KITO HARRINGTON MR2Q Series User manual

EFFECTIVE: May 31, 2018

MOTORIZED
TROLLEY
MR2Q SERIES
1/8-1Ton Capacity
Code, Lot and Serial Number

This equipment should not be installed, operated or maintained
by any person who has not read and understood all the
contents of this manual. Failure to read and comply with the
contents of this manual can result in serious bodily injury or
death, and/or property damage.

2
Table of Contents
Section Page Number
1.0 Important Information and Warnings……………………………………………………………………….4
1.1 Terms and Summary
1.2 Warning Tag and Labels
2.0 Technical Information ………………………………………………………………………………………. 8
2.1 Specifications
2.2 Dimensions
3.0 Pre-operational Procedures..……………………………………………………………………………... 10
3.1 Assembly and Adjustment
3.2 Mounting Location
3.3 Installation of Trolley onto Beam
3.4 Electrical Connections
3.5 VFD Setup
3.6 Pre-operational Checks and Trial Operation
4.0 Operation…………………………………………………………………………………………………… 27
4.1 Introduction
4.2 Shall’s and Shall Not’s for Operation
4.3 Trolley and Hoist Controls
5.0 Inspection……………………………………………………………………………………………………31
5.1 General
5.2 Inspection Classification
5.3 Frequent Inspection
5.4 Periodic Inspection
5.5 Occasionally Used Trolleys
5.6 Inspection Records
5.7 Inspection Methods and Criteria

3
Section Page Number
6.0 Maintenance & Handling…………………………………………………………………………………...37
6.1 Count/Hour Meter (Dual Speed Only)
6.2 Lubrication
6.3 Brake
6.4 Storage
6.5 Outdoor Installation
6.6 Operational Environment
7.0 Troubleshooting……………………………………………………………………………………………. 40
8.0 Warranty……………………………………………………………………………………………………. 42
9.0 Parts List…………………………………………………………………………………………………….43

4
1.0 Important Information and Warnings
1.1 Terms and Summary
This manual provides important information for personnel involved with the installation, operation and maintenance
of this product. Although you may be familiar with this or similar equipment, it is strongly recommended that you read
this manual before installing, operating or maintaining the product.
Danger, Warning, Caution and Notice - Throughout this manual there are steps and procedures that can present
hazardous situations. The following signal words are used to identify the degree or level of hazard seriousness.

Danger indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury, and property damage.

Warning indicates an imminentlyhazardous situation which, if not avoided, could result in death or
serious injury, and property damage.

Caution indicates a potentiallyhazardous situation which, if notavoided, may result minor or
moderate injury or property damage.

Notice is used to notify people of installation, operation, or maintenance information which is
important but not directly hazard-related.

These general instructions deal with the normal installation, operation, and maintenance situations encountered with
the equipment described herein. The instructions should not be interpreted to anticipate every possible contingency
or to anticipate the final system, crane, or configuration that uses this equipment. For systems using the equipment
covered by this manual, the supplier and owner of the system are responsible for the system’s compliance with all
applicable industry standards, and with all applicable federal, state and local regulations/codes.
This manual includes instructions and parts information for a variety of trolley and hoist types. Therefore, all
instructions and parts information may not apply to any one type or size of specific trolley or hoist. Disregard those
portions of the instructions that do not apply.
Record your trolley’s Code, Lot and Serial Number on the front cover of this manual for identification and future
reference to avoid referring to the wrong manual for information or instructions on installation, operation, inspection,
maintenance, or parts.
Use only Harrington authorized replacement parts in the service and maintenance of this trolley.

5

Equipment described herein is not designed for and MUST NOT be used for lifting, supporting, or transporting people,
or for liftingor supporting loads over people.
Equipment described herein should not be used in conjunction with other equipment unless necessary and/or
required safety devices applicable to the system, crane, or application are installed by the system designer, system
manufacturer, crane manufacturer, installer, or user.
Modifications to upgrade, rerate, or otherwise alter this equipment shallbe authorized only by the original equipment
manufacturer.
Equipment described herein maybe used in the design and manufacture of cranes or monorails. Additional
equipment or devices may be required for the crane and monorail to complywith applicable crane design and safety
standards. The crane designer, crane manufacturer, or user is responsible to furnish these additional items for
compliance. Refer to ANSI/ASME B30.17, “Safety Standard for Top-Running Single Girder Cranes”; ANSI/ASME
B30.2 “Safety Standard for Top-Running Double-Girder Cranes”; and ANSI/ASME B30.11 “Safety Standard for
Underhung Cranes and Monorails”.
If a below-the-hook lifting device or sling is used with a hoist, refer to ANSI/ASME B30.9, “Safety Standard for Slings”
or ANSI/ASME B30.20, “Safety Standard for Below-the-Hook Lifting Devices”.
Hoists, trolleys and cranes, used to handle hot molten material mayrequire additional equipment or devices. Refer to
ANSI Z241.2, “Safety Requirements for Melting and Pouring of Metals in the Metal Casting Industry”.
Electrical equipment described herein is designed and built in compliance with Harrington's interpretation of
ANSI/NFPA 70, “National Electrical Code”. The system designer, system manufacturer, crane designer, crane
manufacturer, installer, or user is responsible to assure that the installation and associated wiring of these electrical
components is in compliance with ANSI/NFPA 70, and all applicable Federal, State and Local Codes.
Failure to read and comply with anyone of the limitations noted herein can result in serious bodily injury or death,
and/or propertydamage.

6

HAZARDOUS VOLTAGES ARE PRESENT IN THE CONTROL BOX, OTHER ELECTRICAL COMPONENTS,
AND CONNECTIONS BETWEEN THESE COMPONENTS.
Before performing ANY mechanical or electrical maintenance on the equipment, de-energize (disconnect) the main
switch supplying power to the equipment; and lock and tag the main switch in the de-energized position. Refer to
ANSI Z244.1, “Personnel Protection – Lockout/Tagout of EnergySources”.
Only trained and competent personnel should inspect and repair this equipment.

It is the responsibility of the owner/user to install, inspect, test, maintain, and operate a trolley or hoist in accordance
with ANSI/ASME B30.16, “Safety Standard for Overhead Hoists”, OSHA Regulations and ANSI/NFPA 70, "National
Electric Code". If the trolley is installed as part of a total lifting system, such as an overhead crane or monorail, it is
also the responsibilityof the owner/user to comply with the applicable ANSI/ASME B30 volume that addresses that
type of equipment.
It is the responsibility of the owner/user to have all personnel that will install, inspect, test, maintain, and operate a
hoist read the contents of this manual and applicable portions of ANSI/ASME B30.16, “Safety Standard for Overhead
Hoists”, OSHA Regulations and ANSI/NFPA 70, “National Electric Code”. If the trolley is installed as part of a total
lifting system, such as an overhead crane, the applicable ANSI/ASME B30 volume that addresses that type of
equipment must also be read by all personnel.
If the trolley owner/user requires additional information, or if any information in the manual is not clear, contact
Harrington or the distributor of the trolley. Do not install, inspect, test, maintain, or operate this trolley unless this
information is fully understood.
A regular schedule of inspection of the trolley in accordance with the requirements of ANSI/ASME B30.16 should be
established and records maintained.

7
1.2 Warning Tag and Labels
The warning tag illustrated below in Figure 1-1 is supplied with each trolleyshipped from the factory. If the tag is not
attached to the pendant cord for your hoist/trolley, order a tag from your dealer and install it. Read and obey all warnings
attached to this trolley. Tag is not shown actual size.
front back
Figure 1-1 Warning Tag Attached to Trolley Controls

8
2.0 Technical Information
2.1 Specifications
Note: This Owner’s Manual is to be used with the EQ hoist’s Owner’s Manual .
2.1.1 Product Code for MRQ Trolley Alone:
2.1.2 Product Code for MRQ Trolley with EQ Series Electric Hoist:
Table 2-1 Trolley Specifications
Capacity
(Ton)
Product
Code
Standard
Beam Flange
Range
(in)
Optional Beam
Flange Range
(in)
Min.
Allowable
Radius for
Curve*
(in)
Motor**
Approx.
Net
Weight
(lbs)
Output
(Hp)
Current Draw
(amps)
@208V -
230V
@380-
440V
@415-
460V
1
MR2Q010SD
2.28 to 6.02
6.03 to 12.00
31.5
0.54
3.4
2.5
1.7
75
* Flange widths smaller than 4inches will have a minimum radius of 137.8 inches
** Althoughdifferent voltage ranges are shown together, these dual speedmotors are NOT reconnectable.

9
2.1.3 Operating Conditions and Environment
Temperature Range:
-4° to +104°F (-20° to +40°C)
Humidity:
85% or less (no condensation)
Noise Level:
85 dB or less (A scale: measured 1 meter awayfrom the electric chain hoist)
Enclosure Rating:
Trolley Meets IP55, Pendant Meets IP65
Supply Voltage:
208-230, 380-440V, 415-460V-3-50/60
Intermittent Duty Rating:
27/13% ED with 78/162 starts per hour
Trolley Duty Rating:
ISO M6/5; ASME H4
2.2 Dimensions
Table 2-2 TrolleyDimensions
For EQM001
to EQM010
Capacity
b’
b
d
e
e'
i
j
k
m
n
r
t
1/8-1/2t
15.6
12.4
8.7
20.3
7.1
3.7
1.1
5.1
8.1
4.3
2.0
1.2
1t
1.2

10
3.0 Pre-operational Procedures
3.1 Assembly and Adjustment
3.1.1 When the MR2Q trolley is combined with a hoist, follow and complete all pre-operational procedures
provided with the hoist. For Harrington EQ model hoists, follow the pre-operational procedures in the
EQ Owner's Manual in conjunction with all information provided in this section for mounting and
electrical connections.
3.1.2 In addition to the information and procedures provided in this section for the MR2Q trolley, there are
specific details for using EQ hoistswith MR2Q trolleys. Specialmounting and wiring considerations
must be taken if the trolley is used with a hoist other than an EQ model.
3.1.3

Never attempt to hook mount a hoist directly to the Suspension Shaft on trolleys.
These trolleys are designed to be used with a suspender only and do not have the vertical clearance
required for a hook to fit between the Suspension Shaft and trolley beam.
3.1.4 Preparing EQ hoists for use with MR2Q trolley.
The standard suspension configuration, with a motorized trolley, uses the Suspension Bar which
orients the hoist perpendicular to the trolley beam. If the hoist is not equipped with the Suspension Bar,
remove the Top Hook Assemblyfrom the hoist and install the Suspension Bar as follows in step 1
through 4.Optional hook mount to Suspender H orients the hoist parallel to the trolley beam (see
Figure 3-2).
1) Refer to Figure 3-1.
2) Remove the Screws. Remove Top Pins.
3) Remove the Top Hook Assemblyand replace it with the Suspension Bar.
4) Reinstall the Top Pins and Screws
Figure 3-1 Installing Suspension Bar on EQ Hoists
Figure 3-2 Optional Suspender Hfor parallel mount

11
3.1.5 Trolley Assembly
1) Refer to Figure 3-3.
2) Remove the Shaft Stopper Pin, Side Plate S, and Spacers from the Suspension Shaft. For beam flanges
that are wider than the standard range, different suspension shaft and/or spacer arrangements are
provided. Refer to Table 3-1.
3) Insert the Suspension Shaft to Side Plate G and attach it with the Suspension Shaft Bolt, Slotted Nut and
Split Pin (cotter pin). Refer to Figure 3-4 and ensure that correct Suspension Shaft holes are used.
Securely bend both branches of the Split Pin after insertion.
4) Referring to Figure 3-6, Table 3-1 and Table 3-2 install the inner adjusting Spacers and Suspension Bar
on the Suspension Shaft. Use all of the Spacers provided with the trolley. If the beam width is not listed in
Table 3-2, use the next size smaller and make adjustments in accordance with Section 3.1.6.
5) Place Side Plate S into the Suspension Shaft.
6) Install the outer adjusting Spacers on the Suspension Shaft outside of Side Plate S. Insert the Shaft
Stopper Pin into Hole "A" so that Split Pin is to the left when seen from the front side of trolley switch box.
Temporarily install the split pin in the Shaft Stopper Pin and bend the split pin slightlyto hold it in place.
The split pin should be fully bent after checking and attaining the proper beam flange adjustment.
7)

Hole B on the suspension shaft is the hole for mounting work (temporaryassembly).
Do not use the hole for the adjustment of railwidth. Failure to comply with this instruction mayresult in
death or serious injury.
Figure 3-3 Assembling the Trolley

12
Figure 3-4 Suspension Shafts
3.1.6 Adjusting the trolley width - After assembling trolley per Section 3.1.5, check the adjustment as follows:
1) Refer to Figure 3-5 or 3-6.
2) Make sure both side plates are spread fully outward and Measure Dimension "A". Dimension "A"
must be 1/8 to 3/16" greater than "B".
3) If "A"does not fall within the specified range,move spacersfrom inner to outer or from outer to
inner as necessary to obtain the proper "A" dimension, irrespective of thenumbers in Table 3-2.
4) After obtaining the proper adjustment, install the Shaft Stopper Pin in Hole A, insert the Split Pin
into the Shaft Stopper Pin, and securely bend both branches of the split pin.
B
A
Shaft Stopper Pin
Suspender
Outer Adjusting Spacers
Inner Adjusting Spacers
Side Plate S
Side Roller
Flange
Figure 3-5 Adjusting the Trolley

13
Note: Inner Spacer rows on Table 3-2 list two numbers. First numberis the quantityof spacers located on the
left side of the Suspension Bar or Suspender H , second numberis the quantity on the right side.
Example: 1 + 2 Adjusting Spacers on the right side (Side Plate S side)
Adjusting Spacers on theleft side (Side Plate Gside)
Figure 3-6 Spacer Arrangement
Table 3-1 Suspension Shaft Adjusting Spacers, and Suspension Shaft Bolt
Capacity
(Tons)
Flange Range
(in)
Total Number of Spacers Supplied
Suspension Shaft
Bolt Location
Thin
Thick
Fixing
Thin L
Thick L
1/8to 1/2
2.28 to 6.02
8
5

2
2
Hole 1 (See Fig. 3-4)
6.03 to 12.00
8
9
2
2
2
Hole 1 (See Fig. 3-4)
1
2.28 to 6.02
14
5

2
0
Hole 1 (See Fig. 3-4)
6.03 to 12.00
14
9
2
2
0
Hole 1 (See Fig. 3-4)

Table 3-2 Number of Adjusting Spacers
Beam
Flange
Width
(in)
16
5
2
2
1
2
8
7
2
3
4
1
3
16
9
3
8
7
3
16
15
3
4
16
3
4
16
5
4
16
7
4
16
11
4
16
15
4
5
16
3
5
16
5
5
8
3
5
8
5
5
8
7
5
6
8
1
6
16
5
6
16
7
6
16
11
6
8
7
6
7
8
5
2
16
15
2
4
3
4
16
15
5
Cap.
(Ton)
Spacer
Type
(mm)
58
64
73
75
82
90
98
100
102
106
110
113
119
125
127
131
135
137
143
149
153
155
160
163
170
175
178
66
74
76
91
120
150
1/8,
1/4,
and
1/2
Thin
Inner
1+2
2+3
4+4
1+0
1+2
2+3
0+0
1+0
1+0
1+2
2+2
2+3
3+4
4+4
4+1
5+1
2+2
2+2
3+3
4+4
4+1
1+1
2+2
2+3
3+0
4+4
4+1
Outer
5
3
0
7
5
3
8
7
7
5
4
3
1
0
3
2
4
4
2
0
3
6
4
3
5
0
3
Thick
Inner
0+0
0+0
0+0
0+0
0+0
0+0
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+2
1+2
2+2
2+2
2+2
2+2
2+3
3+3
3+3
3+3
3+4
3+3
3+4
Outer
5
5
5
5
5
5
3
3
3
3
3
3
3
3
2
2
1
1
1
1
0
3
3
3
2
3
2
Fixing
Inner





















0
0
0
0
0
0
Outer





















2
2
2
2
2
2
Thick
L
Inner
0+0
0+0
0+0
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
Outer
2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Thin L
Inner
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1
Thin
Inner
0+1
1+2
3+3
4+3
5+4
6+5
3+3
4+3
4+3
5+4
5+5
6+5
7+6
7+7
7+4
8+4
5+5
5+5
6+6
7+7
7+4
4+4
5+5
6+5
6+3
7+7
7+4
Outer
13
11
8
7
5
3
8
7
7
5
4
3
1
0
3
2
4
4
2
0
3
6
4
3
5
0
3
Thick
Inner
0+0
0+0
0+0
0+0
0+0
0+0
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+2
1+2
2+2
2+2
2+2
2+2
2+3
3+3
3+3
3+3
3+4
3+3
3+4
Outer
5
5
5
5
5
5
3
3
3
3
3
3
3
3
2
2
1
1
1
1
0
3
3
3
2
3
2
Fixing
Inner





















0+0
0+0
0+0
0+0
0+0
0+0
Outer





















2
2
2
2
2
2
Thin
L
Inner
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
Outer
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14

Table 3-2 Number of Adjusting Spacers (continued)
Beam
Flange
Width
(in)
16
1
7
4
1
7
8
7
7
8
16
7
8
16
11
8
9
8
1
9
8
7
9
10
8
1
10
4
1
10
8
3
10
2
1
10
11
8
1
11
4
1
11
8
3
11
8
5
11
4
3
11
16
13
11
8
7
11
12
8
1
7
16
5
7
Cap.
(Ton)
Spacer
Type
(mm)
180
184
200
203
215
220
229
232
250
254
257
260
264
267
279
283
286
289
295
298
300
302
305
181
185
1/8,
1/4,
and
1/2
Thin
Inner
1+1
1+2
4+4
5+0
2+3
3+4
1+1
1+2
4+0
1+1
1+2
2+2
2+3
3+3
1+1
1+2
2+2
2+3
3+0
4+0
4+1
4+1
4+2
Outer
6
5
0
3
3
1
6
5
4
6
5
4
3
2
6
5
4
3
5
4
3
3
2
Thick
Inner
0+0
0+0
0+0
0+1
1+1
1+1
2+2
2+2
2+3
3+3
3+3
3+3
3+3
3+3
4+4
4+4
4+4
4+4
4+5
4+5
4+5
4+5
4+5
Outer
9
9
9
8
7
7
5
5
4
3
3
3
3
3
1
1
1
1
0
0
0
0
0
Fixing
Inner
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
Outer
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Thick
L
Inner
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
Outer
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Thin L
Inner
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1
Thin
Inner
4+4
5+4
7+7
7+4
6+5
7+6
4+4
5+4
7+3
4+4
5+4
5+5
6+5
6+6
4+4
5+4
5+5
6+5
6+3
7+3
7+4
7+4
7+5
Outer
6
5
0
3
3
1
6
5
4
6
5
4
3
2
6
5
4
3
5
4
3
3
2
Thick
Inner
0+0
0+0
0+0
0+1
1+1
1+1
2+2
2+2
2+3
3+3
3+3
3+3
3+3
3+3
4+4
4+4
4+4
4+4
4+5
4+5
4+5
4+5
4+5
Outer
9
9
9
8
7
7
5
5
4
3
3
3
3
3
1
1
1
1
0
0
0
0
0
Fixing
Inner
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
Outer
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Thin
L
Inner
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
1+1
Outer
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15

16
3.1.7 Counter Weight –For proper balance the 1 Ton, MR2Q trolleys (codeMR2Q010SD) require aCounter
Weight when installed on a 3 7/8 inch or smaller beam flange. The Counter Weight mounts on the
Suspension Shaft as shown in Figure 3-7 and is held in place with a Bolt, Slotted Nut and Split Pin.
The bolt is installed through holes B and C. Make sure the weight is securely fastened to the shaft and
that the split pin is properly bent. All other trolley capacities do NOT require a counter weight.
Figure 3-7 Counter Weight installation for 1 Ton dual speed trolleys on
beam flanges 3 7/8 inch or smaller
3.2 Mounting Location
3.2.1

Prior to mounting the trolley (and hoist) ensure that the trolley beam and its
supporting structure are adequate to support the trolley, hoist and its loads. If necessary consult a
professional that is qualified to evaluate the adequacy of the suspension location and its supporting
structure.
3.2.2

See Section 6.5 for outdoor installation considerations.
3.3 Installation of Trolley onto Beam
3.3.1 Assemble and adjust the trolley before attempting to install the trolley on the beam.
3.3.2 Preferred Method –Sliding the trolleyconnected with an electric chain hoist onto the traversing beam
from the beam end is the most convenient and recommended method. If the trolleycan be mounted
from the end of the beam then: Remove the trolley end-stop from the beam and set the trolleyon the
beam from the end. Securely re-install the trolley end stop on the beam.
3.3.3 Optional Method–If the trolley cannot be mounted from the end of the beam, complete the installation
as follows:
1) Move the Shaft Stopper Pin toHole B(see Figure 3-8).
2) Spread the trolley side plates apart.
3) Lift the trolley onto the beam so that the geared wheels (motor side of trolley) rest on the beam's
flange.
4) Hold Side Plate G securely so that it does not comeoff the beam then push the side plates
together so that all four wheels rest on the beam's flange.
5) Remove the Shaft Stopper Pin from Hole B and re-install in Hole A (see Figure 3-4). Bend the Split
Pin securely. Never use trolley with Shaft Stopper Pin in Hole B. Hole B is ONLY used when
installing the trolleyon the beam.

17
Figure 3-8 Optional trolley installation method
3.4 Electrical Connections
3.4.1

Ensure that the voltage of the electric power supply is proper for the hoist or trolley.
3.4.2

Do NOT apply electronic soft-start control or voltage varying controls to the MR2Q
trolley. Use of such devices may cause the motor brake and other electrical components to
malfunction.
3.4.3

Before proceeding, ensure that the electrical supply for the hoist or trolleyhas
been de-energized (disconnected). Lock out and tag out in accordance with ANSI Z244.1 “Personnel
Protection -Lockout/Tagout of Energy Sources”.
3.4.4

To avoid a shock hazard, DO NOT perform ANY mechanical or electrical
maintenance on the dual speed (or VFD control) trolleyor hoist within 5 minutes of de-energizing
(disconnecting) the trolley or hoist. This time allows the internal VFD capacitor to safelydischarge.
3.4.5

Do Not remove power to the dual speed (or VFD control) hoist or trolley during
operation.
3.4.6

All MR2Q trolleys are equiped with a VFD. The VFD is used to control the high
andlowtraversing speeds andaccelereations. These speeds and accelerations come presetfrom the
factory, 80/13 feet per minute. Speed (frequency) parameters can be customized. Refer to Section
3.5.10 for trolley specific speed ranges and instructions and Section 3.5.11 for trolley specific
acceleration/deceleration ranges and instructions.
3.4.7 The following instructions apply to installations where an EQ model electric hoist is installed on an
MR2Q trolley. In this case the hoist and trolley are controlled by a pendant with four push buttons –two
for the hoist motion and two for the trolley motion. Special wiring considerations must be taken if the
trolleyis used with a hoist other than an EQ model.
Pendant Cord - The Pendant Cord directlyconnects to the trolley’s Connection Box using a Cable
Holder Assembly. Make this connection as follows:
1) Refer to Figure 3-9.
2) With 1 inch of the outer cable insulation extending beyond the cable packing, insert the cable into
the Connection Box and screw together Cable Holder A and B.

18
3) Install the Strain Relief Cable to the Cord Support on the Bar Holder.
4) Inside the trolley’s Connection Box, insert the 6 pin and 3 pin pendant connectors (white) into the
CN13 connector and X21 connectors, respectively. Refer to the wiring diagram inside the control
cover and connect wires correctly.
Power Supply Cable Hoist Connection –The Power Supply Cable connects directly to the trolley's
Connection Box using Cable Holder Assembly. Make this connection as follows:
1) Refer to Figure 3-9 .
2) With 1 inch of the outer cable insulation extending beyond the cable packing, insert the cable into
the Connection Box and screw together Cable Holder A and B.
3) Refer to Figure 3-10 and connect the red, white and black wires to terminals 1, 2, and 3 on the
terminal strip inside the Connection Box. Connect the ground wire (green with yellow stripe or solid
green) to the ground terminal next to the terminal strip.
4) Install the Cable Support Assembly (pre-installed on the Power Supply Cable) onto the Cable
Support Arm Assemblyas shown in Figure 3-11.
5) Use care to avoid twisting or kinking the Power SupplyCable.
Trolley to Hoist Connections –The trolley connects to the hoist via short cables that are factory
installed into the trolleyConnection Box. . Make these connections as follows:
1) Refer to Figure 3-9 .
2) With 1 inch of the outer cable insulation extending beyond the cable packing, insert each cable into
the hoist and screw together Cable Holder A and B
3) Refer to the wiring diagram inside the trolley Connection Box Cover. Connect the white 6 pin
connector from the Relay Cable for Operation to CN13 inside the hoist. Connect the wires from
the Relay Cable for Power to the VFD according to wiring diagram.
Power Supply Cable Festooning –The MR2Q trolley is supplied with Cable Hangers for the Power
Supply Cable. Make this connection as follows:
1) Refer to Figure 3-11.
2) Install the Cable Hangers onto the Power SupplyCable spacing them every 5 feet.
3) Install a GuideWire system parallel to the beam. Pass the GuideWire through the Cable Hangers
andWire Guide.
4) Make sure the Guide Wire is properly tensioned and the Power Supply Cable is not twisted or
kinked.
3.4.8 Connection to Electrical Power Source - The red, white and black wires of the Power Supply Cable
should be connected to an Electric Power Disconnect Switch or Circuit Breaker.
3.4.9 Fuse/Breaker Capacity -The power supply for the trolley and hoist should be equipped with current
overload protection such as fuses, which should be selected for 110% to 120% of total listed full load
amperage, and should be dual element time-delayfuses. Refer to the motor nameplates on the trolley
and hoist for the full load amperage draw of each and added the two values together for the total
amperage.
3.4.10

Grounding - An improper or insufficient ground connection creates an electrical
shock hazard when touching any part of the hoist or trolley. In the Power Supply Cable the ground wire
will be either Green with Yellow stripe or solid Green. It should always be connected to a suitable
ground connection. Do not paint the trolley wheel running surfaces of the beam as this can affect
grounding.

19
Figure 3-9 Pendant and Power Supply Cable Connection –Product Code EQM001SD-SD to EQM010SD-SD
Dual Speed Trolley
Figure 3-10 Power supply cable terminal connections.

20
Figure 3-11 Power Supply Cable installation and Guide Wire location.