User Interface - S&C PureWave SMS-250 Operation And Maintenance

Components and Controls

User Interface

8 S&C Instruction Sheet 659-520
The PureWave SMS-250 can be controlled through the user interface located at the top
left side of the unit. Figure 5 shows the controls available on the user interface.
Figure 5. User interface.
The controls on the user interface are as follows:
−This switch enables the user to switch control from SCADA mode
SMS CONTROL
(SCADA ENABLE) to HMI mode (SCADA DISABLE) and vice versa.
−This black pushbutton, when pressed, enables the user to administer a manual
RESET
reset.
− This red pushbutton, when pressed, enables the user to stop any run-
INVERTER STOP
ning operation. Pushing this button will open the ac and dc circuit breakers.
WEB SERVER CONNECTION
to the system via Human Machine Interface (HMI) mode.
−This key-lock is used when any work or maintenance requires the
PRE-CHARGE
inverter to be de-energized. When the inverter stop pushbutton is pressed and the pre-
charge key is turned to the OFF position (ac and dc circuit breakers are open), the
inverter bridge will discharge to a safe level in 5 minutes.
Capacitors in the PCS may have residual charge after the pre-charge key has been
turned off . If there is no load connected to the unit, wait 5 minutes for the capacitors to
discharge before proceeding with work or maintenance .
When the pre-charge key-lock is in the OFF position, the key can be removed. The
inverter bridge will remain de-energized until the key is placed back in and turned to the
ON position (and source power is restored). Once the key-lock is in the ON position, the
key cannot be removed unless it is turned back to the OFF position.
−The user can use this connection port to connect locally
WARNING