Overview
The “Directional comparison blocking 1” scheme (DCB1) operates the same way as the Directional Comparison Blocking (DCB) scheme, except hard- coded connections to phase and ground distance elements are removed to allow the user to choose FlexLogic operands to identify forward or reverse direction fault, such as ground OC directional elements for example. This gives the user more flexibility and better coordination when employing this scheme.
For more detailed information on “Directional comparison blocking 1” scheme (DCB1), refer to GE, Universal Relay (UR) family of products, Version 8.0x manuals.
To see other supported elements, click here.
Setting Parameters
Modbus memory map for Setting parameters
| Products | Hex address | Register name | Range | Units | Step | Format | Default |
| D60, L90 | 6C5A | Blocking 1 Scheme 1P Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 6C5B | Blocking 1 Scheme 1P Block | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C5D | Block 1 1P Rx Coord Pickup Delay | 0 to 65.535 | s | 0.001 | F001 | 10 |
| " | 6C5E | Block 1 1P Transient Block Pickup Delay | 0 to 65.535 | s | 0.001 | F001 | 30 |
| " | 6C5F | Block 1 1P Transient Block Reset Delay | 0 to 65.535 | s | 0.001 | F001 | 90 |
| " | 6C60 | Blocking 1 Scheme 1P Seal in Delay | 0 to 65.535 | s | 0.001 | F001 | 0 |
| " | 6C61 | Blocking 1 Scheme 1P Dir Fwd 1 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C63 | Blocking 1 Scheme 1P Dir Fwd 2 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C65 | Blocking 1 Scheme 1P Dir Fwd 3 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C67 | Blocking 1 Scheme 1P Dir Rev 1 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C69 | Blocking 1 Scheme 1P Dir Rev 2 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C6B | Blocking 1 Scheme 1P Dir Rev 3 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C6D | Blocking 1 Scheme 1P Force Tx Stop 1 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C6F | Blocking 1 Scheme 1P Force Tx Stop 2 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C71 | Blocking 1 Scheme 1P Comm Bits | 0 to 2 | — | 1 | F198 | 0 (1) |
| " | 6C72 | Blocking 1 Scheme 1P Rx1 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C74 | Blocking 1 Scheme 1P Rx2 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C76 | Blocking 1 Scheme 1P Rx3 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C78 | Blocking 1 Scheme 1P Rx4 | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6C7A | Blocking 1 1P Target | 0 to 2 | — | 1 | F109 | 0 (Self-reset) |
| " | 6C7B | Blocking 1 1P Event | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| F102 | 0 = Disabled, 1 = Enabled | ||||||
| F109 | 0 = Self-reset, 1 = Latched, 2 = Disabled | ||||||
| F198 | 0 = 1, 1 = 2, 2 = 4 | ||||||
Logics & highlights
Directional comparison blocking1 scheme logic
