Control using
communications system
and discrete I/O
Control using hand-held control pendant
The hand-held control pendant can be used
to operate the SIERS racking system from a
distance of up to 30 ft (9.1 m) from the
equipment through 9C/18 AWG cable using a
24 Vdc signal connected through a 9-pin
socket located in the low-voltage
compartment. The isolating switch can be
operated to CLOSE/CONNECT or OPEN/
DISCONNECT position by pressing the
desired button on the pendant. The TEST
position pushbutton is disabled and if it is
pushed, no action will occur. The pendant
also includes an amber light for error or
malfunction indication.
Control using hand-held
control pendant
Control using communications system
and discrete I/O
Discrete I/O control (optional) allows the
user to operate the SIERS racking system via
a PLC or protection relay input/output
signals. These systems can be wired to a
central control room or to a remote panel
located away from the controller equipment.
It can be wired to have the signal indicating
the current position of the isolating switch
and an error light, thus providing the same
indications as the hand-held control
pendant.
Figure 6: Connector for control
pendant cable connection
Figure 5: Hand-held control pendant
9
Instruction manual
| SIERS Siemens Integrated Electrical Racking System
