Inter-Trip Example Using Fascia Function Keys To Operate Cbs - Siemens 7SR18 Solkor Manual

7SR18 Applications Guide
6.6.2

Inter-trip example using Fascia Function Keys to operate CBs.

The CBs of both Local and Remote Relays can be operated by the operation of a fascia Function Key.
Local Control of CBs can be achieved by programming function keys F1 & F2 as shown in Figure 6.6.2-1. &
Figure 6.6.2-2.
Function Keys F3 & F4 on the local relay can be used to control the remote relay CB as shown in Figure 6.6.2-3
to Figure 6.6.2-7. This is achieved by utilising a Quick Logic equations E1 & E2 set-up to provide an output in the
Output Matrix when a Function Key is pressed. The equation E1 is set-up as in Figure 6.6.2-3, such that when
Function Key F3 is pressed, E1 is 'True' producing an output which is mapped in the Output Matrix to V1, see
Figure 6.6.2-5. Similarly with F4 pressed, E2 is 'True' producing an output which is mapped in the Output Matrix
to V2. These Virtuals connect to the Input Matrix and are mapped to Inter-trip channels 85S-5 & 85S-6. These
send the inter-trip signal to the Remote Relay Output Matrix 85R-5 & 85R-6 see Figure 6.6.2-6, which are in-turn
mapped to Binary Output contacts BO4 & BO5, these could be connected to the CB trip and close coils.
Figure 6.6.2-1 Local Relay Function Key Programming for Local CB Control
Figure 6.6.2-2 Local Relay Binary Output Mapping for Local CB Control
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