Milton Roy MAXROY Series Use and maintenance manual

ACC
Actuator Capacity
Control Manual
m-ROY®, MAXROY®, MILROYAL®,
PRIMEROYAL® and PRIMEROY®
Product Family Pumps
Manual No: 1602101001
Rev.: 02
Rev. Date: 04/2019
SUG_18005–Ind. -.01
Art: 5100465

TABLE OF CONTENTS
1 SAFETY INFORMATION -------------------------------------- 4
2 MARKING --------------------------------------------------------- 5
2.1 Agency approvals
3 TECHNICAL DEFINITION. --------------------------------------- 8
3.1 Technical specifications.
3.2 Product model coding.
4 START-UP. ----------------------------------------------------- 12
4.1 Recommendation.
4.2 Electrical Wiring.
5 OPERATION. -------------------------------------------------- 14
6 MAINTENANCE. ---------------------------------------------- 14
6.1 Installation area.
6.2 Electrical and temperature parameters.
6.3 Special operation conditions including incorrect practices.
6.4 Spare parts.
6.5 Returning units to the factory.
6.6 Trouble shooting.
7 STORAGE. ----------------------------------------------------- 19
7.1 Packaging & Storage.
7.2 What to check after storage?
7.3 What to check on pre-installed actuators?
8 MECHANICAL SET-UP. ----------------------------------------- 20
8.1 Adapting the actuator to your pump input.
9 ELECTRICAL CONNECTION AND TESTS. -------------- 21
10 ACTUATOR SETTINGS. ------------------------------------- 22
10.1 Setting up positioner board in direct setting mode.
11 How to change the acting mode and the fallback position?26

11.1 How to adjust the actuator versus flow curve?
12 MECHANICAL STOPS SETTINGS (ACC-3/4T ONLY) --------- 27
12.1 Cams settings.
12.2 How to adjust a single cam?
12.3 Travel limit cams and signaling cams
12.4 How to test factory settings (with positioner)?
13 TORQUE LIMITING DEVICE ------------------------------------ 30
14 MANUAL OVERRIDE -------------------------------------------- 31

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1 SAFETY INFORMATION
READ THESE INSTRUCTIONS CAREFULLY BEFORE USE
The following documents should also be consulted:
a) IEC/EN60079-14 standard (electric installations in gaseous
explosive atmosphere),
b) IEC/EN60079-17 standard (inspection and maintenance
operations in dangerous areas),
c) National Electrical Code (NEC500) for the USA and Canadian
Electrical Code (CEC500)
d) Decrees, ministerial orders, laws, directives, standards,
procedures and any other document relative to the area where
the actuator has to be installed.
Milton Roy, LLC cannot be judged responsible for the non-respect of
these rules.
Our equipment complies with the CSA and FM Standard and are
therefore CSA marked with indicators ‘’C” and ‘’US”.
Our equipment complies with IECEx and ATEX Standard and are
therefore IECEx and ATEX marked.
They have been designed to be used in explosive atmospheres:
 class I, group C, D in presence of vapor, fog or gas
 class II, group E, F, G and class III for dust
 group II - category 2 in presence of vapor, fog or gas (G).
Use in zone 1 or 2 for gas
Please check the compatibility between the indications written on the
identification plate and the explosive atmosphere type, the ambient
and the admissible surface temperature of the installation area.
The actuator installation and maintenance must be carried out by
qualified, trained and certified personnel.
Please carefully read this whole document before mounting and
starting-up the actuator.

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2 MARKING
2.1 Marking summary
ATEX
Explosionproof
enclosure “d”
IECEx
Explosionproof
enclosure “d”
CSA C&US
Explosionproof
enclosure “
C
1, D1
”
Name and
address of
manufacturer
Milton Roy, LLC
201 Ivyland Road, Ivyland, PA 18974, USA
Actuator
type ACC
Serial
number
Serial n°XXXXXXXX.YYY
Certifica
t
e
number INERIS
19ATEX0019X
IECEx INE
19.0016X TBC
Specific
marking
WARNING
–
DO
NOT OPEN
WHEN AN
EXPLOSIVE
ATMOSPHERE IS
PRESENT
WARNING - TO PREVENT IGNITION OF
FLAMMABLE GASES, VAPORS OR DUST,
DO NOT REMOVE COVER WHILE CIRCUITS
ARE LIVE
CABLE ENTRIES: SEE INSTRUCTIONS
N° of notified
audit body
CE 0891
Gas marking
II 2 G
E
x db IIB T6 Gb
Ex db IIB T6 Gb
Class I,
Division 1
Group C D T6
Dust marking
Not available on ACC
Class II
,
Division 1
Group E, F, G
Ambient
temperature
-
20°C +60°C
Or
-40°C +60°C
-
20°C +60°C
Or
-40°C +60°C
-20°C +60°C

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2.2 Agency approvals
The nameplate documents all safety and/or hazardous location
approvals that apply to the unit. See Figures 1 and 2 for name plate
configurations. All or some of the following approvals may apply:
Weatherproof
IP68
EN 60529 Weatherproof
Nema 4X NEMA250
FM 3616 Exproof IECEx IEC 60079-0
CSA 213
IEC
60079
-
1
CSA 25
Exproof CSA
CSA22.2 No.30
Exproof Atex
EN 60079
-
0
FM3615
EN 60079-1
Table 1: Approvals standards list
The declaration of conformity (Figure 3) lists the standards declared
by Milton Roy.
Figure 1. Weatherproof IP68 and NEMA 4X ACC nameplate
(for illustration only)
Figure
2
.
Figure 2. IECEX / ATEX / CSA ACC nameplate
(for illustration only)

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Figure
3
: Declaration of conformity

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3 TECHNICAL DEFINITION.
3.1 Technical specifications.
ACC Capacity Controller
Technical specifications ACC - ¾ turn ACC - 10 turns
GENERAL
Description
ACC actuators include a multi-voltage board to supply
a 24VDC motor,
Compact gear case, emergency manual command
and standard output with a square of 22mm
Max Torque 70N.m 40N.m
Max output speed 1 rpm 2 rpm
Duty Classification • Inching/Positioning: Class B actuators complying with
EN15714-2
ENCLOSURE - PROTECTION
Casing
• Aluminum gravity casting enclosure
• Cover fastened by captive and stainless-steel screws
Weather
proofness
• IP68 (comply with EN 60529, FM 3616, CSA 213,
CSA 25)
• NEMA 4X (comply with NEMA250)
Explosion proof See §2.1 and §2.2
Ambient
See §2.1 and §2.2
temperature range
MOTOR
Motor technology 24VDC motors with 2-wire connection to the control
boards
Motor duty rating
Inching/Positioning (complying with EN15714-2 Class
B): S4-50% motor duty rating. Up to 120 starts per
hour at peak of operation
Power supply
tolerance level (Voltage +/- 10%, frequency +/-2%)

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Nominal Motor
Power @ 50%
actuator load
20W 13.5W
Electrical
equipment
dissipated power
(ACC-10T
including motor @
85 Vac 50Hz and
100% load)
33 VA
Starting currents
AC: Is= 2 A (starting current)
DC: Is= 6 A (starting current)
Technical specifications ACC - ¾ turn ACC - 10 turns
MECHANICAL
SPECIFICATIONS
Gear design The Actuator is mechanically self-locking and
lubricated for product lifetime
Manual
emergency
operation
Manual emergency operation via a 10mm hexagonal
manual shaft
Output flange The Actuator flanges comply with ISO 5211 F07
Lubrication The actuators are lubricated for the product lifetime
and do not require any special service
ELECTRICAL SPECIFICATIONS
Power supply
The actuators can operate on a wide variety of single
phase power supply
From 85VAC to 260VAC 50/60Hz and 24VDC (12VDC
single power supply available on request)
Terminal
compartment
Push-in type terminals for controls and power supply
Internal and external earth grounding post.
Power Terminals wire section acceptance:
- From 24 to 14 AWG / 0.25 to 2.5mm²
Signal Terminals wire section acceptance:
-
From 24 to 16 AWG
/ 0.25 to 1.5mm²
Conduit entries 2 x ¾ NPT as standard (cable glands are not supplied)

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Technical specifications ACC - ¾ turn ACC - 10 turns
POSITION SENSORS
Inching/Positioning
Control
• Command isolated from the feedback signals
• 4-20mA analog input command given through 2
wires
• 4-20mA analog output feedback received through 2
wires
Travel Limit
systems
• Limit switches actuated
by adjustable cam-block
• 2 SPDT switches as
standard (Open and
Close) + 2 auxiliary
switches (customer
feedback) 250VAC-5A/
48VDC-2.5A (resistive
load)
Operated by the analog
positioner only
EC DIRECTIVES AND STANDARD
Compliance with
Directives and
Standard
ACC actuators comply with:
• Directive 2004/108/EC Electromagnetic compatibility
• Directive 2006/95/EC Low voltage
• The following harmonized standards:
EN 61000-6-4: Generic emissions standard for
industrial environments
EN 61000-6-2: Generic immunity standard for
industrial
environments
EN 60034-1: Rotating electrical machines
 Directive ATEX2014/34/UE
Table 2: Technical data
3.2 Product model coding
MAXROY®, mROY®, MILROYAL®, PRIMEROYAL® and PRIMEROY®
product family pumps can be ordered with or without an ACC already
attached. The pump model code can be found on the pump name
plate, mounted on the pump.
There are four ACC’s type supplied with a pump; these models are
shown in the product model code tables (Table 3). There are several
very similar ACC name plates and some of these are shown in Figure

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Page 11 of 33
1 and Figure 2. Please note that the Figure 2 data plate documents
what safety and/or hazardous location approvals apply to the unit.
Table 3: Pump Model codes
PUMP
Milton Roy
Actuator
Number
Type of Actuator Technical
definition
mROY® A or B
MILROYAL® D
PRIMEROYAL®K or L
PRIMEROY K or L
0280087000N ACC-10T
10 turns Ex-Proof
IECEx, ATEX &
CSA/FM
0280088000N ACC-10T 10 turns IP68
MAXROY® A, D or B 0280087100N ACC-3/4T
¾ turn Ex-Proof
IECEx, ATEX &
CSA/FM
0280088100N ACC-3/4T ¾ turn IP68

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4 START-UP.
4.1 Recommendation.
To avoid any risk of explosion, the actuator electric control and power
supply must be switched off before opening the cover.

Be careful not to damage the flameproof joint surfaces of
the cover either at the opening and closing of the cover.
Check its cleanliness when repositioning the cover onto the
actuator body. Tighten each cover screw.
When closing the cover, check the joints cleanliness. Be careful not to
damage the joints when repositioning the cover onto the actuator
body. Tighten each cover screw.
Screws of explosion-proof actuator body must be made of stainless
steel of class A2 or A4 of 70 daN/mm² minimum tensile strength.
In case of use in explosive dust atmosphere, check that cover
tightness gaskets are intact and make sure not to degrade the gaskets
while closing the cover.
The maximum temperatures of entry point or branching point are
68.2℃ and 71.6℃, please select proper cable or conductors for
installation.
Cable entries shall provide a level of protection equal or higher than
the one indicated on the actuator name plate. The user shall ensure a
regular cleaning of the product housing to avoid dust build-up.
Ensure that the cable glands or conduit entries comply with the
explosion-proof equipment standards and with the explosion-proof
classification. If one of them is not used, seal it with a certified and
suitable metal plug for the type of protection specified.
Figure 4. Cable glands or Conduit entries
! Do not open the cover when the actuator is under power.
Plug
5 t
hreads
minimum
5 threads

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Page 13 of 33
A connection to the earth must be wired using the actuator external
grounding plug. Internal and external groundings must be connected.

Remove all plastic plugs of unused conduit entries and replace
them by an explosion proof certified metal plug. The plastic
plug is not explosion-proof and is used only for shipping and
storage
The cable glands are not included on the standard product.
You could order the IECEX / ATEX cable glands kit number
3051570301F
Water-proofness: Because the NPT cable gland thread is not IP68, it’s
necessary to mount it with a thread sealant, for ex: Loctite 577
(Henkel).
4.2 Electrical Wiring.
Figure
5
.
Electrical
principle diagram

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5 OPERATION.
Never leave the cover open in order to avoid any risk of water inlet.
In case of use in explosive dust atmosphere, check that the cover
tightness O-rings are intact and make sure not to damage the seals
while closing the cover (see maintenance kit table 6)
6 MAINTENANCE.
Regularly check that the actuator explosion-proof enclosure has not
been degraded by a mechanical shock or any other type of
aggression.
Ensure a regular cleaning of the product housing to avoid dust build-
up.
Covers opening
!
Do not open the cover when the actuator is under power
or if an explosive atmosphere is present.

Flameproof joints are not intended to be repaired.
It is important not to degrade the explosion-proof protections (surfaces,
cable entries, joints ...). Use the notches or bosses in order to keep
sealing and cover integrity.
Do not bring any modification of any kind to the actuator. Any repair
operation requires a manufacturer agreement.
The actuator mechanical parts are greased for product lifetime and do
not need any specific maintenance. In case of a disassembly/re-
assembly operation, make sure that all moving parts are correctly
greased in order to prevent any electric spark.
Do not bring any modification of any kind to the actuator.
The actuator mechanical parts are greased and do not need any
specific maintenance. In case of a disassembly/re-assembly
operation, make sure that all moving parts are correctly greased in
order to prevent any electric spark.

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6.1 Installation area.
This actuator is an explosion-proof equipment and can be used in the
following areas:
EPL = Equipment’s Protection Level. b= high level Gas (G) and Dust
(D).
Zone 1 (gas): the explosive atmosphere is likely to occur occasionally
in normal operation.
Zone 2 (gas): the explosive atmosphere is not likely to occur in normal
operation but if it does occur, it will persist for a short period of time
only.
Division 1: the explosive atmosphere is likely to occur during periodic
maintenance or during normal operation.
Division 2: the explosive atmosphere is not likely to occur in normal
operation but in case of accidental rupture or abnormal operation.
! This device has not been designed to be operated in an area
where explosive atmosphere occurs frequently or during long
periods (IEC 79
-
10
-
zone 0).
Actuator type ACC (IECEx + ATEX) AQX L (CSA)
Protection
class Ex db
Class I Group C, D
Class II
Group E, F, G
C
lass III
C
ategory
2 (EPL Gb)
Division
Zone 1 or 2 Division 1 or 2
Atmosphere
G Gas Gas Dust

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Groups
This actuator has been designed for the surface industries groups B,
C or D.
Zone
Group
Division
Group
Typical gas
IIA
D Propane
IIB
C Ethylene
Not
available
on ACC
E Combustible Metal Dusts
F Combustible Carbonaceous Dusts
G Other Combustible Dusts
Table 4: Zone group ACC design
For other gases, please consult a notified body (e.g. CSA or INERIS).
Temperature
The temperature class corresponds to the actuator maximum surface
temperature.
Class
Max surface temperature
T6 185°F (85°C)
Table 5 : Temperature class
 Check group and temperature class on the actuator tag.
6.2 Electrical and temperature parameters.
The power supply voltage and frequency are indicated on the name
plates and (or) on the electric wiring diagram.
The minimum ambient temperature is -4°F (-20°C) and the maximum
+140°F (60°C) unless another information is mentioned on the name
plates.
6.3 Special operation conditions including incorrect
practices.
Duty cycle: Motors are designed for an intermittent operation; it means
that they should be stopped for a sufficient period of time after each
operation in order to enable it to cool down (see table 2).

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! If the operating time is too high, the motor temperature will
raise and there will be a risk to damage the motor.
6.4 Spare parts.
Parts orders must include the following information:
Pump serial number (on pump nameplate)
Model number (on ACC nameplate)
Part description
Quantity required
Always include the serial and model numbers in all correspondence
regarding the unit.
Designation Kit Number Work instruction
number
Seal kit
3051570001F
1602101011
Cover kit
3051570003F
1602101021
Indicator Disc kit
3051570004F
1602101031
Power Board kit
3051570100F
1602101041
Relay
Board kit
3051570300F
1602101061
Positioner Board kit
3051570201F
1602101051
Table 6: Maintenance Kits

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6.5 Returning units to the factory.
The Actuator Capacity Control (ACC) units will not be accepted for
repair without a Return Material Authorization, available from the
Factory Repair Department. If the ACC is being returned attached to
a pump, process liquid should be flushed from the pump liquid end
and oil should be drained from the pump housing before the pump is
shipped. Label the unit clearly to indicate the liquid being pumped.
NOTE
Federal law prohibits handling of equipment that is not
accompanied by an OSHA Safety Data Sheet (SDS). A completed
SDS must be packed in the shipping crate if the ACC is returned
attached to a pump. These safety precautions will aid the
troubleshooting and repair procedure and preclude serious injury
to repair personnel from hazardous residue in pump liquid end.
All inquiries or parts orders should be addressed
to your local Milton Roy representative.
Representatives can be found on our website
(www.miltonroy.com).
6.6 Trouble shooting.
SYMPTOMS REMEDIES
ACC moves to
same position
regardless of
signal applied
● Improper command signal applied to ACC.
Connect mA meter into signal line. Read signal. If
necessary, correct signal source, possible broken
wire, loose connection, etc.
● Mode setup incorrect. Review inial start-up
procedure.

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Page 19 of 33
ACC does not
respond to 4-20
mA command
signal
● No power to ACC. Correct by applying AC / DC
power to ACC.
● Polarity of 4-20 mA signal wires connected to
terminals may be backwards. Check polarity and
correct if improper.
●Incorrect Mode setup. Review initial start-up
procedure.
● Bad printed circuit board. Replace PC board.
ACC will only
travel in one
direction
●Incorrect Mode setup. Review initial start-up
procedure.
● Bad printed circuit board. Replace PC board.
ACC chatters or
vibrates
● The ACC is driving the pump adjustment against
the pump’s mechanical stop. Reset the ACC and
pump high and low limits per calibration
procedure.
● Incorrect Mode setup. Review initial start-up
procedure.
● If the limits are okay, then circuit board and/or
feedback potentiometer should be replaced.
A red LED turns
ON on the ACC
Relay board
● Too high torque applied at the actuator’s
output. Check if anything could block the
rotation.
Table 7: Trouble shooting
7 STORAGE.
7.1 Packaging & Storage.
The ACC actuator is delivered in a cardboard box equivalent to the
size of the actuator and sits in a cardboard wedge.
It should be stored under a shelter, in a clean and dry place and
protected from wide temperature variations.

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
 Avoid placing the actuator directly on the floor.
 Check that cable entries plugs are correctly tightened

Check that
cover screws are correctly tighten
ed
.
7.2 What to check after storage?
1. Visually check the electrical equipment.
2. Controlled, no external enclosure damage.
7.3 What to check on pre-installed actuators?
If you expect a long period between actuator mounting and electrical
wiring:
1. Visually check that cable entries and cover are tightly closed.
2. In case of outdoor installation, cover the unit with a plastic
protective film.
An actuator consists of electrical components plus mechanical parts
which have life-long lubrication. Although the assembly is contained in
a waterproof housing, the actuators may suffer from oxidation,
become clogged or seize during commissioning if it has not been
stored correctly.
8 MECHANICAL SET-UP.
The actuator must be assembled according with the position defined
in the general arrangement drawing of the pumps.
8.1 Adapting the actuator to your pump input.
The Actuator assembly kit is supplied with your pump to ensure the
output fits on your pump shaft.
All information regarding the adaptation of the Actuator on your pump
are available in the pump IOM.

However:
 It is not recommended to install actuator with cover downwards
 Cable glands must not be oriented upwards
(loss of water tightness)