Siemens SWT 3000 Equipment Manual page 132

Installation and Commissioning
3.5 Device Configuration
•
In operating mode 5D with digital transmission path, there are 8 inputs and outputs available. With
special allocation Contact doubling and 4 Interface modules IFC-D/P the IFC-1 output commands OUT1
to OUT4 are doubled to outputs on IFC-2. The IFC-3 output commands OUT5 to OUT8 are doubled on
IFC-4. Contact doubling with only 2 Interface modules IFC-D/P is possible, but the transmittable
commands are reduced to 4 commands then. The available output commands OUT1 to OUT4 of IFC-1 are
doubled to outputs on IFC-2.
Refer also to
Operation mode 3a / 3b / 5D are based on free allocation and each command can be allocated with any vacant
IFC ports. In this case, the option "contact doubling" is just a preset configuration and the user is still able to
reallocate the ports if necessary.
NOTE
i
i
Check the Input Configuration submenu in the SWT 3000 > Configuration menu.
The special allocation Contact doubling can only be enabled when IFC-S is not configured.
2CMD+ACK
With the function Two Commands with Acknowledge (2CMD+ACK) the first input on each Interface module
IFC-D/P is fixed allocated to a signaling output in the local SWT 3000 device. Additionally the first command
output relay of each Interface module IFC-D/P is fixed allocated to another signaling output at local side.
Figure 3-23 shows the scheme of signaling allocation for the acknowledge of the corresponding command
inputs and outputs.
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Figure 3-23
Originally designed for 2 IFC modules the feature is enhanced for the transmission of up to 4 commands with
acknowledge and 4 additional commands without acknowledge, if 4 IFC-D/P modules are inserted in SWT
3000. There are 8 inputs from IFC-1 to IFC-4 available in operating mode 5D while 2CMD+ACK is configured in
the Special allocation list box. Only the first 2 binary inputs of each IFC modules are enabled. In the following
table, the enabled inputs and their allocation to Signaling outputs at the local side ("Acknowledge") and
command outputs at remote side are listed:
132
8.1.3 Exclusively Digital Transmission
Two Commands with Acknowledge (2CMD+ACK)
Interfaces.
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020