12
Instructional Booklet
IB022010EN
Effective July 2019
Revision #4
Instructions for installation, operation,
and maintenance of medium voltage
VC-W MR2 (integral racking)
EATON
www.eaton.com
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 the RJ-45 jack located on the front
panel of the switchgear - (see
) to read the error code .
Once the pendant is plugged in, I/O control is disabled until the
pendant is unplugged .
MR2 5 VDC
20 mA
MR2 O/C 24 VDC
20 mA
**include typical schematics**
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 . Eaton can supply an installed
Modbus system or the Modbus addresses to the customer for
their personalized Modbus system and programming (for Modbus
Interface details, refer to “1C19667 MODBUS interface .txt”) .
Figure 14. RJ-45 pendant jack.
Callout descriptions
a
d
f
c
e
g
b
Figure 15. Typical MR2 – standard breaker pan assembly.
1.
VC-W MR2 motor/controller assembly .
2.
Manual crank safety permissive switch: disables the motor if an
operator were to insert a manual tool to rack the circuit breaker .
3.
“Disconnect” positional limit switch: activated when the circuit
breaker is in the disconnected position .
4.
“Connect” positional limit switch: activated when the circuit
breaker is in the connected position .
5.
“Test” positional limit switch: activated when the circuit breaker
is in the “Test” position .
6.
Limit switch actuator .
7.
Lev-in lead screw .
