Interface BX8-HD15 User manual

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
www.interfaceforce.com ●Email: [email protected] ●ORDER TOLL-FREE 800.947.5598
8-Channel Measuring Amplifier BX8
Operating Manual
15-247 Version 7E

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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Measuring Amplifier BX8
Description
The 8-channel measuring amplifier BX8 is characterised by particularly high resolution at
data frequencies of 1 Hz to 48000 Hz. The 8 channels are acquired simultaneously.
Versions
Type
Sensor Input
Signal-Output
BX8-HD15
8x 15-Pin HD D-Sub
1xUSB, UART, Analog, Digital-I/O
BX8-HD15-EC
8x 15-Pin HD D-Sub
1xUSB, EtherCat, Analog, Digital-I/O
BX8-HD15-CAN
8x 15-Pin HD D-Sub
1xUSB, UART, CAN, Analog, Digital-I/O
BX8-HD44
4x 44-Pin HD D-Sub
1xUSB, UART, Analog, Digital-I/O
BX8-HD44-EC
4x 44-Pin HD D-Sub
1xUSB, EtherCat, Analog, Digital-I/O
BX8-HD44-CAN
4x 44-Pin HD D-Sub
1xUSB, UART, CAN, Analog, Digital-I/O
BX8-AS
1x 24-Pin M16, screw terminal
1xUSB, UART, Analog, Digital-I/O
BX8-AS-EC
1x 24-Pin M16, screw terminal
1xUSB, EtherCat, Analog, Digital-I/O
BX8-AS-CAN
1x 24-Pin M16, screw terminal
1xUSB, UART, CAN, Analog, Digital-I/O
8-channel measuring amplifier
8x input configurable full, half, quarter bridges, 120- 350- 1000 Ohm, PT1000, ±10V
Outputs 1x USB Port, 8x analog output, ±10V, 4...20mA configurable
16x digital in- and output
Galvanic isolation: analog-input, analog-output, digital-IO, 1x UART, USB
Options : EtherCat, CANbus/CANopen
8x 48kS/s simultaneous sampling
6-wire technology, bridge supply 2.5V, 5.0V, 8.75V configurable
Automatic configuration of analog and digital filters by specifying the data frequency
Additional Digital Filters FIR 14th order and IIR 4th order are individually configurable
Step response of the filter configuration can be viewed in software
Resolution < 20 nV/V

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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Interfaces
Communication interfaces such as USB port or EtherCAT or CANbus are available. The
device has 8 configurable Analog Outputs (±10 V and 4...20 mA among others). UART
interface serves to control the measuring amplifier via the Raspberry PI.
Features
There are 8 Analog Inputs available. They are individually configurable as:
Strain gage input for full bridges in 4 and 6 wire technology or
Strain gage input for half bridges or
Strain gage input for quarter bridges 120 ohm, 350 ohm, 1K Ohm or
Single-ended input ±10 V or
Input for PT1000 temperature sensor.
The strain gage supply voltage can be switched between 8.75 V, 5.00 V and 2.5 V, Input
sensitivities 2 mV/V, 3.5 mV/V or 7 mV/V.
Bridge supply voltage
Resulting input sensitivity
8.75V
2mV/V
5V
3.5mV/V
2.5V
7mV/V
Galvanic Isolation
The supply voltage UB+ UB- is galvanically isolated from the components for
analog input
analog output
digital inputs and outputs
interfaces
The isolation voltage is 50 V
UB+
Supply Voltage 12...28V DC
UB-
Ground Supply Voltage
GNDE
Ground Analog-Input
-Us
Negative Bridge Supply
GNDA
Ground: Analog-Output
GNDD
Ground Digital Input /Output
GNDU
Ground UART Port (“Raspberry PI Port“)
GNDR
Ground RS232 Port

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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Dimensions
BX8-HD15
BX8-HD44

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BX8-AS
Technical Data
Analog Input
Accuracy class
0.05%
Number of analog inputs
8
Strain gage bridge input
Quarter, Half, Full Bridge
Input impedance
> 20M Ohm (300pF)
Common mode rejection DC
> 120 dB
Common mode rejection AC 100Hz
> 100 dB
Strain gage bridge completion
120 Ohm, 350 Ohm, 1K Ohm
Strain gage bridge supply
2.50 V, 5.00 V, 8.75 Volt
Total current across all channels
200 mA
Max. current per channel
60 mA
Input sensitivity
7 mV/V, 3.5 mV/V, 2 mV/V

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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Accuracy class
0.05%
Input voltage
±10 V
Input resistance
10M Ohm
Input for PT1000 sensor
-230 °C ... +1500 °C
Excitation voltage PT1000
1.25 V
Digital Input / Digital Output
Number of in-/ outputs
16
Output
TTL (0V 5V), push-pull
total current across all channels
140 mA
max. load current per output
25 mA
Input
max. input voltage
5.5 V
min. input voltage
-0.5 V
Resistance Pull Up +5V
10K Ohm
Sampling period
40 mS
Analog Output
Number of analog outputs
8
Configuration of analog outputs
0...10V, -10V..+10V, 0...5V, -5V...+5V, 4...20mA
Supply
Supply voltage
12 V to 28 V
Power
< 12 W
Environmental data
Operating temperature
0 °C ... +50 °C
Power
< 12 W
Interfaces
USB
2.0 Full Speed
Devices class
Communication Device Class, HID (firmware
update only)

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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UART
Level 3.3V, galvanically isolated;
auxiliary voltage 24V DC, 2A
EtherCat
Protocol: CoE device profile 404, Mailbox- and
buffered mode. Synchronization: Hardware-
Latching
CANbus
CANopen, device profile 404, 4x TxPDOs,
galvanically isolated
Resolution of Strain Gage Input
The resolution of the measuring amplifier depends on the adjusted input sensitivity. The
input sensitivity is coupled with the bridge supply voltage: 8.75V with 2.0 mV/V, 5V with 3.5
mV/V, 2.5V with 7 mV/V.
The excitation voltage with 8.75V is recommended only with sensors of minimum 1K Ohm
connecting resistance and enough construction size. For miniature sensors under 500g
weight the bridge supply of 8.75V may not be applied!
+Us
10 Hz
50 Hz
100 Hz
1 kHz
5 kHz
8 kHz
3.5 mV/V
5 V
2.0 105
1.2 105
8.0 104
2.5 104
1.0 104
8.0 103
2.0 mV/V
8.75 V
3.0 105
2.5 105
1.5 105
6.0 104
4.0 104
1.4 104
At a data frequency of 10 Hz the measuring range from 0 to +3.5 is divided in 2.0x105
steps.
The noise amplitude is 17.5 nV/V.
At a sensor with rated force of 10 N and rated output of 0.5 mV/V the noise amplitude is
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Signal flow
Digital Filters
The BX8 automatically selects the analog filter and the "decimating" averaging filter
depending on the data rate (samples per second) set by the user. The user must only
enter the desired number of samples per second to be supplied via the USB port or analog
outputs.
In addition, there are two adjustable digital filter: 1x FIR filter and IIR filter 1x. Each of
these digital filters can be set individually for each of the 8 input channels. In the
measurement data signal processing chain, the FIR filter is listed first, followed by the IIR
filter.
Finite Impulse Response Filters
The FIR filter is a low pass filter, wherein the filter order N, and the limit frequency fg can
be adjusted. The cutoff frequency is that signal frequency at which the signal is already
attenuated by -3 dB. This corresponds to a factor of about 0.7. Signals above this
frequency are attenuated further.
The filter order determines the maximum and minimum adjustable cut-off frequency fg in
terms of data rate Fa, and the steepness of the attenuation range. Higher orders have a
steeper slope, i.e. an increase in the signal frequency causes the attenuation to increase
faster. The so-called step response is slower at higher orders however, i.e. it always takes
N+1 measured values until the filter’s output value corresponds to the input value.
AD
Converter
48 kS/s / N
decimating
Filter
config.
IIR / FIR
Filters USB
D/A
Converter
±10 V
4..20 mA
Analog
Filter
8 8 8
48kS /s
N
48 kS/s
8
8 8
8
Fullscale
2

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Order
fg/Fa min in Hz
fg/Fa max in Hz
14
0.05
0.190
12
0.06
0.225
10
0.07
0.270
8
0.09
0.340
6
0.12
0.350
4
0.18
0.410
Infinite Impulse Response Filter
The digital filter is a so-called infinite impulse response filter (IIR) of fourth order.
Four different filter types can be set:
1. Low pass filter: Sensor signals at low frequency (including DC size with f=0) pass
through the filter, signals at a higher frequency are attenuated.
2. High pass filter: Sensor signals at low frequency (including DC size with f=0) are
attenuated, signals at a higher frequency pass through the filter. Note: Frequencies above
half of the measured data rate cannot be processed. The measuring amplifier includes an
Analog-to-digital sampling system, which in itself acts as a low pass.
3. Band pass filter: Signals are allowed to pass through within a frequency range, signals
which are above or below this range are attenuated.
4. Band stop filter (‘Notch filter’): Signals are attenuated within a frequency range, signals
which are above or below this range are allowed to pass through.
The cutoff frequency can be configured for low and high pass filters. The cutoff frequency
is the frequency at which the signal is already attenuated by -3 dB. This corresponds to a
factor of approx. 0.7. Frequencies lying above for low pass and lying below for high pass
will continue to be attenuated.
Two cutoff frequencies can be configured for band pass and band stop filters; the upper
and the lower. Attenuation by -3 dB also occurs here. The two cutoff frequencies may not
be the same. Signal frequencies lying between these are allowed to pass through for the
band pass filter, and are attenuated for the band stop filter.
The maximum (and also the minimum if need be) of each cutoff frequency is dependent on
the measured data rate. Cutoff frequencies can be set to (0.49 * measured data rate), i.e.
almost to half.
The filters can be individually configured for each channel and also switched on and off.
The configuration also remains the same for filters that have been switched off.

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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Buttons and Displays
Power-button with LED function
Switch on and off the device (only BX8-8DS)
Function LED
Mod-button with LED status
a) reset the status LED;
b) start the Firmware-updates, if during the
Power On activates
CHK button with Check LED
Sensor Test; by pressing the CHK button the
sensor signal for the unloaded condition is
simulated on the input of the measuring
amplifier; for sensors with calibration matrix the
documented zero signals of the sensor are
simulated on the inputs.
ECR-LED
EtherCat EC Run;
TARE
“Tara“, Set-Zero“: trigger the automatic zero
adjustment for all outputs (Analog and digital)
Pin Configuration
Input SUB-D15 HD
Connection of strain gauges, active sensors, TEDS. Activation of the bridge completion
with bridge from “HB” (12) to -UD (10).
No
Symbol
Description
1
TEDS
Transducer Electronic Data according to IEEE 1451.4
2
-Us
Negative Bridge Supply
3
+Us
Positive Bridge Supply
4
Q350
Quarter Bridge Completion 350 Ohm
5
+UD
Positive Differential Input
6
GNDE
Ground, Analog Input
7
-Uf
Negative Sense Line (6-wire connection only)
8
+Uf
Positive Sense Line (6-wire connection only)
1
5
11
15

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No
Symbol
Description
9
Q120
Quarter Bridge Completion 120 Ohm
10
-UD
Negative Differential Input
11
Q1k
Quarter Bridge Completion 1000 Ohm
12
HB
Half Bridge Completion
13
VCCIO
Supply Voltage for active sensors (optional)
14
Ue
Analog Input Voltage, single ended ±10V
15
GNDIO
Ground, Supply Voltage (optional)
Shield
PE
Earth (housing)
Input Sub-D44 HD
Up to 3 channels can be connected to the 44-pin Sub D socket. The labeling on the front
panel is 1/3 for connecting the channels 1 to 3.
1/3 Channel 1,2,3, Sub-D HD 44
Pin
Signal
Description
Channel
Shield
PE
Earth (housing)
-
1
TEDS
Transducer Electronic Data according IEEE
1451.4
1
2
US-
Negative Bridge Supply
1
3
US+
Positive Bridge Supply
1
4
Q350
Quarter Bridge Completion 350 Ohm
1
5
UD+
Positive Differential Input
1
6
GNDE
Ground, Analog Input
1
7
UF-
Negative Sense Line (6-wire connection only)
1
8
UF+
Positive Sense Line (6-wire connection only)
1
9
Q120
Quarter Bridge Completion 120Ohm
1
10
UD-
Negative Differential Input
1
11
Q1k
Quarter Bridge Completion 1000Ohm
1
1
15
31
44

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1/3 Channel 1,2,3, Sub-D HD 44
Pin
Signal
Description
Channel
12
HB
Half Bridge Completion
1
13
UE
Analog Input Voltage, single ended ±10V
1
14
GNDIO
Not equipped sep.galv. isol. (optional)
1
15
PE
Earth (housing)
-
16
TEDS
Transducer Electronic Data according IEEE
1451.4
2
17
US-
Negative Bridge Supply
2
18
US+
Positive Bridge Supply
2
19
Q350
Quarter Bridge Completion 350 Ohm
2
20
UD+
Positive Differential Input
2
21
GNDE
Ground, Analog Input
2
22
UF-
Negative Sense Line (6-wire connection only)
2
23
UF+
Positive Sense Line (6-wire connection only)
2
24
Q120
Quarter Bridge Completion 120 Ohm
2
25
UD-
Negative Differential Input
2
26
Q1k
Quarter Bridge Completion 1000 Ohm
2
27
HB
Half Bridge Completion
2
28
UE
Analog Input Voltage, single ended ±10V
2
29
GNDIO
not equipped sep.galv.isol. (optional)
2
30
VCCIO
not equipped sep.galv.isol. (optional)
1,2,3
31
TEDS
Transducer Electronic Data acc. to IEEE 1451.4
3
32
US-
Negative Bridge Supply
3
33
US+
Positive Bridge Supply
3
34
Q350
Quarter Bridge Completion 350 Ohm
3
35
UD+
Positive Differential Input
3
36
GNDE
Ground, Analog Input
3
37
UF-
Negative Sense Line (6-wire connection only)
3
38
UF+
Positive Sense Line (6-wire connection only)
3
39
Q120
Quarter Bridge Completion 120 Ohm
3
40
UD-
Negative Differential Input
3
41
Q1k
Quarter Bridge Completion 1000 Ohm
3
42
HB
Half Bridge Completion
3

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1/3 Channel 1,2,3, Sub-D HD 44
Pin
Signal
Description
Channel
43
UE
Analog Input Voltage, single ended ±10V
3
44
GNDIO
Not equipped sep.galv.isol. (optional)
3
The labelling on the front panel is 4/6 for connecting the channels 4 to 6.
4/6 Channel 4,5,6, Sub-D HD 44
Pin
Signal
Description
Channel
Shield
PE
Earth (housing)
-
1
TEDS
Transducer Electronic Data acc. to IEEE 1451.4
4
2
US-
Negative Bridge Supply
4
3
US+
Positive Bridge Supply
4
4
Q350
Quarter Bridge Completion 350 Ohm
4
5
UD+
Positive Differential Input
4
6
GNDE
Ground, Analog Input
4
7
UF-
Negative Sense Line (6-wire connection only)
4
8
UF+
Positive Sense Line (6-wire connection only)
4
9
Q120
Quarter Bridge Completion 120 Ohm
4
10
UD-
Negative Bridge Supply
4
11
Q1k
Quarter Bridge Completion 1000 Ohm
4
12
HB
Half Bridge Completion
4
13
UE
Analog Input Voltage, single ended ±10V
4
14
GNDIO
Not equipped sep.galv.isol. (optional)
4
15
PE
Earth (housing)
-
16
TEDS
Transducer Electronic Data acc. to IEEE 1451.4
5
17
US-
Negative Bridge Supply
5
18
US+
Positive Bridge Supply
5
19
Q350
Quarter Bridge Completion 350Ohm
5
20
UD+
Positive Differential Input
5
21
GNDE
Ground, Analog Input
5
22
UF-
Negative Sense Line (6-wire connection only)
5
23
UF+
Positive Sense Line (6-wire connection only)
5
24
Q120
Quarter Bridge Completion 120 Ohm
5
25
UD-
Negative Differential Input
5
26
Q1k
Quarter Bridge Completion 1000 Ohm
5

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4/6 Channel 4,5,6, Sub-D HD 44
Pin
Signal
Description
Channel
27
HB
Half Bridge Completion
5
28
UE
Analog Input Voltage, single ended ±10V
5
29
GNDIO
not equipped sep.galv.isol. (optional)
5
30
VCCIO
not equipped sep.galv.isol. (optional)
4,5,6
31
TEDS
Transducer Electronic Data acc. to IEEE 1451.4
6
32
US-
Negative Bridge Supply
6
33
US+
Positive Bridge Supply
6
34
Q350
Quarter Bridge Completion 350 Ohm
6
35
UD+
Positive Differential Input
6
36
GNDE
Ground, Analog Input
6
37
UF-
Negative Sense Line (6-wire connection only)
6
38
UF+
Positive Sense Line (6-wire connection only)
6
39
Q120
Quarter Bridge Completion 120 Ohm
6
40
UD-
Negative Differential Input
6
41
Q1k
Quarter Bridge Completion 1000 Ohm
6
42
HB
Half Bridge Completion
6
43
UE
Analog Input Voltage, single ended ±10V
6
44
GNDIO
Not equipped sep.galv.isol. (optional)
6
At the 44-pole SubD socket 1/6 up to 6 channels can be connected. The labeling on the
front panel is 1/6 for connecting the channels 1 to 6 The connections are parallel to the
input jacks 1/3 and 4/6 .
Channel 1,2,3,4,5,6, Sub-D HD 44
Pin
Signal
Description
Channel
Shield
PE
Earth (housing)
-
1
UF+
Positive Sense Line (6-wire connection only)
1
2
US+
Positive Bridge Supply
1
3
UD+
Positive Differential Input
1
4
UD-
Negative Differential Input
1
5
US-
Negative Bridge Supply
1
6
UF-
Negative Sense Line (6-wire connection only)
1
7
TEDS
Transducer Electronic Data according IEEE 1451.4
1
8
UF+
Positive Sense Line (6-wire connection only)
2
9
US+
Positive Bridge Supply
2

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Channel 1,2,3,4,5,6, Sub-D HD 44
Pin
Signal
Description
Channel
10
UD+
Positive Differential Input
2
11
UD-
Negative Differential Input
2
12
US-
Negative Bridge Supply
2
13
UF-
Negative Sense Line (6-wire connection only)
2
14
TEDS
Transducer Electronic Data according IEEE 1451.4
2
15
PE
Earth (housing)
-
16
UF+
Positive Sense Line (6-wire connection only)
3
17
US+
Positive Bridge Supply
3
18
UD+
Positive Differential Input
3
19
UD-
Negative Differential Input
3
20
US-
Negative Bridge Supply
3
21
UF-
Negative Sense Line (6-wire connection only)
3
22
TEDS
Transducer Electronic Data according IEEE 1451.4
3
23
UF+
Positive Sense Line (6-wire connection only)
4
24
US+
Positive Bridge Supply
4
25
UD+
Positive Differential Input
4
26
UD-
Negative Differential Input
4
27
US-
Negative Bridge Supply
4
28
UF-
Negative Sense Line (6-wire connection only)
4
29
TEDS
Transducer Electronic Data acc. to IEEE 1451.4
4
30
PE
Earth (housing)
-
31
UF+
Positive Sense Line (6-wire connection only)
5
32
US+
Positive Bridge Supply
5
33
UD+
Positive Differential Input
5
34
UD-
Negative Differential Input
5
35
US-
Negative Bridge Supply
5
36
UF-
Negative Sense Line (6-wire connection only)
5
37
TEDS
Transducer Electronic Data according IEEE 1451.4
5
38
UF+
Positive Sense Line (6-wire connection only)
6
39
US+
Positive Bridge Supply
6
40
UD+
Positive Differential Input
6
41
UD-
Negative Differential Input
6

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Channel 1,2,3,4,5,6, Sub-D HD 44
Pin
Signal
Description
Channel
42
US-
Negative Bridge Supply
6
43
UF-
Negative Sense Line (6-wire connection only)
6
44
TEDS
Transducer Electronic Data acc. to IEEE 1451.4
6
At the 44-pin Sub D socket 7/8 up to 2 channels can be connected (channel 7 and channel
8) .
Channel 7, 8, Sub-D HD 44
Pin
Signal
Description
Channel
Shield
PE
Earth (housing)
-
1
UE
Analog Input Voltage, single ended ±10V
1
2
GNDE
Ground, Analog Input
1
3
UE
Analog Input Voltage, single ended ±10V
2
4
GNDE
Ground, Analog input
2
5
UE
Analog Input Voltage, single ended ±10V
3
6
GNDE
Ground, Analog Input
3
7
UE
Analog input voltage, single ended ±10V
4
8
GNDE
Ground, Analog input
4
9
UE
Analog Input Voltage, single ended ±10V
5
10
GNDE
Ground, Analog Input
5
11
UE
Analog Input Voltage, single ended ±10V
6
12
GNDE
Ground, Analog Input
6
13
PE
Earth (housing)
-
14
PE
Earth (housing)
-
15
PE
Earth (housing)
-
16
TEDS
Transducer Electronic Data according IEEE 1451.4
7
17
US-
Negative Bridge Supply
7
18
US+
Positive Bridge Supply
7
19
Q350
Quarter Bridge Completion 350 Ohm
7
20
UD+
Positive Differential Input
7
21
GNDE
Ground, Analog Input
7
22
UF-
Negative Sense Line (6-wire connection only)
7
23
UF+
Positive Sense Line (6-wire connection only)
7
24
Q120
Quarter Bridge Completion 120Ohm
7
25
UD-
Negative Differential Input
7

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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Page 17of 39
Channel 7, 8, Sub-D HD 44
Pin
Signal
Description
Channel
26
Q1k
Quarter Bridge Completion 1000Ohm
7
27
HB
Half Bridge Completion
7
28
UE
Analog Input Voltage, single ended ±10V
7
29
GNDIO
not equipped sep.galv.isol. (optional)
7
30
VCCIO
not equipped sep.galv.isol. (optional)
7,8
31
TEDS
Transducer Electronic Data according IEEE 1451.4
8
32
US-
Negative Bridge Supply
8
33
US+
Positive Bridge Supply
8
34
Q350
Quarter Bridge Completion 350 Ohm
8
35
UD+
Positive Differential Input
8
36
GNDE
Ground, Analog Input
8
37
UF-
Negative Sense Line (6-wire connection only)
8
38
UF+
Positive Sense Line (6-wire connection only)
8
39
Q120
Quarter Bridge Completion 120Ohm
8
40
UD-
Negative Differential Input
8
41
Q1k
Quarter Bridge Completion 1000Ohm
8
42
HB
Half Bridge Completion
8
43
UE
Analog Input Voltage, single ended ±10V
8
44
GNDIO
not equipped sep.galv.isol. (optional)
8

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
www.interfaceforce.com ●Email: [email protected] ●ORDER TOLL-FREE 800.947.5598
Page 18of 39
Connection strain gage quarter bridge
The active strain gage R3 is connected in
the 3-wire technology.
The completion resistors 120 Ohm (QB =
Q120), 350 Ohm (QB = Q350) and 1K Ohm
(QB = Q1k) are lead out on the connection
QB.
The internal half bridge R1, R2 is activated
with a bridge from HB to -Ud.
Connection strain gage half bridge
The active strain gages R3 and R4 are
connected on +Us, +Ud and -Us.
For very long wire lengths the sensor cable
+Uf and -Uf can be used.
The internal half bridge R1, R2 is activated
with a bridge HB to -Ud.
Connection strain gage full bridge
+Us
R1
R2
R4
R3
+Ud
-Ud
-Us
QB
HB
+Us
R1
R2
R4
R3
+Ud
-Ud
-Us
HB
+Uf
+Uf

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
www.interfaceforce.com ●Email: [email protected] ●ORDER TOLL-FREE 800.947.5598
Page 19of 39
The active strain gages R1 to R4 are
connected on +Us, -Us, +Ud, -Ud.
For very long wire lengths the sensor cable
+Uf and -Uf can be additionally used.
Connection of PT1000
The temperature sensor PT1000 is
connected in three-wire technology to the
terminals Q1K, UE and GNDE.
To measure temperature, the input type
"PT1000" must be activated once by
software.
Connection of the active sensors
The voltage signal of active sensors is applied to Ue and GNDE.
Potentiometric sensors can be supplied via +Us. The power supply for active sensors can
be via galvanic isolated voltage VCCIO and GNDIO.
+Us
R1
R2
R4
R3
-Ud
+Ud
-Us
-Uf
+Uf
Us+
1 KOhm
PT1000
UE
GNDE
Q1K

Interface Inc. ●7401 East Butherus Drive, Scottsdale, Arizona 85260 USA ●Phone [phone] ●Fax [phone]
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Page 20of 39
Analog Output SUB-D25 socket
Analog outputs voltage or current for channels 1 to 8.
Pin
Signal
Meaning
1
Ua1/ Ia1
Analog Out Channel 1
2
GNDA
Analog GND
3
Ua2/ Ia2
Analog Out Channel 2
4
GNDA
Analog GND
5
Ua3/ Ia3
Analog Out Channel 3
6
GNDA
Analog GND
7
Ua4/ Ia4
Analog Out Channel 4
8
GNDA
Analog GND
9
Ua5/ Ia5
Analog Out Channel 5
10
GNDA
Analog GND
11
Ua6/ Ia6
Analog Out Channel 6
12
GNDA
Analog GND
13
Ua7/ Ia7
Analog Out Channel 7
14
GNDA
Analog GND
15
Ua8/ Ia8
Analog Out Channel 8
16
GNDA
Analog GND
17
/
Internal usage
18
/
Internal sage
19
/
Internal usage
20
/
Internal usage
21
GNDINT
GNDINT
22
GNDINT
GNDINT
23
OutB-
60kHz frequency -6V Out
1
13
14
25