7
Instructional Booklet
IB013003EN
Effective June 2023
Instructions for installation, operation,
and maintenance of Magnum MR2
(integral racking)
EATON
www.eaton.com
Control options
There are three modes of operations available to interface with the
integrated racking controller:
1.
Handheld pendant (see Figure 18);
2.
Discrete I/O;
3.
Modbus communication .
Option 1
The handheld pendant can operate the integral racking device using
up to 30 ft . (9 .14 m) of Cat 5 /6 cable (installers may mount a RJ-45
jack on the front panel of the switchgear - see Figure 19) . The
Magnum breaker can be racked to the connect, test, or disconnect
positions by pressing the desired button while depressing the enable
button on the pendant . Magnum breaker position and error codes
are indicated on the pendant .
With the pendant plugged in,
discrete I/O and Modbus control are disabled.
This is a feature
that does not allow someone to operate the system remotely while
an operator is in close proximity of the switchgear .
Figure 18. Handheld pendant.
Option 2
Discrete I/O control allows the user to operate the integral racking
device via pushbuttons or PLC . These systems can be wired to a
central control room or to a remote panel located a safe distance
away from the switchgear equipment . If an error occurs while under
I/O control, all I/O breaker position indication lights will flash . The
pendant can then be plugged into a RJ-45 jack located on the front
panel of the switchgear (if included - see Figure 19) to read the error
code . Once the pendant is plugged in, I/O control is disabled until
the pendant is unplugged .
Table 2. Indication and control requirements
Indicating LEDs
Open/close interposing relays
Pushbuttons
24 Vdc, 20 mA
120 Vac coil
24 Vdc, 5 mA
Option 3
Modbus communication control allows the user to operate the
integral racking device via a SCADA system or multiple Modbus
interface communication systems . These systems can be wired to
a central control room or to a remote panel located a safe distance
away from the equipment . Error codes can be read with the
Modbus communication system . This would be a feature of the
assembly as a whole, not an individual breaker (for Modbus Interface
details, refer to “1C19667 Modbus interface .txt”) .
Figure 19. RJ-45 pendant jack.
Sequence of operations
Below is the basic sequence of operations to use the integrated
racking system . The operation steps are the same for each of the
control options (Pendant, I/O, and Modbus) .
The “Enable” button must be held to operate the pendant .
1.
Insert the breaker into the breaker cell .
a.
The breaker is now in the disconnect position .
b.
The solid green disconnect LED will be illuminated .
c.
To proceed further and rack the breaker to the connected
position, the breaker must be open . If the breaker is
closed, you will see an E5 code . Refer to the Diagnostics/
troubleshooting section for more details .
1.
It is recommended to close the door but not mandatory if
door safety switch is not included .
2.
Press the “Test” button while depressing the “Enable” button .
a.
The buttons can be released after the operation is selected .
b.
The breaker will then move to the test position .
3.
The green disconnect LED will turn off and the yellow test LED
will be illuminated .
a.
The secondary plugs will mate and the breaker will now have
control power .
b.
At this time the breaker open and close operations can be
electrically tested .
c.
To proceed further and rack the breaker to the connected
position, the breaker must be open . If the breaker is closed
you will see an E5 code . Refer to the error code section for
more details .
1.
It is recommended to close the door but not mandatory if
door safety switch is not included .
4.
Press the “Connect” button while depressing the “Enable”
button
a.
The buttons can be released after the operation is selected .
5.
The yellow test LED will turn off and the intermediate LED will
flash as the breaker is in motion .
6.
Once the breaker reaches the connect position, the solid red
connect LED will illuminate .
a.
The breaker is now in the connect position and can
be energized .
7.
To rack the breaker out, the breaker must be open . If the
breaker is closed you will see an E5 code . Refer to the error
code section for more details .
8.
Press the “Connect” or “Test” button while depressing the
“Enable” button to rack the breaker to the connect or test
position (respectively) .
a.
The buttons can be released after the operation is selected .
9.
The red connect LED will turn off and the intermediate LED will
flash as the breaker is in motion .
10.
Once the breaker reaches the test or disconnect position,
the solid yellow test LED or a solid green disconnect LED
will illuminate .
a.
If the breaker is in the test position, there is still control
power on the breaker and the open and close operations can
be electrically tested .
b.
If the breaker is at the disconnect position, the secondary
plugs will be disconnected and there will not be any
power on the breaker . The eight tertiary points will still be
connected to allow further MR2 racking operations .
