digital audio
modular
processing system
C8000
Electrically Isolated GPI/O
C8817
features :
• Parallel remote interface GPI/O
• Electrically isolated I/Os
• 8 GPI by optical coupler with current source and bridge circuit
• Inverter for input logic
• 8 GPO (TALLY) relays with change over contact (N.O.)
• Inverter for output logic
• Electrically isolated 5V aux voltage supply
functional description:
Each of the 8 GPOs may be addressed from C8k modules (see module manual)
by sending a predefined GPO number to the CAN bus. The C8817 is permanently
listening to the CAN bus. If it reads such a number, the associated GPO
will be activated. There is a maximum of 127 GPO numbers.
The GPOs may be logically inverted, i.e. a N.O. relay contact becomes N.C.
If one of the 8 GPI inputs is activated, the C8817 will send a predefined
GPI number to the CAN bus. C8k modules are permanently listening
to the CAN bus for such numbers. If any of the C8k modules reads such a number,
the predefined action will be performed by the module.
There is a maximum of 127 GPI numbers. The GPIs may be logically inverted,
i.e. an input now needs 5V for de-activation.
principal GPI circuit :
At the GPI input there is a bridge circuit, i.e. you do not need to care about the polarity
of the input voltage. A current source in line with the optical coupler limits the current that is why
you can apply an input voltage between 5V and at most 30V to activate the GPI.
C8817-2_manual EN_150306.doc
digital audio
modular
processing system
C8000
Electrically Isolated GPI/O
electrical specifications:
GPI
On: External voltage of 5V or higher (max 30V) between GPI_x(a)
Off: External voltage lower than 2,5V between GPI_x(a) and
Duration: Minimum 50ms
GPO
Relay type: Change-over contact – N.O.
Contact rating: 1A/24 VDC 0,5 A/125 VAC/ max. 62,5VA
General
Backplane connector: Ref. to DIN41612, 64pin, a+b, male
Power supply: +5V DC
Consumption: Approx. 120mA
Dimensions: 3RU, 4HP, depth 160mm
Installation: Hot pluggable
and GPI_x(b)
GPI_x(b) max. 60 VDC / 30 W / max. 125
max. 60 VDC / 30 W / max. 125
C8817
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digital audio
modular
processing system
C8000
installation
Electrically Isolated GPI/O
C8817
CAN ADDR Set the CAN ADDR rotary encoder to an address, which is not in
use by another module of a C8000 frame (for details regarding
SW3A Towards the bottom enables the CAN “+16” address schema to
SW3B Not used, must be set towards the bottom.
INIT Pressing the INIT button during power up will initialize the module
CAN addressing, see C8000 system manual).
handle up to 32 modules. If "+16" is turned on, addresses set by
the rotary encoder counting from 0x10 to 0x1F.
parameters to factory default values.
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digital audio
connector :
connector :
modular
processing system
C8000
Electrically Isolated GPI/O
pin assignment of the GPI/O connectors
GPI
female 26 pin Sub-D
1 GPI_1a
2 GPI_2a
3 GPI_3a
4 GPI_4a
5 GPI_5a
6 GPI_6a
7 GPI_7a
8 GPI_8a
9
10
11
12
13
14
15
16
17
18
19 GPI_1b
20 GPI_2b
21 GPI_3b
22 GPI_4b
23 GPI_5b
24 GPI_6b
25 GPI_7b
26 GPI_8b
+5V
-5V
C8817
GPO
female 26 pin Sub-D
1 GPO_1_common
2 GPO_2_common
3 GPO_3_common
4 GPO_4_common
5 GPO_5_common
6 GPO_6_common
7 GPO_7_common
8 GPO_8_common
9
10 GPO_1_N.C.
11 GPO_2_N.C.
12 GPO_3_N.C.
13 GPO_4_N.C.
14 GPO_5_N.C.
15 GPO_6_N.C.
16 GPO_7_N.C.
17 GPO_8_N.C.
18
19 GPO_1_N.O.
20 GPO_2_N.O.
21 GPO_3_N.O.
22 GPO_4_N.O.
23 GPO_5_N.O.
24 GPO_6_N.O.
25 GPO_7_N.O.
26 GPO_8_N.O.
+5V
-5V
Important Note: The 5V isolated voltage supply is connected to both the GPI as well as the GPO
connector in parallel. It may be used for external wiring in case there is no system power supply for GPI/O
operation available.
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digital audio
modular
processing system
C8000
Electrically Isolated GPI/O
web browser based GUI
Set up of all configurations, parameters and functions via a web browser.
See also C8702 Frame Controller manual and respective firmware release notes.
Layout and functionality are related to firmware version 1.7.x of the C8702.
OVERVIEW The example below shows a C8817 (Name: “GPI-O FRAME”)
C8817
Clicking on the spanner tool within the module graphics of the C8817 will open the pages of the
module.
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digital audio
modular
processing system
C8000
DEVICE
Electrically Isolated GPI/O
C8817
INFO
Device Name You can assign the module a name (up to 16 digits).
Platform Hardware related information.
Parameter Version Indicates the implemented set of control parameters.
Firmware
Controller The module controller firmware version.
RESET
Restart Module <RESTART> performs a warm start (soft reset).
Initialize and Restore <INITIALIZE> restores the factory default values for all
Factory Defaults parameters of the module including all presets.
BACKUP / RESTORE
Backup Settings and <BACKUP> will put all active parameters and the content of all
Presets to File presets into an XML file. You may store such file on a PC.
Restore Settings and You may select [browse for] a matching XML file from a PC.
Presets from File <RESTORE> will overwrite all active parameters and the content
of the presets with the content of the backup file.
The name of the selected file will appear right from the
<Browse> button.
6/8
digital audio
modular
processing system
C8000
SETUP
Electrically Isolated GPI/O
C8817
Electrical Isolated This check box turns on an auxiliary 5V power supply.
5V Aux Voltage For smaller installation (where no centralized GPI/O supply is in
place) it may be used as the feed for the GPIs and or to drive
GPI Assignment Here you must assign the 8 physical GPIs a unique GPI number. If
Invert Input The check box inverts the logic of the GPI, i.e. an input which must
<TEST> The soft button allows to test the function without involving the
GPO Assignment Here you must assign a unique GPO number for the 8 physical
Invert Output The check box inverts the logic of the GPOs. A NC output
destinations of the GPOs.
the GPI is activated by an external voltage of 5V or higher, the
C8817 puts this number on the CAN bus as a GPIxyz On
command.
If the activation voltage disappears from the input, the C8817 puts
this number again on the CAN bus as a GPIxyz Off command.
normally be activated becomes inactive if you apply a voltage >3V.
source or destination modules for GPI/Os.
GPOs (relays). If the C8817 reads a GPOxyz On command on the
CAN bus it activates the respective relay. If the C8817 reads the
GPOxyz Off command on the CAN bus it deactivates that relay.
becomes a NO and vice versa.
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digital audio
modular
processing system
C8000
Electrically Isolated GPI/O
GPI/O CONVERSION
C8817
The GPI/O numbers within a C8k system are strictly separated (127 GPO numbers, 127 GPI numbers)
from each other so a hardware GPI/O module may distinguish between GPIs and GPOs. As a
consequence there is no way to connect the GPI/Os of two C8k modules by using the same GPI and
GPO number. The C8817 closes this gap. It offers the feature to convert GPO numbers into GPI
numbers. It is also possible to initiate several GPIs by one GPO. You may also invert a GPO to activate
a GPI at the start and the end of a GPO event.
Important Note! The system of GPI/Os throughout a C8k frame has no plausibility checking!
Great care must be taken to avoid same numbers being assigned to different functions, because it will
activate multiple functions, causing great confusion in bigger installations, e.g. where Junger HW remote
controller is in place or GPIs are connected with automation systems or GPOs are connected with other
management systems!
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