Signal Acquisition Via Binary Inputs - Siemens SWT 3000 Equipment Manual

Interface Command Module
8.1 General Information
IFC_SLOT_N
1
0
0
0
0
For connecting the redesigned IFCs to PU4, all IFCs are connected in parallel on a ribbon cable (26 pins) for
TPi-Bus to the PU4 module.
NOTE
i
i
If the new IFC board is used as spare part in SWT 3000 with the PU3 module, use a suitably configured
ribbon cable for the slot identification function. For the selection of PU3 on the IFC module.
For more details, refer to
The IFC controller manages the input register (IFC_EREG) which is readable by PU4 controller. The PU4
controller can identify the IFC type (IFC-D/P or IFC-S) by reading the content of IFC_EREG.
IFC-P, IFC-D and IFC-S boards are based on the same Printed Circuit Board (PCB). The type depends on the
various hardware assembling options. The assembling options can be identified via the status of the TYPE
input of the IFC controller.
[dwifctyp-051011-01.tif, 1, en_US]
Figure 8-7
The assembling of the resistors RbtH and RbtL depends on the specific board type. The state of the board type
input is readable by PU4 controller.
Table 8-4
RbtH
Not installed
22 KΩ

Signal Acquisition via Binary Inputs

8.1.8
If the binary inputs (BI1 to BI4) of the module detect a signal, an interrupt request is sent to the PU4. The IFC
module is connected to the PU4 via a ribbon cable via connector X3 at the front. If an interrupt is detected,
PU4 can read the status of the binary inputs.
In order to suppress interference pulses, a signal must be applied to the binary input for at least 1 ms before
the interrupt request is sent. The following figure shows the block diagram of a binary input:
324
IFC_CS1_N IFC_CS2_N
0 0
0 1
1 0
1 1
0 0
Table 8-3.
Principle of IFC Type Identification
IFC Type Configuration
RbtL TYPE
0 Ω 0
Not installed 1
Function
Reset PIC on IFC-1 to IFC-4
Select IFC-1
Select IFC-2
Select IFC-3
Select IFC-4
Comment
IFC-D or IFC-P
IFC-S
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020