Eaton VC-W MR2 Installation and operation manual

Contents
Description Page
Notices and warnings ......................4
Introduction ..............................4
Eaton contact information .................4
Pan configurations .........................5
Permissive interlocks.......................5
Operational interlock features ..............5
Lockout-tagout ..........................7
Diagnostics/troubleshooting .................8
E1: Motor overcurrent ....................8
E2: Open motor circuit....................8
E3: Motor timed out .....................9
E4: MV device position “unknown”..........9
E5: Open permissive .....................9
Instructions for installation, operation,
and maintenance of medium voltage
VC-W MR2 (integral racking)
Description Page
E6: Communication error ..................9
E7: No MV device .......................9
E8: Firmware compatibility error ............9
E9: No test (MR2 open/close only) ..........9
Controller diagnostic display .................9
Setting the gear type.......................9
Setting the Modbus address ................10
Manual racking ..........................10
Control options ..........................11
Option 1 ..............................11
Option 2 ..............................12
Option 3 ..............................12
Callout descriptions .......................12
Sequence of operations ...................13
Instructional Booklet IB022010EN Effective July 2019 Revision #4

2
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

3
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
Disclaimer of warranties and limitation of liability
This instruction booklet is published solely for information purposes
and should not be considered all-inclusive. If further information is
required, you should consult an authorized Eaton sales representative.
The sale of the product shown in this literature is subject to the
terms and conditions outlined in appropriate Eaton selling policies
or other contractual agreement between the parties. This literature
is not intended to and does not enlarge or add to any such contract.
The sole source governing the rights and remedies of any purchaser
of this equipment is the contract between the purchaser and Eaton.
NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE
OR MERCHANTABILITY, OR WARRANTIES ARISING FROM
THE COURSE OF DEALING OR USAGE OF TRADE, ARE MADE
REGARDING THE INFORMATION, RECOMMENDATIONS, AND
DESCRIPTIONS CONTAINED HEREIN.
In no event will Eaton be responsible to the purchaser or user in
contract, in tort (including negligence), strict liability or otherwise
for any special, indirect,incidental or consequential damage or loss
whatsoever, including but not limited to damage or loss of use of
equipment, plant or power system, cost of capital, loss of power,
additional expenses in the use of existing power facilities, or claims
against the purchaser or user by its customers resulting from the
use of the information, recommendations and description contained
herein.

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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
Notices and warnings
mNOTICE
ALL USERS OF THIS PRODUCT SHOULD READ AND FOLLOW THE
INSTRUCTIONS PROVIDED HEREIN; HOWEVER, THIS INSTRUCTION BOOK
SHOULD NOT BE CONSIDERED ALL INCLUSIVE REGARDING INSTALLATION
OR MAINTENANCE PROCEDURES. IF FURTHER INFORMATION IS
REQUIRED, YOU SHOULD CONSULT EATON’S ELECTRICAL SERVICES &
SYSTEMS.
READ AND UNDERSTAND THIS AND OTHER SUPPLIED INSTRUCTIONS
AND DRAWINGS IN THEIR ENTIRETY BEFORE INSTALLING OR OPERATING
THIS DEVICE. ADJUSTMENT, REPAIR OR MAINTENANCE, OTHER THAN
THOSE DESCRIBED HEREIN, MUST BE PERFORMED BY QUALIFIED
PERSONNEL. A QUALIFIED PERSON IS ONE WHO IS FAMILIAR WITH
THE CONSTRUCTION AND OPERATION OF THIS EQUIPMENT AND THE
HAZARDS INVOLVED.
mWARNING
IMPROPER USE OR MAINTENANCE OF THIS PRODUCT, OR OPERATING
IT IN A MANNER FOR WHICH IT WAS NOT INTENDED, MAY RESULT IN
DEATH, SERIOUS PERSONAL INJURY, OR PROPERTY DAMAGE.
READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING
ANY OPERATION OR MAINTENANCE OF THE CIRCUIT BREAKERS OR
AUXILIARIES TO BE OPERATED BY THIS DEVICE.
ALL SAFETY CODES, SAFETY STANDARDS, AND/OR REGULATIONS AS
THEY MAY BE APPLIED TO THIS TYPE OF EQUIPMENT MUST BE STRICTLY
ADHERED TO.
mNOTICE
THE DANGER, WARNING, AND CAUTION MESSAGES INCLUDED AS A
PART OF THE PROCEDURAL STEPS IN THIS MANUAL ARE FOR PERSONNEL
SAFETY AND PROTECTION OF EQUIPMENT FROM DAMAGE. AN
EXAMPLE OF A TYPICAL WARNING LABEL HEADING IS SHOWN ABOVE
THIS PARAGRAPH TO FAMILIARIZE PERSONNEL WITH THIS TYPE OF
PRESENTATION. THIS WILL HELP ASSURE THAT PERSONNEL ARE ALERT
TO THESE TYPES OF MESSAGES. IN ADDITION, THESE MESSAGES ARE
ALL UPPERCASE AND BOLDFACE.
This product is manufactured by Eaton at the Greenwood Assemblies
Plant: 2210 Hwy 72/221, Greenwood, SC 29649.
All possible contingencies which may arise during installation,
operation, or maintenance, and all details and variations of this
equipment are not encompassed by these instructions. If further
information is desired by purchaser regarding particular installation,
operation, or maintenance of particular equipment, contact an Eaton
sales or service representative.
Introduction
Switchgear with the VC-W MR2 integral racking option allows an
operator to remotely rack a VCP-W breaker or auxiliary drawer
from a distance of 30 ft. (9.14 m) or greater depending on the
communication option installed. The integral racking assembly
consists of a controller and a motor mounted in the rear of the
breaker or auxiliary pan assembly, as well as safety and component
position sensing devices located on the racking mechanism of the
breaker and auxiliary pan assembly. The controller accepts 120 Vac
and supplies power to the motor based on user input. The position
of the VCP-W breaker or auxiliary drawer is detected by two limit
switches located on the side of the racking mechanism.
mDANGER
WHEN SWITCHGEAR IS CERTIFIED TO BE ARC-RESISTANT PER
ANSI/IEEE®STD. C37.20.7, THE ARC-RESISTANT RATING IS ONLY VALID
WHEN ALL DOORS ARE CLOSED AND PROPERLY LATCHED OR BOLTED,
AND ALL COMPONENTS ARE INSTALLED AND WORKING PROPERLY.
IN ADDITION, REMOVAL OF ANY BREAKER FROM ITS CELL WITHOUT
REINSTALLING A BREAKER OR ARC-RESISTANT PROVISION COVER WILL
VOID THE ARC-RESISTANT RATING.
Eaton contact information
For additional information about Eaton products please call 1-800-
525-2000 or log onto www.eaton.com. Additional Medium Voltage
Switchgear information regarding Pricing/Aftermarket, Customer
Service, Engineering/Technical Information, or Warranty, can be
found by calling 1-800-345-4072.
Eaton Electrical Services and Systems (EESS) can be reached at
1-800-498-2678.
If further information is desired regarding this particular installation
or application information, contact the local Eaton sales office,
reference Eaton’s Consulting Application Guide, or the appropriate
industry standards.

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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
Pan congurations
Integrated racking is available for all voltage ratings. For 5/15 kV and
27 kV switchgear, there is an optional “Test” position available. The
“Test” position is a physically different position in this assembly,
and the breaker can be racked from “Disconnect” to “Test”, “Test to
Connect”, or in any other order selected by the operator. See below
for what positions are available for each voltage rating.
Voltage
class (kV)
Breaker
cell width
in inches Breaker positions available Auxiliary positions available
5/15 36.00 Disconnect and Connect Disconnect and Connect
5/15 a36.00 Disconnect, Test, and Connect Disconnect and Connect
5 26.00 Disconnect and Connect N/A
27 36.00 Disconnect and Connect N/A
27 b36.00 Disconnect, Test, and Connect N/A
38 42.00 Disconnect and Connect N/A
a Optional “Test” position with Breaker Position Indication (BPI) pan only.
b Optional “Test” position available with non-arc gear equipped with BPI pan only.
Permissive interlocks
Operational interlock features
There are multiple permissive interlocks features built into the
controller programming, and error codes are displayed on the
pendant. There are three standard permissive interlocks wired for
every breaker cell with integrated racking and one for every auxiliary
cell with integrated racking.
Breaker cell specific interlocks:
1. Normally closed mechanism-operated compartment (MOC)
contact wired into the controller programming permissive circuit
(breaker cell only). Part of the E5 error code circuit (see
Figure 1).
a. If the MV circuit breaker is closed, this circuit will open and
the motor will not run.
b. This permissive uses only the controller programming to stop
the motor from being powered on.
2. Normally closed MOC contact wired in series with the black
motor lead (breaker cell only). Part of the E2 error code circuit
(see Figure 1).
a. This wrks the same as the first MOC permissive.
b. Used as a redundant interlock in case the first MOC
permissive fails.
c. This contact breaks the power to the motor for a more
hardwired permissive.
Breaker cell and auxiliary cell interlocks:
1. Normally closed manual crank permissive switch located on the
right side of the Lev-in assembly (breaker and auxiliary cell) (see
Figure 15 and 16). Part of the E5 error code circuit (see Figure 1).
a. This permissive is opened if an operator inserts a tool into
the manual crank of the Lev-in assembly.
b. This prevents someone from operating the motor while a
person is manually racking the MV circuit breaker or auxiliary.
In addition to the permissive contacts mentioned above,
the controller will accept as many normally closed permissive
contacts wired in series with permissive #1 and #3 as specified
(see Figure 1- circuit board wiring points).

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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
Figure 1. Permissive wiring diagram for MR2.
Figure 2. Permissive wiring diagram for MR2 O/C.
MOC contact/
LV breaker
For troubleshooting
jumper terminals 51
to 54 to bypass E5
error circuit.
CAUTION - by
jumpering terminals
51 to 54 you have
defeated the inter-
lock circuit.
For troubleshooting
move the black mo-
tor lead on terminal
47 to terminal 44
to bypass E2 error
circuit.
CAUTION - by mov-
ing the black motor
lead the redundant
MOC contact is
removed from the
circuit.
Manual Crank Switch
Optional permissive contact
(per customer specification)
MOC Contact/LV breaker
Black Motor Lead
E5 Error Circuit
E2 Error Circuit
Jumper trace built into
the controller card
Jumper trace built into
the controller card
MOC Contact

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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
Lockout-tagout
With the electrical racking feature MR2 option, there are now
two methods of racking a MV circuit breaker or drawout auxiliary,
requiring a lockout-tagout (LOTO) method for both options. The first
is the standard positional interlock located at the front right of the
breaker pan assembly (see Figure 3) or front right of the auxiliary pan
assembly. This lock prohibits an operator from manually inserting a
crank into the Lev-in assembly and manually racking the breaker or
auxiliary device as specified in the switchgear instruction book. Once
a lock option is installed, the (MR2) will be disabled via the LOTO/
padlock permissive switch for the breaker pan assembly (see
Figure 4) and the auxiliary pan assembly (see Figure 5).
Figure 3. Positional interlock for circuit breaker pan assembly
(5-27 kV).
Refer to equipment instruction booklet for acceptable LOTO options.
Figure 4. LOTO/padlock switch for typical circuit breaker and arc
auxiliary circuit breaker pan assembly.
Figure 5. LOTO/Padlock Switch Arc Auxiliary Pan Assembly.
LOTO/Padlock
Switch

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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
Diagnostics/troubleshooting
The integrated racking controller programming has built-in
diagnostics and error detection. If an error occurs, “E1” to “E9” will
appear on the pendant display (see Figure 6). On the back of the
pendant there is a label that explains what the error is and what to
do if the error occurs (see Figure 9).
Figure 6. MR2 Error code display.
Figure 7. MR2 O/C error code display.
Figure 8. MR2 O/C error code display with out
connect/disconnect.
Figure 9. MR2 error code display.
Figure 10. MR2 O/C error code display.
E1: Motor overcurrent
Condition when motor current is in excess of allowed value. Multiple
causes could create this condition. E1 error codes may occur if
system is operated on temporary generator power. Operator should
shut off power to the VC-W MR2 controller by tripping the 15 A
circuit breaker (see Figure 11) in the LV compartment and manually
rack out the MV device. The operator should inspect the MV device,
levering system subassembly, and controller card for obvious
damage or abnormal conditions. If no obvious issues are found,
reinstall the MV device .
E2: Open motor circuit
Can occur when the motor thermal switch opens, possibly caused
by an excessive duty cycle (more than 10 consecutive operations in
quick succession without stopping). Once the thermal switch closes
(motor cools down), the controller can be reset by pressing the
disconnect switch.
An open motor circuit as shown (Figure 1 and 2) will also cause this
error. Use troubleshooting as shown with Figure 1 and 2.

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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
E3: Motor timed out
Condition when motor continues to run in excess of 45 seconds
during racking process. This error state condition can be caused
from a broken motor shaft, coupling, or a damaged gear box.
Operator should shut off power to the VC-W MR2 controller
by tripping the 15 A circuit breaker (see Figure 11) in the LV
compartment and manually rack out the MV device. Once the
MV device is removed from the compartment, the operator can
replace the damaged devices.
E4: MV device position “unknown”
Controller does not know the location of the MV device in the
breaker or auxiliary compartment. The operator must press the
“Disconnect” button on the pendant as the other buttons will not
function. Once the breaker has reached the disconnect position, the
“Disconnect” LED will illuminate and the operator can start the MV
device racking process over by pressing the “Connect” button.
E5: Open permissive
This state is due to a permissive contact being open. It could be a
standard permissive such as the circuit breaker being closed or the
slider bracket being pushed in. In this case, press the “Disconnect”
button to reset the controller. Once the permissive switch is closed,
any operation will work. Use troubleshooting guide as shown with
Figure 1 and 2.
E6: Communication error
This state results from damaged communication cable or wiring.
Check all areas of communication wiring (e.g., discrete, CAT5, TB
wiring, or Modbus controller wiring). If disconnect and connect
positional circuits are closed, the board enters programming mode
causing a communication error.
E7: No MV device
This state occurs when the Lev-in assembly racks in and the
“Connect” limit switch is depressed; however, no increase in
motor current is detected. See below table for normal operating
current values.
Device type Racking in/out current (amperes) Racking on/off current (amperes)
Breaker 2–3 10
5/15 kV Arc Auxiliary — —
5/15 kV Non-arc Auxiliary — —
E8: Firmware compatibility error
This state results from the pendant and controller card not having
compatible firmware. Contact your Eaton representative to have the
firmware updated.
E9: No test (MR2 open/close only)
This state occurs when the test button is pressed and the control
board does not have test activated. See Figure 2.There is not a test
position available for the MV device.
Controller diagnostic display
This feature can be used for diagnostic and troubleshooting
purposes. The operator will press and hold down the enable button
while pressing and holding down the unused button under the
“Intermediate” label on the pendant for 3 seconds. The Gear type,
controller firmware version, pendant firmware version, rack-in count,
rack-out count, overcurrent count and “test” or “No Test” verification
will scroll across the display.
Ex. of entire sequence:
PG
##
GR
##
CF
##
PF
##
RI
## ##
RO
## ##
OC
## ##
NT or T AD
##
1 2 3 4 5 6 7 8 9
1. Product Group
2. Gear type
3. Controller Firmware version
4. Pendant Firmware version
5. Rack-in count
6. Rack-out count
7. Overcurrent count
8. “No Test” or “Test”
9. MODBUS Address (01 to 99)
Each new version of the firmware will be an increased revision of
that firmware in our system. There will be no rev 2.1 then rev 2.2,
it will go from rev 2 to 3 to 4 and so on for any change made to the
firmware.
Setting gear type
mCAUTION
SETTING THE WRONG GEAR TYPE CAN CAUSE THE BREAKER TO NOT
FULLY RACK IN. GEAR TYPE IS CELL SPECIFIC, IF A CONTROL BOARD
IS MOVED TO A NEW CELL ONE MUST VERIFY GEAR TYPE USING
CONTROLLER DIAGNOSTIC DISPLAY.
Setting the gear type
All gear types are imbedded in one controller firmware version. The
gear type is set with defined inputs on power up. Gear Type may be
set by one of the two methods shown below. If Method 1 is used it
will override any Gear Type set using Method 2.
Gear types
01 5/15kV 1200, 38kV 25kA *
02 5/15kV 3000A
03 5kV narrow design
04 27kV
05 5/15kV 2000A, 38kV 40kA
06 Arc aux (ignores E7)
07 ¼ high aux (ignores E7)
15 Demo (ignores E7)
* 5/15 kV 2000A switchgear cells built prior to 2019 used Gear Type 01.
Method 1, applies to pendant with enable button.
The gear type is set by turning the Gear Type Dial to correct gear
type shown in the table in the previous section (Note: Gear Type 15
is position F on the dial). The gear type can then be verified with the
diagnostic display.
Unused button

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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
Method 2, applies to pendant without enable button.
On power up if both connect and disconnect positional limit
switches are closed then the controller will look to see what series
of I/O controls are closed. The gear type is then set depending on
what pushbuttons are closed. The gear type can then be verified
with the diagnostic display. Below are the sequences of closed
contacts to set each gear type.
Closed contacts upon power-up
Gear type
Positional limit switches
(ref Figure 15)I/O Controls jumper
01 “Disc” & “Conn” Pin 8 to pin 1
02 “Disc” & “Conn” Pin 8 to pin 2
03 “Disc” & “Conn” Pin 8 to pin 
04 “Disc” & “Conn” Pin 8 to pin 1 and 2
05 “Disc” & “Conn” Pin 8 to pin 2 and 3
06 “Disc” & “Conn” Pin 8 to pin 1, 2 and 3”
07 “Disc” & “Conn” None
15 “Disc” & “Conn” Pin 8 to pin 1 and 3
Procedure:
Step 1. - Using an Ethernet cable and a RJ485 to 8 pin terminal
block adapter. Connect one end of the Ethernet cable to the
discrete I/O control connection shown on Figure 12. Connect the
other end of the Ethernet cable to the RJ485 connection shown on
Figure 12.
Setting the Modbus address
If the enable button is present (Figure 7 and 8) the enable button
must be held to operate the pendant. The Modbus address of a
controller board is set using the pendant. The available MODBUS
addresses are 01 to 99 for one RS485 network.
To set the MODBUS address, follow the steps below:
1. Connect pendant to the cell to be programmed.
2. Hold down the “Intermediate” button and within 3 seconds
press and hold the “Connect” button until the 2-digit LED display
begins to flash “##”, at the same time the “Connect” LED will
begin to flash.
3. Now the “Test” and “Disconnect” buttons can be used to scroll
up and down (01 to 99) until the desired address number is
reached. While scrolling, the “Connect” LED will continue to
flash to let the user know that the address is not set.
4. Once the desired address number is reached, press the
“Connect” button to connect to the Modbus address displayed.
5. Press “Disconnect” to return to operation mode.
6. At this time the address can be verified using the controller
diagnostic display described above.
The MODBUS address can be modified after being set using the
same sequence.
ote:N See Instruction Booklet IB022022EN for information on the MODBUS
interface to VCPW-MR2 and VCPW-HD controllers.
Manual racking
Follow the steps listed below to manually rack the MV device in the
case of a motor/controller failure or loss of control power.
1. Turn “Off” the 15 A two-pole LV circuit breaker mounted in the
LV compartment (see Figure 11).
a. This action does two things:
1. It ensures that the motor will not turn on during
manual racking.
2. It prevents the motor from back feeding voltage
and causing the user to apply excessive torque to
the lead screw.
2. Once the LV circuit breaker is turned “Off,” the operator can
insert the standard racking tool (for 5/15 kV 1/4 high auxiliary
drawers, use a standard 1/2” socket) and rack the MV device to
the connected or disconnected position.
a. This will require slightly more torque than normal because it
will be driving through the motor gearbox.
In the case that the motor is jammed and the lead screw does not
turn freely or with less than 35 ft-lbs (47.45 Nm) of torque, the
operator can apply approximately 70 ft-lbs (94.91 Nm) of torque
and the lead screw will break away from the motor. Once the lead
screw has broken free from the motor, the MV device can be racked
manually. The unit should then be inspected and a new lead screw
installed.
Figure 11. 15 A circuit breaker.
Terminals 1 and 2 are the 120 VAC power supply.
Terminals 3 and 4 are the 140 VDC motor circuit.

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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
Control options
Figure 12. MR2 controller.
Gear Type Selector
Test / No Test
Pendant Control
Positional Limit
Switch Connection
I/O Control Connection
Safety Permissive
Connections
120 VAC input from
control power
120 VDC output to
MR2 motor
Figure 13. MR2 O/C controller.
There are three modes of operations available to communicate with
the integrated racking controller:
1. Handheld pendant (see Figure 6 and 9);
2. Discrete I/O;
3. Modbus communication.
Option 1
The handheld pendant can operate the integral racking device from a
distance of up to 30 ft. (9.14 m) from the equipment with a
Cat 5 cable (typically there will be an RJ-45 jack located on the front
panel of the switchgear - see Figure 14). The MV device can be
racked to the connect, test(BPI pan only), or disconnect positions
by pressing the desired button on the pendant. MV device 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.
mCAUTION
THERE ARE NO SERVICEABLE PARTS INSIDE THE CASE OF THE PENDANT.
ATTEMPTING A MODIFICATION OR REPAIR OTHER THAN THOSE
EXPLAINED IN THIS SECTION COULD EXPOSE PERSONNEL TO SHOCK
HAZARD FROM INTERNAL CAPACITORS. OPENING THE CASE OF THE
PENDANT TO ATTEMPT A REPAIR WILL VOID THE WARRANTY.
Obsolete not used

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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 Figure 14) 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.

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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
Figure 16. MR2 – arc auxiliary 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” limit switch: activated when the auxiliary drawer is
in the disconnected position.
4. “Connect” limit switch: activated when the auxiliary drawer is in
the connected position.
5. Limit switch actuator.
6. Lev-in lead screw.
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).
If the enable button is present (Figure 7 and Figure 8) the enable
button must be held to operate the pendant.
For breaker pan assemblies WITHOUT test position
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.
2. The operator should then manually pull the secondary plug to
apply control power to breaker.
a. At this time the breaker open and close operations can be
tested electrically.
b. To proceed further and rack the breaker to the connected
position, the breaker must be open.
1. Arc gear – the compartment door must be closed
and latched.
2. Non-arc gear – it is recommended to close the door but
not mandatory if door safety switch is not included.
3. Press the connect button.
4. The green disconnect LED will turn off and the intermediate
LED will flash as the breaker is in motion.
5. 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.
6. To rack the breaker out, the breaker must be open.
a. If the breaker is not open and the operator tries to press
the disconnect button, the operator will receive an open
permissive error “E5”.
b. The operator should then open the breaker.
c. After the breaker is open, the error can be cleared by
pressing the disconnect button.
7. Once the error is cleared, the disconnect button can be pressed.
a. It is not necessary to hold the button down.
8. The red connect LED will turn off and the intermediate LED will
flash as the breaker is in motion.
9. Once the breaker reaches the disconnect position, the solid
green disconnect LED will illuminate.
10. At this time the secondary plugs will be disconnected and there
will not be any power on the breaker.

14
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
For breaker pan assemblies WITH test position
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.
1. Arc gear – the compartment door must be closed
and latched.
2. Non-arc gear – it is recommended to close the door but
not mandatory if door safety switch is not included.
2. Press the test button.
a. It is not necessary to hold the button down.
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.
1. Arc gear – the compartment door must be closed
and latched.
2. Non-arc gear – it is recommended to close the door but
not mandatory if door safety switch is not included.
4. Press the connect button.
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.
a. If the breaker is not open and the operator tries to press
the disconnect button, the operator will receive an open
permissive error “E5”.
b. The operator should then open the breaker.
c. After the breaker is open, the error can be cleared by
pressing the disconnect button.
8. Once the error is cleared, the operator can rack the breaker to
the test or disconnect position.
a. It is not necessary to hold the button down.
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.
For Auxiliary pan assemblies
1. Insert the auxiliary device into the auxiliary cell.
a. The auxiliary device is now in the disconnect position.
b. The solid green disconnect LED will be illuminated.
2. To proceed further and rack the auxiliary to the
connected position.
a. Arc gear – the compartment door must be closed and
latched.
b. Non-arc gear – it is recommended to close the door but not
mandatory unless the door safety switch is included.
3. Press and the connect button.
4. The green disconnect LED will turn off and the intermediate LED
will flash as the auxiliary device is in motion.
5. Once the auxiliary device reaches the connect position, the solid
red connect LED will illuminate.
a. The auxiliary device is now in the connect position.
6. Press the disconnect button.
a. It is not necessary to hold the button down.
b. If the “Test” button is pressed an “E9” error will be displayed
(auxiliaries do not have a test position). Press the disconnect
button to clear the error.
7. The red connect LED will turn off and the intermediate LED will
flash as the auxiliary is in motion.
8. Once the auxiliary reaches the disconnect position, the solid
green disconnect LED will illuminate.

15
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
Notes:

16
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

17
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

Eaton
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Cleveland, OH 44122
United States
Eaton.com
© 2019 Eaton
All Rights Reserved
Printed in USA
Publication No. IB022010EN / TBG001320
July 2019
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Instructions for installation, operation,
and maintenance of medium voltage
VC-W MR2 (integral racking)
Instructional Booklet IB022010EN
Effective Jully 2019
Revision #4