9.0 Wind Turbine Operation | 77 |
Table
9.1.7.2 PLC Outputs
The following tables describe the PLC outputs needed to control the AOC 15/50. AC outputs are used to control interposing relays and contactors for the various wind turbine functions. DC outputs are used for driving the LED indicators.
Function | Description |
Dynamic brake contactor | Normally closed contacts are used to apply brake on loss of |
| power. |
Parking brake relay | Normally open contacts are used to apply brake on loss of |
| power. |
Tip brake relay | Normally open contacts are used to apply brake on loss of |
| power. |
Generator contactor | Connects generator to utility network. |
Condensation heater relay | Provides 150 W of heating to the generator and 50 W to the |
| parking brake to expel condensation. |
Transmission heater relay | Provides 75 W of heating to the transmission. |
Remote start output relay | Closure of N.O. contacts causes downstream turbine to start. |
(optional) |
|
Oil heater (optional) | Provides power to gearbox oil heater. |
Softstart relay (optional) | Closure of N.O. contacts bypasses softstart resistor |
| Table |
9.1.8 Control Systems Options
∙
∙Enclosure heater (typically 200 Watt).
∙
∙Tropical, marine (stainless steel) and arctic conditioned enclosures (heater and insulation).
∙Enhanced display functions and diagnostics.
§Over/under frequency.
§G59 compatible grid monitor for UK sites.
§PLC LCD display.
§Wind turbine run time meter.
∙Remote communications and data acquisition via RS 422 port.
9.2Emergency Operation
In case of any emergency, an emergency cutoff switch is provided externally on the control box. See Section 3.8 for emergency procedures.
NOTICE: Use of the material contained in this document is subject to the warning on page Iv and the disclaimer on page v of this document.
DOC012R02 | AOC 15/50 User Manual | Nov 2001 |
