The standby start signal is provided locally or the standby start signal is provided remotely by the customer. This is done by establishing continuity between the "STANDBY START" contacts. When a standby start signal is received, the genset will automatically perform the following functions:
- Start
- Attain the rated speed and voltage.
- Close the generator circuit breaker onto the dead bus.
The customer must ensure that the load bus is disconnected from the utility supply. The customer must ensure that the load is less than the block loading capability of the genset. The generator circuit breaker will trip open when the generator circuit breaker receives a standby shutdown signal. This is done by establishing continuity between the "STANDBY STOP" contacts. The engine will run without a load for the cooldown period. Then, the engine will automatically shut down. The utility may then be reconnected to the load bus.
Ensure that all targets for the generator protective relays have been reset. Ensure that the emergency stop push buttons are reset.
Note: Examine the "UTILITY AUX CONTACT". If the indicator for "UTILITY BREAKER CLOSED" is illuminated, a jumper is installed at the "UTILITY AUX CONTACT" for peak shaving. This jumper is required for base load operation because the "UTILITY AUX CONTACT" contact is not available.
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| Illustration 1 | g00853858 |
"MAIN" Screen (1) Icon for the genset (2) Indicator for the state of the system (3) generator bus (4) Generator circuit breaker (5) Button for "START LOAD" (6) Button for "STOP UNLOAD" (7) Indicator for the mode of the system (8) Indicator for remote start enable (9) Setpoint for base load operation (10) Indicator for the position of the engine control switch (ECS) (11) Indicator for local mode or remote mode (12) Indicator for the status of the utility circuit breaker (13) Indicator for the status of the generator multifunction relay (GMR) (14) Indicator for the "UTTR TRIP" (15) Utility bus (16) Indicator for the status of the utility multifunction relay (UMR) (17) Button for the "MAIN" screen | |
Local Start For Standby Operation
Place the controls in the following positions:
| CONTROL | POSITION/SELECTION | ACTION |
| "DROOP-ISOCHRONOUS" switch | "ISOCHRONOUS" | Engine speed does not drop when a load is applied. |
| "IDLE"/"RATED" switch | "RATED" | Moves engine from "IDLE" speed to "RATED" speed. |
| Circuit breaker switch | "NAC" (1) | Enables closure of the generator circuit breaker. |
| Lockout relay | "RESET" | Removes the disabling (lockout) voltage from the switchgear. |
| "LOCAL"/"REMOTE" setpoint | "LOCAL" | Enables local start/stop from the "MAIN" screen of the touchscreen display. |
| "START/LOAD" on the "MAIN" screen | "START/LOAD" | Starts the engine. Closes the generator circuit breaker. (2) |
| "STOP/UNLOAD" on the "MAIN" screen | Not used | None |
| "SYNCHRONIZING" switch | Not used | None |
| Engine control switch | "AUTO" | Puts the switchgear in automatic mode. |
| Alarm switch | Not used | None |
| Manual load potentiometer | Not used | None |
| VAR/Power factor adjust potentiometer | Not used | None |
| "BASE LOAD START" (Remote) | No | None |
| "BASE LOAD STOP" (Remote) | No | None |
| "STANDBY START" (Remote) | No | None |
| "STANDBY STOP" (Remote) | No | None |
| ( 1 ) | Turn the handle of the circuit breaker switch to the fully clockwise position. Release the handle. The handle will return to the center position. The red target will be visible. |
| ( 2 ) | The generator circuit breaker will close automatically when all of the permissives have been met. |
Momentarily touch the button for "START LOAD" (5). The genset will automatically start. The genset will obtain rated speed and voltage. After the voltage has built up, the generator circuit breaker will automatically close. The generator will send power to all of the loads that are connected to the bus.
Local Stop For Standby Operation
Place the controls in the following positions:
| CONTROL | POSITION/SELECTION | ACTION |
| "DROOP-ISOCHRONOUS" switch | "ISOCHRONOUS" | Engine speed does not drop when a load is applied. |
| "IDLE"/"RATED" switch | "RATED" | Moves engine from "IDLE" speed to "RATED" speed. |
| Circuit breaker switch | "TRIP" | Opens the generator circuit breaker. |
| Lockout relay | "RESET" | Removes the disabling (lockout) voltage from the switchgear. |
| "LOCAL"/"REMOTE" setpoint | "LOCAL" | Enables local start/stop from the "MAIN" screen of the touchscreen display. |
| "START/LOAD" on the "MAIN" screen | Not used | None |
| "STOP/UNLOAD" on the "MAIN" screen | "STOP/UNLOAD" | Opens the generator circuit breaker. Places the engine in cooldown mode. |
| "SYNCHRONIZING" switch | Not used | None |
| Engine control switch | "AUTO" | Puts the switchgear in automatic mode. |
| Alarm switch | Not used | None |
| Manual load potentiometer | Not used | None |
| VAR/Power factor adjust potentiometer | Not used | None |
| "BASE LOAD START" (Remote) | No | None |
| "BASE LOAD STOP" (Remote) | No | None |
| "STANDBY START" (Remote) | No | None |
| "STANDBY STOP" (Remote) | No | None |
Momentarily press the button for "STOP UNLOAD". The generator circuit breaker will open. The engine will run without a load for the cooldown period. The engine will shut down.
Remote Start For Standby Operation
Place the controls in the following positions:
| CONTROL | POSITION/SELECTION | ACTION |
| "DROOP-ISOCHRONOUS" switch | "ISOCHRONOUS" | Engine speed does not drop when a load is applied. |
| "IDLE"/"RATED" switch | "RATED" | Moves engine from "IDLE" speed to "RATED" speed. |
| Circuit breaker switch | NAC (1) | Enables closure of the generator circuit breaker. |
| Lockout relay | "RESET" | Removes the disabling (lockout) voltage from the switchgear. |
| "LOCAL"/"REMOTE" setpoint | "REMOTE" | Disables local start/stop from the "MAIN" screen of the touchscreen display. |
| "START/LOAD" on the "MAIN" screen | Not used | None |
| "STOP/UNLOAD" on the "MAIN" screen | Not used | None |
| "SYNCHRONIZING" switch | Not used | None |
| Engine control switch | "AUTO" | Puts the switchgear in automatic mode. |
| Alarm switch | Not used | None |
| Manual load potentiometer | Not used | None |
| VAR/Power factor adjust potentiometer | Not used | None |
| "BASE LOAD START" (Remote) | No | None |
| "BASE LOAD STOP" (Remote) | No | None |
| "STANDBY START" (Remote) | A contact is applied. | Starts the engine. Closes the generator circuit breaker. (2) |
| "STANDBY STOP" (Remote) | No | None |
| ( 1 ) | Turn the handle of the circuit breaker switch to the fully clockwise position. Release the handle. The handle will return to the center position. The red target will be visible. |
| ( 2 ) | The breaker will close automatically when all permissives have been met. |
Wire the remote start contacts to the "STANDBY START" terminal connections. When the contacts for remote starting close for at least one second, the genset will start. The genset reaches the rated speed and voltage. The generator circuit breaker will close. Power is supplied to all connected loads.
Remote Stop For Standby Operation
Place the controls in the following positions:
| CONTROL | POSITION/SELECTION | ACTION |
| "DROOP-ISOCHRONOUS" switch | "ISOCHRONOUS" | Engine speed does not drop when a load is applied. |
| "IDLE"/"RATED" switch | "RATED" | Moves engine from "IDLE" speed to "RATED" speed. |
| Circuit breaker switch | "TRIP" | Opens the generator circuit breaker. |
| Lockout relay | "RESET" | Removes the disabling (lockout) voltage from the switchgear. |
| "LOCAL"/"REMOTE" setpoint | "REMOTE" | Disables local start/stop from the "MAIN" screen of the touchscreen display. |
| "START/LOAD" on the "MAIN" screen | Not used | None |
| "STOP/UNLOAD" on the "MAIN" screen | Not used | Opens the generator circuit breaker and places the engine in cool down. |
| "SYNCHRONIZING" switch | Not used | None |
| Engine control switch | "AUTO" | Puts the switchgear in automatic mode. |
| Alarm switch | Not used | None |
| Manual load potentiometer | Not used | None |
| VAR/Power factor adjust potentiometer | Not used | None |
| "BASE LOAD START" (Remote) | No | None |
| "BASE LOAD STOP" (Remote) | No | None |
| "STANDBY START" (Remote) | No | None |
| "STANDBY STOP" (Remote) | A contact is applied. | The generator circuit breaker is opened. The engine is placed in cooldown mode. |
Wire the remote stop contacts to the "STANDBY STOP" terminal connections. When the remote contacts close for at least one second, the generator circuit breaker will open. The engine will run without a load for the cooldown period. The engine will shut down.