: Zero adjustment

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Figure 3: Terminal assignment configuration interface

PIN Designation Function Comment

and maximum-value reset
Tare > 100ms in ClickRClackR menu: "Up", goes to

next menu entry.

17 Scale Scale > 2s: Scaling of the output signal to the

currently effective signal at the input. Default: set at
100% of the output signal. The autoscale level can
be configured to values other than 100% in the
ClickRClackR menu and via the service interface.

Scale > 5s when power switched on: Activate the
ClickRClackR menu

Scale > 100ms in ClickRClackR menu: "Enter",
executes the current menu entry.

16 TEDS

(Peak value)

The connection for 1-wire-EEPROMs functions with

3.3V instead of 5V and includes a 1.5 kR
pull-up resistor of 3.3V. The EEPROMs (e.g.

DS2433+, DS2430A, DS28EC20) of Maxim/Dallas
are 3.3V compatible.

The software supports TEDS sensors with the
Bridge Sensor ID 33 and

Strain-Gage ID 35 templates.

LED Status indicator, with signals including "TEDS read",

"Parameter active", "Parameter set", "Gradient
indicator".

max. 4mA, 200 ohm
series resistor;

Temperature
sensor

Type TMP102, -40°C ...+125°C, ±3°C;

GSV-6L

Description

The measurement amplifier GSV-6L adds a configurable analogue output to the GSV­6CPU. The GSV-6L is designed to be built into sensors and fits into the most confined
housing enclosures, such as connector housings of the "GSV-6K” type.
Even after it is enclosed, there is complete scope to configure all the properties of the
GSV-6L via two "Tare" and "Scale" control cables.
The calibration data from the electronic data sheet of the sensor is automatically accepted
via a TEDS input. The analogue output is then automatically adjusted to the increase set in
TEDS. Dimensions and terminal assignment

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Figure 4: GSV-6L

Dimensions

Terminal assignment

5-pin terminal strip

Designation Function Comment

+Us (V_DMS) Positive bridge excitation 3 V 60 mA, short-circuit

proof

-Ud Negative bridge output

+Ud Positive bridge output

-Us (AGND) Negative bridge excitation (AGND)

SW Threshold value output, OpenDrain 200mA, 30V

7-pin terminal strip

Designation Function Comment

LED Connection for LED max. 4mA, 200 ohm

series resistor;

GND Ground supply voltage

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Figure 5: Dimensions GSV-6L

Designation Function Comment

9...28V Supply voltage with polarity reversal
protection

U/I Out Negative bridge excitation (AGND) 9...28V or 2V over the

maximum output signal;

Scale Control lead for Scale or "ENTER" High Active; duration as

for GSV-6CPU

Tare Control lead for "Tare" or "UP" High Active; duration as

for GSV-6CPU

TEDS Input for TEDS as GSV-6CPU

Functions

The functions can be adjusted using the "Tare" and "Scale" control cables.

A simulator to configure the GSV-6 via control cables is also available via

http://www.me-systeme.de/click/click.php

Function Settings

Analogue output "Type"

0...10V, ±10V, 0...5V, ±5V, 4...20mA, 0...20mA

Analogue output "Offset" 0%, 10%, 12.5%, 20%, 25%, 30%, 37.5%, 40%, 50%

Example: an offset of 50% with an analogue output 0...10V shifts
the zero point at 0 mV/V to 5V. With an output of 4...20mA, the
zero point is shifted to 12mA with an offset of 50%. The input
sensitivity is shown at all times on the remaining "End Value ­Offset" area.

Data frequency in Hz
(Updating of measurement
values at the analogue output
or interface)

0.1, 0.2, 0.5, 1, 2, 10, 20, 50, 100, 200, 500, 1k, 2k, 5k, 10k, 20k,
25k;
The smallest data frequency at the output is 10Hz. At levels below
10Hz, a second-order IIR filter is used.

Input sensitivity in mV/V 0.1, 0.2, 0.3. 0.4, 0.5, 1, 2, 3, 4, 5, 8 (standard mode)

0.1, 0.2, 0.3, 0.4, 0.5, 1, 2, 3, 4, 5, 8 (high-res. mode)
In high-res. mode the physical measuring range is restricted,

which means there is less "reserve" available for a zero
adjustment with the Tare function.

Available physical measuring ranges: 8 mV/V, 4 mV/V, 2 mV/V, 1
mV/V

The input sensitivity can also be set to 5-digit precision using the
Tare and Scale cables in the ClickRClackR menu ("seamless").

Adjust autoscale level The autoscale level allows the output signal to be defined as a %

of the end value, which is shown by implementing "Scale" with the
current weight limit. Default setting: 100% (a weight limit of 100%
is expected).

The autoscale level can be adjusted in stages, from 5% within the
range 0 to 100%. When "0%" is set, the autoscale function is

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Function Settings

deactivated.

Level for threshold value
indicator "On"

The switch-on threshold of the threshold value indicator can be
adjusted in steps of 5% within the range 0 to 100%. When 0% is
set, the threshold value indicator is deactivated.

Level for threshold value
indicator "Off"

The switch-off threshold of the threshold value indicator can be
adjusted in steps of 5% within the range 3 to 98%. The switch-off
threshold should be set lower than the switch-on threshold. If "0%"
is set, the switch-off threshold is deactivated.

Operating mode "Actual value display" (Default), Maximum value display, Inversion

of the display, Non-volatile Tare setting (default) or volatile when
switched off, "Gradient" setting (special function, not included in
the standard configuration), TEDS activated (default) /
deactivated.

Load pre-setting Selecting this menu option loads the default settings included on

delivery.
±10V, 2 mV/V, 100Hz, Actual value display, TEDS active, Non-

inverted display,

GSV-6K

Description

The measurement amplifier GSV-6K includes a strain gauge input via a 5-pin M12 casing
bushing and an analogue output via a 5-pin M12 housing connector.

The GSV-6K is used to convert the bridge signal from force, torque or strain sensors to an
analogue output signal.

The electronic data sheet of the sensor can be read via a TEDS interface. The
measurement amplifier scales the output signal to the end value of the set output signal
using the TEDS interface.

The output signal can be set as a voltage output or current output.

The outputs 0...10V, ±10V, 0...5V, ±5V, 4...20mA, 0...20mA can be set using the "Tare" and
"Scale" control cables.

Similarly, an offset or sampling frequency can also be set.

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Functions

The unit is factory-configured to the desired output signal and with the desired functions.
The configuration can be modified using the "Tare" and "Scale" control cables.
Functions(Page 8).

Dimensions

Terminal assignment

M12 plug connector with A-coding;

5-pin socket

Pin No. Terminal assignment ME

(Type 1)ME(Type 2)

Phoenix

SAC-5P

1 +US Positive bridge excitation brown red brown

2 -US Negative bridge excitation white black white

3 +UD Positive differential input green green blue

4 -UD Negative differential input yellow white black

5 TEDS input grey grey

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Figure 6: Contact configuration M12
socket

2

1

3 4

5

5-pin plug

Pin No. Terminal assignment ME

(Type 1)

Phoenix

SAC-5P

1 Voltage supply 12V / 24V DC brown brown

2 Analogue output 4...20mA / ±10V white white

3 Ground green blue

4 Tare (Control input for zero adjustment) yellow black

5 Scale (Control input for autoscale) grey grey

Annex

Technical data of GSV-6CPU

Accuracy

Accuracy class 0,1 %

Resolution 16 Bit

Strain gauge inputs for full bridge 60 ... 20000 Ohm

Input sensitivity (FS) 0.1 ... 8 (configurable) mV/V

Common-mode rejection ratio

DC-60Hz
5 kHz

110
100

dB
dB

Noise amplitude "Pk-Pk"

1 Hz
10 Hz

100 Hz
1 kHz
10 kHz

20 µV/V (2 mV/V / 10000)
31 µV/V (2 mV/V / 6500)

80 µV/V (2 mV/V / 2500)
140 µV/V ( 2 mV/V / 1400)
240 µV/V ( 2 mV/V / 840)

Zero point drift (at 2 mV/V FS) <0.05 %FS/10K (1 µV/V / 10K)

Sensitivity drift (at 2 mV/V FS) <0.01%RD/10K

Analogue input

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Figure 7: Contact configuration M12 plug

1

2

4 3

5

Number
Resolution
Input range (nominal)
Zero point drift

6
16
0 ... 3
150 µV / 10K

Bit
V

Measuring frequency

Updating of analogue output 10 ...25000 Hz

Sampling frequency 50 kHz

Adjustment range of averaging filter 0.1 ...25000 Hz

Outputs

Bridge supply voltage

Current carrying capacity
Short-circuit resistance

3.0
60
Yes

Volt
mA

Analogue output

Resolution
Output resistance
Max. output current

1.5 V ± 1 V at 0 mV/V ± FS
13 bit
47
10

Ohm
mA

Threshold value output, Supply_Warning

LED
Level
Current carrying capacity:

LVTTL level
200 ohm series resistor required
>2.4V High; <0.4V Low

4

mA

Voltage source

Current carrying capacity

3.3
10

V
mA

Interfaces

UART, SPI, I2C, CAN, TEDS

Voltage supply

Nominal voltage
Current consumption

Min. supply voltage
Max. supply voltage

3.7
12

3.6

5.5

V
mA
V
V

Operating temperature

Nominal temperature -10°C ...85°C

Working temperature -40°C … 125°C

Dimensions

L x W x H 19 x 14 x 4 mm x mm x mm

Protection Class

IP00

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Technical data GSV-6L / GSV-6K

Accuracy

Accuracy class 0,1 %

Resolution 16 Bit

Strain gauge inputs for full bridge 60 ... 20000 Ohm

Input sensitivity (FS) 0.1 ... 8 (configurable) mV/V

Common-mode rejection ratio

DC-60Hz
5 kHz

110
100

dB
dB

Noise amplitude "Pk-Pk"

1 Hz
10 Hz

100 Hz
1 kHz
10 kHz

20 µV/V (2 mV/V / 10000)
31 µV/V (2 mV/V / 6500)

80 µV/V (2 mV/V / 2500)
140 µV/V ( 2 mV/V / 1400)
240 µV/V ( 2 mV/V / 840)

Zero point drift (at 2 mV/V FS) <0.05 %FS/10K (1 µV/V / 10K)

Sensitivity drift (at 2 mV/V FS) <0.01%RD/10K

Measuring frequency

Updating of analogue output 10 ...25000 Hz

Sampling frequency 50 kHz

Adjustment range of averaging filter 0.1 ...25000 Hz

Outputs

Bridge supply voltage

Current carrying capacity
Short-circuit resistance

3.0
60
Yes

Volt
mA

Analogue output

Resolution
Output resistance
Max. output current

Configurable
13 bit

0.12
10

Ohm
mA

Threshold value output,

Current carrying capacity:

Open drain
200 mA, 30V

Interfaces

TEDS

Voltage supply

Nominal voltage
Current consumption

Min. supply voltage
Max. supply voltage

12V … 24V
22
9
28

V
mA
V
V

Operating temperature

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Nominal temperature -10°C ...70°C

Working temperature -25°C … 85°C

Dimensions

GSV-6L (L x W x H)
GSV-6K (Ø x L)

22mm x 14mm x 9mm /
Ø20mm x 70mm

Protection class

GSV-6L
GSV-6K

IP00 /
IP66

Factory settings

GSV-6L, GSV-6K

Input sensitivity 2 mV/V

Physical measuring range

±4 mV/V (standard mode)

Analogue output

±10 V (±1 V)

Offset 0% (1.5 V)

Data frequency 100 Hz

Sampling frequency 50 kHz

Signs Not inverse

Level for scale 100%

Level for threshold value indicator 1 90%

Zero adjustment non-volatile

TEDS activated

Peak value output inactive

Gradient

±1 (mV/V) / s

Configuration interface 115200 baud, 8n1

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Subject to changes.
All details describe our products in a general form.

They constitute no warranty of characteristics as defined by § 459, Paragraph 2 of the German Civil Code
nor grounds for liability.

Made in Germany Copyright © 2015

ME-Meßsysteme GmbH

Printed in Germany