Overview
The per-unit “volts per hertz” value is calculated using the maximum of the three-phase voltage inputs or the auxiliary voltage channel Vx input, if the source is not configured with phase voltages. If there is no voltage on the relay terminals in either case, the per-unit V/Hz value is automatically set to “0”.
For more detailed information on “Volts per hertz” 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 |
| G30, G60, L90, T60 | 6A28 | Volts Per Hertz 1 Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 6A29 | Volts Per Hertz 1 Source | 0 to 5 | — | 1 | F167 | 0 (SRC 1) |
| " | 6A2A | Volts Per Hertz 1 Pickup | 0.8 to 4 | pu | 0.01 | F001 | 80 |
| " | 6A2B | Volts Per Hertz 1 Curves | 0 to 7 | — | 1 | F240 | 0 (Definite Time) |
| " | 6A2C | Volts Per Hertz 1 TD Multiplier | 0.05 to 600 | — | 0.01 | F001 | 100 |
| " | 6A2D | Volts Per Hertz 1 Block | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 6A2F | Volts Per Hertz 1 Events | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 6A30 | Volts Per Hertz 1 Target | 0 to 2 | — | 1 | F109 | 0 (Self-reset) |
| " | 6A31 | Volts Per Hertz 1 T Reset | 0 to 1000 | s | 0.1 | F001 | 10 |
| " | 6A32 | Volts Per Hertz 1 Voltage Mode | 0 to 1 | — | 1 | F186 | 0 (Phase-to- Ground) |
| " | 6A33 | …Repeated for Volts Per Hertz 2 |
| 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 | ||||||
| F186 | 0 = Phase to Ground, 1 = Phase to Phase | ||||||
| F240 | 0 = Definite Time, 1 = Inverse A, 2= Inverse B, 3 = Inverse C, 4 = FlexCurve A, 5 = FlexCurve B, 6 = FlexCurve C, 7 = FlexCurve D | ||||||
Logics & highlights
Volts per hertz logic
Definite time characteristic
Inverse curve A characteristic
Inverse curve B characteristic
Inverse curve C characteristic
