Overview
The “Frequency rate of change” element responds to rate of change of frequency with voltage, current and frequency supervision.
For more detailed information on “Frequency rate of change” element, 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 |
| D30, D60, F60, G30, G60, L30, L90, N60, T60 | 6CAE | Frequency Rate of Change 1 Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 6CAF | Frequency Rate of Change 1 OC Supervision | 0.02 to 30 | pu | 0.001 | F001 | 200 |
| " | 6CB0 | Frequency Rate of Change 1 Min | 20 to 80 | Hz | 0.01 | F001 | 4500 |
| " | 6CB1 | Frequency Rate of Change 1 Max | 20 to 80 | Hz | 0.01 | F001 | 6500 |
| " | 6CB2 | Frequency Rate of Change 1 Pickup Delay | 0 to 65.535 | s | 0.001 | F001 | 0 |
| " | 6CB3 | Frequency Rate of Change 1 Reset Delay | 0 to 65.535 | s | 0.001 | F001 | 0 |
| " | 6CB4 | Frequency Rate of Change 1 Block | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6CB6 | Frequency Rate of Change 1 Target | 0 to 2 | — | 1 | F109 | 0 (Self-reset) |
| " | 6CB7 | Frequency Rate of Change 1 Events | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 6CB8 | Frequency Rate of Change 1 Source | 0 to 5 | — | 1 | F167 | 0 (SRC 1) |
| " | 6CB9 | Frequency Rate of Change 1 Trend | 0 to 2 | — | 1 | F224 | 0 (Increasing) |
| " | 6CBA | Frequency Rate of Change 1 Pickup | 0.1 to 15 | Hz/s | 0.01 | F001 | 50 |
| " | 6CBB | Frequency Rate of Change 1 OV Supervision | 0.1 to 3 | pu | 0.001 | F001 | 700 |
| " | 6CBC | Reserved (3 items) | 0 to 1 | — | 1 | F001 | 0 |
| " | 6CBF | …Repeated for Frequency Rate of Change 2 | |||||
| D60, F60, G30, G60, L90, N60, T60 | 6CD0 | …Repeated for Frequency Rate of Change 3 | |||||
| " | 6CE1 | …Repeated for Frequency Rate of Change 4 |
| F102 | 0 = Disabled, 1 = Enabled | ||||||
| F109 | 0 = Self-reset, 1 = Latched, 2 = Disabled | ||||||
| F167 | 0 = SRC 1, 1 = SRC 2, 2 = SRC 3, 3 = SRC 4, 4 = SRC 5, 5 = SRC 6 | ||||||
| F224 | 0 = Increasing, 1 = Decreasing, 2 = Bidirectional | ||||||
Logics & highlights
Frequency rate of change logic
