Siemens 3AD8 User Manual

KMS-0021
80
2022-02-10
3 Once the control is successfully applied, the LEDs on the panel will change to reflect the
new state of the Fusesavers. There can be a delay of 5-10s before the state update
occurs.
4 If the control was not successfully applied then the LEDs will stop blinking and the
Fusesaver state will remain as previously indicated.
The operator panel can be turned OFF by pressing the “Panel ON” button again (the LED lights will
go out), or by closing the RCU door.
Each of the buttons on the Fusesaver Operator Control Panel has the following functionality.
8.2.1 Panel ON
The Control Panel will be off when the cubicle door is opened and is turned on by pressing the Panel
ON button. When the Control Panel is on the LED adjacent to the Panel ON Button will be lit. The
Control Panel can be turned off by pressing the Panel ON button while the panel is already on or by
closing the RCU door. When the Control Panel is off no LEDs will be lit.
8.2.2 Fusesaver Status
The Fusesaver status LEDs indicate the current status for each phase of the Fusesaver line. If no
LED is lit for a phase this means No Data is available for that phase. The Fusesaver statuses are:
 Fusesaver Line Current is ON or OFF
 Fusesaver External Lever is UP or DOWN
 Fusesaver Protection is RUNNING or HALTED.
8.2.3 Fusesaver Control Source
The control source LEDs indicate who has permission to send controls to the Fusesavers connected
to the RCU. The possible control sources are:
 Local: This Control Panel is allowed to issue controls to the Fusesavers connected to the RCU.
If the Local LED is not lit then all Fusesaver controls from the Control Panel will be rejected. This
includes both trip/close and protection controls.
 Remote: The remote operator, i.e. the SCADA operator, is allowed to issue controls to the
Fusesavers connected to the RCU. If the Remote LED is not lit then all Fusesaver controls from
the remote operator will be rejected.
 Siemens Connect: A Siemens Connect session is currently in progress with the Fusesavers and
is allowed to send trip/close controls to the Fusesavers. All Fusesaver controls originating from
the RCU, whether they are local or remote, will be rejected.
8.2.4 Control in Progress
This LED will flash to indicate that a control issued by the Fusesaver Control Panel is in progress.
The Control-in-progress LED will stop flashing when one of the following conditions is met:
 The control has been sent to the Fusesavers and the control is successful, e.g. Close Control
has been sent and all phases are now closed.
 The control has been sent to the Fusesavers but the control has timed out after 70 seconds
without being successful, e.g. Close control has been sent but not all phases are closed after 70
seconds.
No further panel controls are allowed while the control in progress LED is flashing. The typical time
for a protection control to be applied is 10-20sec and for a trip or close control is 40-60sec.
8.2.5 Fusesaver Operate
The Fusesaver Trip/Close LEDs indicate the current open/close state for each phase of the
Fusesaver Line.
If no LED is lit for a phase this means there is No Data available for that phase.

Siemens 3AD8 Specifications

General

Brand	Siemens
Model	3AD8
Category	Control Unit
Language	English