Siemens SIERS 2.0 Instruction Manual page 23

Tip(s): When control power is not available in
the switchgear, then use 120 VAC power via
external power outlet in the electrical room or
area to operate SIERS 2.0 to remotely rack the
auxiliary truck.
The following steps describe the operation sequence
using the HMI to rack an auxiliary truck.
1. Remove HMI from the control cabinet or
compartment along with PROFINET cable.
2. Plug in the PROFINET cable stored with the CPU
and controls into the port located on the front of
the SIERS low voltage compartment door or the on
the front side of the SIERS control cabinet.
IMPORTANT: When first time operating SIERS,
start with auxiliary truck in the DISCONNECT
position. On a de-energized lineup use the
manual racking crank provided with the
accessories to rack the auxiliary truck to the
DISCONNECT position in the compartment.
3. Starting with the auxiliary truck in the
DISCONNECT position.
4. Follow the relevant instruction manual for
GM-SG or GM-SG-AR switchgear.
a. The auxiliary truck is now in the DISCONNECT
position.
b. The solid green indication (for DISCONNECT)
on the HMI display will illuminate.
5. Ensure the auxiliary compartment door is closed
and latched. If the door is not closed, SIERS will
be disabled; and alarm will indicate on the HMI
screen.
IMPORTANT: The molded-case circuit breaker
must be OPEN, to disconnect secondary side of
the CPT. Reference switchgear instruction
manuals for instructions.
SIERS 2.0 Siemens Integrated Electrical Racking System Instruction Manual
6. Before racking an auxiliary truck with Control
Power Transformer (CPT) or fuse rollout truck for
a CPT, the secondary molded-case circuit breaker
(MCCB) must be opened, and the key interlocked.
Note: This step is not required for voltage
transformer (VT) truck.
7. After step 6 above is performed, SIERS can be
used to rack the auxiliary truck.
8. When the auxiliary truck begins to move, the
green indication (for DISCONNECT) will turn off.
9. When the auxiliary truck reaches the CONNECT
position, the red indication (for CONNECT) will
turn on.
a. The auxiliary truck is now in the CONNECT
position and the molded case secondary
circuit breaker can be turned on; for CPT or
fuse truck, the secondary molded-case circuit
can be turned on. Note: Follow the instructions
in the relevant GM-SG or GM-SG-AR instruction
manual.
10. To rack the auxiliary truck from CONNECT to
DISCONNECT, the molded-case secondary circuit
breaker must be opened and interlocked with
the kirk key features (CPT rollout tray or CPT fuse
rollout tray only).
11. For CPT or fuse truck, once the molded-case
secondary molded-case circuit breaker is opened
(turned off) and interlocked, SIERS can be used
to rack the CPT or fuse truck to the DISCONNECT
position.
12. Touch DISCONNECT on the HMI display.
The auxiliary truck will move towards the
DISCONNECT position.
13. The red indication (for CONNECT) will turn off.
Once the auxiliary truck reaches the DISCONNECT
position, the green indication (for DISCONNECT)
will turn on.
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