USER INSTRUCTIONS
Limitorque
FCD LMENIM2306-09-AQ - 08/17
®
MX Electronic Actuator
Installation
Operation
Maintenance
Experience In Motion
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Contents
1 Important Notes 8
2 Quick Start 10
2.1 Calibrate – Position Limits 11
2.1.1 Entering the Setup Mode 11
2.1.2 Electrical Operation Feature 11
2.1.3 Handwheel Operation Feature 12
2.2 DDC/Modbus Option 14
2.3 Check the Settings 14
3 Installation and Operation 15
3.1 Preparing the Stem Nut 15
3.1.1 Type “B” Bases: Torque-only Applications 15
3.1.2 Type “A” Bases: Thrust-only Applications 17
3.1.3 Type “BL” Drive: Splined Drive Application 21
3.2 Mechanical Installation Onto Valve or Gearbox 21
3.2.1 Mounting (Type “B” Bases): Torque-only 22
3.2.2 Removal (Type “B” Bases): Torque-only 22
3.2.3 Mounting (Type “A” Bases): Thrust-only 22
3.2.4 Removal (Type “A” Bases): Thrust-only 22
3.3 Electrical Connections 23
3.3.1 Removing Terminal Cover 23
3.3.2 Terminal Compartment Documents 23
3.3.3 Sealing Cable/Conduit Entries 23
3.3.4 Recommended Terminal Connections 23
3.3.5 Termination of Cables 25
3.3.6 Cable Connections 25
3.3.7 Network Installations 25
3.3.8 Foundation Fieldbus Installation 29
3.3.9 Network Wiring – Profibus DP/PA Installation 30
3.3.10 Network Wiring – DeviceNet 30
3.3.11 HART Installation 31
3.3.12 Replacing Terminal Cover 31
3.3.13 External Earth/Ground Connections 31
3.4 Terminal Block Shield Installation 31
3.5 Commissioning the Actuator 31
3.5.1 Default Configuration Set 32
3.5.2 View the Existing Settings 33
3.5.3 Entering the Setup Mode 33
3.5.4 Setting Position Limits 34
3.6 Operating the MX Actuator 37
3.6.1 Manual Operation 37
3.6.2 Electrical Operation 37
3.6.3 Local Control 37
3.6.4 Remote Control 38
3.6.5 Local Indication 38
4 Customizing the Actuator 39
4.1 Changing the Existing Settings 39
4.2 Password Entry 42
2
4.3 New Password 42
4.4 Valve Setup 43
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
4.4.1 Close Direction 43
4.4.2 Close Seating 43
4.4.3 Open Seating 43
4.5 Torque Switch Timer 44
4.5.1 Status 44
4.5.2 Torque Timer 44
4.6 Torque Setup 45
4.6.1 Close Torque Valve or Open Torque Valve 45
4.7 Position Setup 46
4.7.1 Set Position Limits for Electrical Operation 46
4.7.2 Set Position Limits for Manual Operation 46
4.8 Modutronic Option 48
4.8.1 Status 48
4.8.2 Proportional Band 48
4.8.3 Fail Position 48
4.8.4 Deadband 48
4.8.5 Polarity (20 mA) 48
4.8.6 Delay After Stop 49
4.8.7 4-20 mA Signal Range 49
4.8.8 Set High Reference 49
4.8.9 Set Low Reference 49
4.8.10 Modutronic LCD Display 50
4.9 DDC/Modbus Option 50
4.9.1 Status 50
4.9.2 Network Address 51
4.9.3 Protocol 51
4.9.4 Analog Scale 51
4.9.5 ESD Action 51
4.9.6 Proportional Band 52
4.9.7 Deadband 52
4.9.8 Offset 52
4.9.9 Move To 52
4.9.10 Comm Loss Delay 52
4.9.11 Comm Loss Action 52
4.10 FF Option 52
4.10.1 Status 53
4.10.2 Terminate Bus 53
4.10.3 Analog Scale 53
4.10.4 ESD Action 53
4.10.5 OPEN/CLOSE Mode 53
4.10.6 Proportional Band 53
4.10.7 Deadband 53
4.10.8 Comm Loss Delay 54
4.10.9 Comm Loss Action 54
4.11 PB Option 54
4.11.1 Status 55
4.11.2 PB DP Operation 55
4.11.3 Comm Loss Delay 56
4.11.4 Comm Loss Action 56
4.12 DN Option 57
4.12.1 Status 57
4.12.2 Baud Rate 57
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
4.12.3 Network Address 57
4.12.4 Analog Scale 57
4.12.5 ESD Action 57
4.12.6 Proportional Band 58
4.12.7 Deadband 58
4.12.8 Comm Loss Delay 58
4.12.9 Comm Loss Action 58
4.13 HART Option 59
4.13.1 Status 59
4.13.2 Multi-drop 59
4.13.3 Input Action 60
4.13.4 Fail Position 60
4.13.5 Polling Address 60
4.13.6 Save Settings 60
4.13.7 Change Prop/Deadband 60
4.13.8 ESD Action 60
4.13.9 Change clock 61
4.14 Status and Alarm Contacts 61
4.14.1 Status and Alarm Contact Default Settings 61
4.14.2 Status Function 62
4.14.3 Contact 62
4.14.4 Valve Position 63
4.15 Two-speed Timer (Optional) 63
4.15.1 Status 63
4.15.2 Start Position 63
4.15.3 Stop Position 63
4.15.4 Pulse Time – ON 63
4.15.5 Pulse Time – OFF 64
4.16 Analog Output 64
4.16.1 APT Polarity Option 67
4.16.2 ATT Polarity Option 67
4.17 Remote Mode 68
4.17.1 Local Control 68
4.17.2 LED Customization 69
4.18 ESD (Emergency Shutdown) Overrides 69
4.18.1 ESD Override 69
4.18.2 Inhibit 70
4.18.3 Local Command 70
4.18.4 Stop 70
4.18.5 Jammed Valve* 70
4.18.6 Lost Phase* 70
4.18.7 Overtorque* 71
4.18.8 Motor Thermostat 71
4.18.9 Oil Over Temperature 71
4.18.10 Two-speed Timer 71
4.18.11 Network ESD 71
4.18.12 Torque Switch Timer 72
4.19 Inputs 72
4.19.1 Input Standard Remote Control 72
4.19.2 Status 73
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4.19.3 Custom Input Mode #1 – Momentary ESD/PSESD (Optional) 73
4.19.4 Custom Input Mode #2 – Momentary ESD/CSE (Optional) 76
4.19.5 Custom Input Mode #3 – ESD Time Delay Relay 76
4.19.6 Custom Input Mode #4 – Multi-position mode (optional) 77
4.19.7 Limigard Controls 78
4.19.8 SIL Mode – Standard SIL (Optional) 78
4.19.9 SIL Mode – Enhanced SIL (Optional) 79
4.20 Monitor Relay 82
4.21 Diagnostic Reset 83
4.22 TAG Number 83
4.23 LCD Contrast 84
4.24 Torque Boost 84
4.25 Motor Thermostat 85
4.26 Change Valve Data 85
4.27 Change Port 86
5 Troubleshooting 87
5.1 View Diagnostics Routine 87
5.2 Troubleshooting Problems/Corrective Action 87
5.2.1 Actuator Fails to Operate 87
5.2.2 Jammed Valve Detected 88
5.2.3 Actuator Operates but Does Not Drive Valve 89
5.2.4 Valve Does Not Seat Correctly 89
5.2.5 Status Messages 89
5.3 View Diagnostics 92
5.4 View Hardware Status 93
5.5 View Motor Status 94
5.6 View Power Supply 95
5.7 View Identification 95
5.8 View Torque Profile 96
5.9 View Operation Log 97
5.10 View DNET Status? 98
6 Maintenance 100
6.1 Lubrication 100
6.1.1 Oil Capacities 100
6.1.2 Checking Oil Level 100
7 Regulatory Information 101
7.1 Specific Conditions of Use
for Atex and IECEx Applications 104
7.2 Statement of Compliance With Applicable European Directives 104
7.3 Single-Phase MX Full Load Amperage values (FLA) 106
(denoted by X after the certificate number)
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Figures
Figure 1.1 – MX-05 Actuator 8
Figure 2.1 – Electrical operation 12
Figure 2.2 – Handwheel operation 13
Figure 3.1 – B4 base 15
Figure 3.2 – B4E base 16
Figure 3.3 – Exploded view of B4/B4E base (MX-05 shown) 16
Figure 3.4 – B1 base 17
Figure 3.5 – Exploded view of B1 base 17
Figure 3.6 – A1 base 17
Figure 3.7 – Exploded view of A1/A1E base (MX-05/10/20/40 only) 18
Figure 3.8 – Exploded view of thrust base (MX-85 only) 20
Figure 3.9 – Exploded view of thrust base (MX-140/MX-150 only) 21
Figure 3.10 – Power terminal connector size limitations 24
Figure 3.11 – Terminal block rating; power terminals 24
Figure 3.12 – Control terminal connector size limitations 24
Figure 3.13 – View of terminal block 26
Figure 3.14 – Standard wiring diagram 26
Figure 3.15 – Removing outer plastic jacket 27
Figure 3.16 – Separating cable parts 27
Figure 3.17 – Stripping conductors and applying heat shrink tubing 28
Figure 3.18 – Ring tongue connectors 28
Figure 3.19 – Terminal block shield 31
Figure 3.20 – User network connection for loop topology/Typical for all two-wire network protocols 32
Figure 3.21– External earth/ground connection – housing 32
Figure 3.22 – View settings 34
Figure 3.23 – Position setup – electrical operation 36
Figure 3.24 – Declutch lever shows direction of engagement (MX-05 shown) 37
Figure 3.25 – Control panel 38
Figure 4.1 – Entering the setup mode 40
Figure 4.2 – Main menu selections 41
Figure 4.3 – Changing settings 41
Figure 4.4 – Password entry 42
Figure 4.5 – New password 43
Figure 4.6 – Torque Switch Timer 44
Figure 4.7 – MX Nameplate 45
Figure 4.8 – Torque setup 45
Figure 4.9 – Electrical operation 47
Figure 4.10 – Handwheel operation 47
Figure 4.11 – Modutronic option 49
Figure 4.12 – Modutronic signals 50
Figure 4.13 – DDC 51
Figure 4.14 – FF 54
Figure 4.15 – Profibus DP 55
Figure 4.16 – Profibus PA 56
Figure 4.17 – DN option 58
Figure 4.18 – HART 59
Figure 4.19 – Status and alarm contacts (Shown with optional boards needed) 62
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Figure 4.20 – Two-speed timers 64
Figure 4.21 – Change analog out 64
Figure 4.22 – Change analog out voltage – APT 65
Figure 4.23 – Change analog out current 65
Figure 4.24 – Change analog out voltage – ATT 66
Figure 4.25 – Change analog out current – ATT 66
Figure 4.26 – Remote mode 68
Figure 4.27 – Local control 68
Figure 4.28 – ESD overrides 69
Figure 4.29 – Custom input modes 75
Figure 4.30 – Inputs 77
Figure 4.31 – Inputs 78
Figure 4.32 – SIL control (Standard) 79
Figure 4.33 – SIL control (Enhanced) 81
Figure 4.34 – Monitor Relay Configuration 82
Figure 4.35 – Diagnostic reset 84
Figure 4.36 – TAG number 84
Figure 4.37 – LCD contrast 84
Figure 4.38 – Torque boost 85
Figure 4.39 – Motor thermostat 85
Figure 4.40 – Change valve data 86
Figure 4.41 – Change port and Bluetooth settings 86
Figure 5.1 – Initialize routine 81
Figure 5.2 – Single phase only Initialize Routine 92
Figure 5.3 – Diagnostic overview 93
Figure 5.4 – View Hardware Status for Single Phase 93
Figure 5.5 - View three phase ACV hardware status 94
Figure 5.6 – View three phase ACV motor status 94
Figure 5.7 View Single Phase Motor Status 94
Figure 5.8 – View power supply 95
Figure 5.9 – View Single Phase Power supply 95
Figure 5.10 – View identification 95
Figure 5.11 – View Single Phase Identification 96
Figure 5.12 – View torque profile 96
Figure 5.13 – View operation log 97
Figure 5.14 – View DNET status 98
Figure 7.1 - Typical three-phase IEC nameplate 107
Figure 7.2 - Typical Single Phase MX IECEx Nameplate 108
Figure 7.3 – Typical Three Phase MX ATEX Nameplate 109
Tables
Table 3.1 - Hardware and torque for thrust base mounting 19
Table 3.2 – Terminal block rating; control terminals 25
Table 3.3 – Required ratings for external wires 25
Table 3.4 – Loop topology connections 28
Table 3.5 – Foundation fieldbus connections 29
Table 3.6 – Profibus cable specifications 30
Table 3.7 – DeviceNet cable specifications 30
Table 3.8 – Default configurations 33
Table 3.9 – LED indicators – default settings 38
Table 4.1 – Digital input terminals 80
Table 7.1 – EMC, EMI standards 105
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9
10
Figure 1.1 – MX-05 Actuator
3
12
4
8
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Piece Description
1 Handwheel
1
2
5
6
2
2 Declutch Lever (MX-05)
3 Oil Fill
4 Controls Cover
5 LCD
6 Control Knob
7 Ground Lug
8 Thrust/Torque Base
9 Conduit Entry
10 Terminal Compartment
11 Motor
12 Nameplate
Important Notes
1
• Please read this manual in its entirety before attempting to install or operate your MX actuator. A full understanding
of the installation and operation options will assist you in installing the actuator in the most effective manner.
Limitorque has designed the MX actuator for long life even in the harshest environments. Flexible control and
protection options are provided to ensure the actuator meets your requirements.
• All actuator enclosures are sealed by O-rings, and cable entries are supplied with threaded plugs to protect the
terminal compartment until the unit is wired. If the actuator cannot be installed immediately, it is recommended that
it be stored in a clean, dry place, preferably in an area that is not subject to large fluctuations in temperature.
• Disconnect all incoming power before opening any cover on the actuator. The user/operator must ensure that safe
working practices are employed at all times and are in accordance with local or national standards that are enforced
at the particular site.
• To install and commission the actuator, only the terminal compartment cover needs to be removed. See Figure
1.1, Item 10. Settings for commissioning the actuator are done externally; therefore, no other covers need to be
8
removed. The actuator was assembled in ideal dry conditions and the total sealing of the enclosure protects all
electrical components against deterioration.
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
NOTE: Removal of any cover, other than the terminal compartment cover, will invalidate the unit warranty. Exposure
of actuator components to an environment that results in deterioration of internal components will also invalidate the
unit’s warranty.
• During final field installation, ensure that all cable entries are correctly sealed in accordance with National Standards
or Regulatory Authorities. All temporary transit plugs must be removed and any unused cable entries closed in an
approved manner. See Section 3.3.3, Sealing Cable/Conduit Entries.
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Quick Start
2
Quick Start provides step-by-step instructions for commissioning each MX actuator. This information is also available in
Bulletin LMENIM2310, Quick Start-Up Instructions. These instructions are for the following:
• Position limits calibration – can be performed one of two ways:
1. Electrical operation: See Section 2.1.2, Electrical Operation Feature.
2. Handwheel operation: See Section 2.1.3, Handwheel Operation Feature.
• DDC operation: See Section 2.2, DDC Option.
• FF operation: See Section 4.10, FF Option.
• PB operation: See Section 4.11, PB Option.
• DeviceNet operation: See Section 4.12. DN Option.
• HART Operation: See Section 4.13, HART Option
When these Quick Start instructions are complete, the position limits will be set and the actuator will be ready for
normal operation.
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NOTE: The actuator has been configured with all customer-specified parameters and no further calibration should be
necessary. If full valve data was not provided when ordering, or if changes are needed for parameters, see Sections 4,
Customizing the Actuator.
2.1 Calibrate – Position Limits
1. Install the MX actuator on the valve.
2. Refer to the nameplate for the correct main power supply voltage. Switch on the main power to the unit.
3. Turn the red knob to the STOP position. The “SET CLOSE POSITION LIMIT” message will be displayed. When the
red knob is in “LOCAL” or “REMOTE,” the liquid crystal display (LCD) screen will read “SET POSITION LIMITS.”
4. Calibrate end position limits one of two ways:
• Electrically, using the control panel. See Section 2.1.2, Electrical Operation Feature and Figure 3.25 for control
panel and Table 3.9 for LED indication.
• Manually, using the handwheel. See Section 2.1.3, Handwheel Operation Feature.
Once the position limits have been set, the screen message will indicate the valve position as a percentage of the valve
opening.
While setting limit switches, place the red selector knob in the “LOCAL” position to permit the actuator to run open or
closed in push-to-run mode (inching) only.
CAUTION: Extreme care must be taken as the valve approaches its end position.
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
The unit will not function with the red selector knob in the “REMOTE” position until both limit switches are set.
The existing configuration of the actuator/valve parameters may be viewed by entering the “SETUP” mode.
2.1.1 Entering the Setup Mode
1. Place the red selector knob in the “STOP” position.
2. Within 10 seconds, place the black control knob in the “YES” position, then the “NO” position, then again in the
“YES” position (in quick succession—approximately one-two seconds).
3. The message “SETUP?” will appear in the LCD display for 10 seconds. If no setup action is taken within 10
seconds, the unit will reset.
4. Use the black control knob to answer “YES” or “NO” to the questions appearing in the display.
2.1.2 Electrical Operation Feature
This feature allows for quick and simple calibration. To set the position limits electrically, enter the “CHANGE SETTINGS”
mode via the “SETUP” mode.
1. Enter the “SETUP” mode as detailed in Section 2.1.1, Entering the Setup Mode.
2. When screen prompt reads “CHANGE SETTINGS,” select “YES.”
3. The screen will display the “CHANGE SETTINGS” mode menu items. Select “NO” until screen displays “CHANGE
POSITION SETUP.” User may select to set close limit first or open limit first.
4. Select “YES.” “CLOSE” or “OPEN VALVE - OK?” is displayed.
5. Place the red selector knob in the “LOCAL” position. Move the black knob in the intended direction. The LCD
screens are shown in Figure 2.1.
6. When valve has reached desired position, return the red selector switch to “STOP” and complete calibration.
The position settings are now complete. The actuator will now function as ordered, and may be run electrically to
inspect for correct operation.
CAUTION: On some valves, position limits could be set adjacent to each other, so be careful that the Close and
a
Open limits are set sufficiently apart to permit operation. If the limits are set adjacent of each other, an error
message will be displayed: “KEEP OPEN(CLOSE) LIMIT?”
NO FURTHER MOVEMENT IS PERMITTED UNTIL THE ERROR IS CORRECTED.
Should the User elect to proceed with the setting, an error will be displayed on the screen after re-booting
stating “IDENTICAL LIMITS”. THE ACTUATOR WILL NOT MOVE UNTIL THE ERROR IS CORRECTED.
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Figure 2.1 – Electrical operation
P
SET CLOSE
POSITION LIMIT?
YES
CLOSE VALVE
OK ?
NO
NO
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
2
Switch to
LOCAL
“NO ” operates
close direction
CLOSE VALVE
RETURN TO STOP
NO
STOP
CLOSE VALVE
OK ?
NO
YES
SAVE CLOSE
LIMIT OK?
YES
IDENTICAL LIMITS
KEEP CLOSE LIMIT?
1
YES
NO
YES
NO
YES
NO
SET OPEN
POSITION LIMIT?
NO
SET POSITION
PRECISION?
NO
YES
YES
NO
OPEN VALVE
OK ?
NO
POSITION
XXX% OPEN?
NO
POSITION
XXX.X% OPEN?
Switch to
LOCAL
“YES” operates
open direction
YES
YES
OPEN VALVE
RETURN TO STOP
YES
STOP
SETUP?
EXIT
SETUP?
NO
NO
OPEN VALVE
OK ?
NO
YES
YES
YES
Enter “SETUP ” mode
100% OPEN
STATUS OK?
SAVE OPEN
LIMIT OK?
NO
2
YES
IDENTICAL LIMITS
KEEP OPEN LIMIT?
1
YES
NOTE 1: If open and close limits
are not identical
NOTE 2: If open and close limits
are identical
2.1.3 Handwheel Operation Feature
To set the position limits manually, enter the “CHANGE SETTINGS” mode via the “SETUP” mode.
1. Enter the “SETUP” mode as detailed in Section 2.1.1, Entering the Setup Mode.
2. When LCD reads “CHANGE SETTINGS?”, select “YES.”
3. The LCD will display the “CHANGE SETTINGS” mode menu items. Select “NO” until screen displays “CHANGE
POSITION SETUP?”
4. Select “YES.” See Figure 2.2. Manually set position limits:
a. Close position limit
1. “SET CLOSE POSITION LIMIT?” is displayed.
2. Select “YES.” “CLOSE VALVE - OK?” is displayed.
3. Depress the declutch lever, and at the same time slowly rotate the handwheel until the clutch is fully
engaged. Release the lever; the clutch will be retained in the handwheel mode by spring-loaded latches.
4. Ensure the valve is fully closed, then move the valve in the open direction for one handwheel turn to allow
for coasting of the motor.
5. When the valve is in the desired position, select “YES” again. The LCD will read “SAVE CLOSE LIMIT OK?”
6. Select “YES” if the valve’s close limit position is correct. The close position limit is set.
b. Open position limit
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1. “SET OPEN POSITION LIMIT?” is displayed.
2. Select “YES.” “OPEN VALVE - OK?” is displayed.
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
STO
NO
3. Depress the declutch lever, and at the same time slowly rotate the handwheel until the clutch is fully
engaged. Release the lever; the clutch will be retained in the handwheel mode by spring-loaded latches.
4. Ensure the valve is fully open, then move the valve in the close direction for one handwheel turn to allow
for coasting of the motor.
5. When the valve is in the desired position, select “YES” again. The LCD will read “SAVE OPEN LIMIT OK?”
6. Select “YES” if the valve’s open position limit is correct. The open position limit is set.
7. Move the valve in the close direction. The open lamp should extinguish within one turn of the handwheel.
8. Move the valve back in the open direction and check that the open lamp illuminates just before the full open
position is reached (approximately ½ to 1 turn).
9. If the calibration requires adjustment, select “NO” at the “SET CLOSE POSITION LIMIT?” prompt and
repeat the “SET OPEN POSITION LIMIT?” routine.
10. Select “NO” to exit “POSITION SETUP?” or “YES” to return to “SET CLOSE POSITION LIMIT?”
CAUTION: On some valves, position limits could be set adjacent to each other, so be careful that the Close and
a
Open limits are set sufficiently apart to permit operation. If the limits are set adjacent to each other, an error
message will be displayed: “KEEP OPEN(CLOSE) LIMIT?”
NO FURTHER MOVEMENT IS PERMITTED UNTIL THE ERROR IS CORRECTED.
Should the User elect to proceed with the setting, an error will be displayed on the screen after re-booting
stating “IDENTICAL LIMITS”. THE ACTUATOR WILL NOT MOVE UNTIL THE ERROR IS CORRECTED.
Figure 2.2 – Handwheel operation
P
SET CLOS E
POSITION LIMIT?
SET OPEN
POSITION LIMIT?
SET POSITION
PRECISION?
YE S
CLOSE VALVE
NO
YE S
OPEN VALVE
NO
YES
POSITION
XXX% OPEN
NO
YE S
OK ?
Declutch actuator;
Rotate handwheel to
NO NO
“ CLOS E ” position limit
OK ?
Rotate handwheel to
NO
“ OPEN ” position limit
NO
SAVE CLOS E
YE S
SAVE OPEN
LIMIT OK?
LIMIT OK?
SETUP?
YE S
YE S
NO
YES
Enter “SETUP” mode
NO
EXIT
SETUP?
YES
100%
STATUS OK
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2.2 DDC/Modbus Option
The following instructions assume that all DDC option parameters are set with the exception of the address.
1. After setting position limits, remain in the “SETUP” mode. If not in the “SETUP” mode, enter the “SETUP” mode as
detailed in Section 2.1.1, Entering the Setup Mode.
2. When LCD reads “CHANGE SETTINGS?”, select “YES.”
3. The LCD will display the “CHANGE SETTINGS” mode menu items. Select “NO” until screen displays “CHANGE
DDC?” Select “YES.” LCD will display DDC menu items.
4. Select “YES” for each menu item until “DDC ADDRESS OK?” appears. Select “NO.”
5. Enter an address from 1 to 250 by toggling “NO” until the correct address is displayed. User may select to hold
the knob in the “NO” direction and the number will automatically increment by one until the preferred address is
reached.
CAUTION: The network address must be entered in accordance with the user address assignment sheet.
a
This assignment sheet should correspond to the contract specifications. The same address must not be used
anywhere else in the same network.
The DDC address does not have to be set to exit the setup.
2.3 Check the Settings
1. Operate the valve to the fully “CLOSE” position. Verify that the “CLOSE” (default GREEN) LED illuminates just as the
travel limit is reached, and the valve position is displayed as “0% OPEN.”
2. Operate the valve to the fully “OPEN” position. Verify that the “OPEN” (default RED) LED illuminates just as the
travel limit is reached, and the valve position is displayed as “100% OPEN.”
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Installation and Operation
3
3.1 Preparing the Stem Nut
The MX has two (2) basic base designs:
• Torque-only base, designated by a “B” prefix
• Thrust-only base, designated by an “A” prefix
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
3.1.1 Type “B” Bases: Torque-only Applications
Standard B4/B4E Base
The standard MX actuator base is the B4 torque-only. It includes a mounting plate and steel torque nut, which may
be machined to fit a valve or gearbox. A B4E torque nut can be provided and may be installed to allow for extended
stem acceptance.
NOTE: Some MX actuators are supplied with single piece drive sleeves that have been bored and keyed. These are
typically mounted directly to gearboxes. The MX actuator maybe mounted in any position as long as the handwheel
is accessible.
Figure 3.1 – B4 base
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Baseplate
Drive sleeve
Figure 3.2 – B4E base
Figure 3.3 – Exploded view of B4/B4E base (MX-05 shown)
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MX base
Torque nut
Retaining ring
Disassembly
1. Remove the retaining ring (B4 base) or spiral-wound ring (B4E base) that retains the torque nut in the drive sleeve.
2. Remove the torque nut. If the torque nut is difficult to remove, insert a suitable device into the drive sleeve through
bore and gently tap it loose from the handwheel end.
3. Machine the torque nut to suit the valve stem or gearbox input shaft (see LMENSS2326, MX Performance and
Dimensions for maximum stem capacity). Ensure sufficient clearance for a smooth, sliding fit.
Reassembly
1. Clean the torque nut thoroughly and lightly grease.
2. Replace the torque nut in the drive sleeve. Ensure the torque nut meshes with the drive lugs.
3. Refit the retaining ring (B4 base) or spiral-wound ring (B4E base).
Optional B1 Base (not available for MX-85, MX-140 and MX-150)
An optional torque base assembly may be added to allow for a greater stem acceptance. This base is supplied with a
fixed bore and key as defined by ISO 5210.
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
torque/thrust
Pilot, torque/thrust
Pipe plug
MX-05 B1
MX-40 B1
Disassembly
No disassembly is required since the torque nut has been machined to an international standard. Clean the bore and
lightly grease.
Figure 3.4 – B1 base
NOTE: Fill base with a Lithium based EP0 grease.
Figure 3.5 – Exploded view of B1 base
Socket head cap
screw (M8 x 20)
Torque nut (B1)
Bearing
Retainer, bearing
Thrust nut
assembly
Socket head
cap screw (M4 x 8)
Socket head set screw
Housing,
Pipe plug
Washer (M4)
3.1.2 Type “A” Bases: Thrust-only Applications
Standard A1/A1E Base
The standard MX actuator thrust base is the A1, and may be bolted directly to the actuator. The thrust base contains a
bronze alloy thrust nut that may be machined to suit the valve stem.
An A1E (extended) thrust nut can be provided and may be installed to reach shorter stems.
Figure 3.6 – A1 base
Disassembly – Units MX-05/10/20/40
Refer to Figure 3.7.
Disassembly of the main housing from the base may be recommended to allow the base to remain on the valve if the
actuator must be removed for service.
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Housing
extended nut
Pilot removal
MX-10/20: Remove the screw and washer holding the valve pilot to the thrust base and remove pilot.
MX-40: Turn counterclockwise (CCW) and remove.
Thrust bearing and nut removal
1. Remove the first set of thrust washers and bearing.
2. Remove stem nut.
NOTE: The thrust washers, bearing, and thrust nut may be removed at the same time. The second set of thrust washers
and bearing does not have to be removed.
3. Machine the thrust nut to suit the valve stem. Ensure sufficient clearance to avoid unnecessary wear and heating
during operation.
Reassembly – Units MX-05/10/20/40
Refer to Figure 3.7.
1. Clean the thrust nut, washers, and bearing(s) thoroughly.
2. Slide second set of thrust washers and bearing in place if removed.
NOTE: Order of assembling thrust washers and bearing must be as follows: washer, thrust bearing, washer.
Pilot installation
MX-05/10/20: Slide pilot into thrust base assembly and secure with washer and screw. Tighten fully.
MX-40: Place pilot into thrust base and turn clockwise (CW) until pilot is tight.
NOTE: Fill base with Nebula EP 0, Conoco Conolith EP 00, Mobil SHC 632, Dynalife-L-EP0, Triton ELL, or Lithium based
EP0 grease.
Disassembly – Units MX-85
Refer to Figure 3.8.
Disassembly of the main housing from the base may be recommended to allow the base to remain on the valve if the
actuator must be removed for service.
Thrust base mounting plate removal
Remove the six socket head cap screws holding the valve mounting plate to the thrust base housing and remove
mounting plate.
Figure 3.7 – Exploded view of A1/A1E base (MX-05/10/20/40 only)
Socket head cap
Thrust washer
Quad ring
Thrust Nut
Thrust washer
O-ring
Thrust
pilot
18
Washer
Socket head cap screw
Quad ring
Needle bearing
Thrust base
standard nut
Pipe plug
Thrust base
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Thrust bearing and nut removal
1. Remove the first set of thrust washers and bearing.
2. Remove stem nut.
NOTE: The thrust washers, bearing, and stem nut may be removed at the same time. The second set of thrust washers
and bearing does not have to be removed.
3. Machine the stem nut to suit the valve stem. Ensure sufficient clearance to avoid unnecessary wear and heating
during operation.
Reassembly – Units MX-85
Refer to Figure 3.8.
1. Clean the stem nut, washers, and bearing(s) thoroughly.
2. Slide second set of thrust washers and bearing in place if removed.
3. Install stem nut. Lubricate thoroughly.
4. Install first set of thrust washers and bearing.
NOTE: Order of assembling thrust washers and bearing must be as follows: washer, thrust bearing, washer.
NOTE: Fill base with Nebula EP 0, Conoco Conolith EP 00, Dynalife-L-EP0, Mobil SHC 632, Triton ELL, or Lithium based
EP0 grease.
Thrust baseplate installation
Mount baseplate to thrust base housing and install the six socket head cap screws to the proper torque per Table 3.1.
Table 3.1 – Hardware and torque for thrust base mounting
Screw Size
5
⁄16 in. (8 mm) 12-14 16-19
M8 or
3
⁄8 in. (9 mm) 25-30 33-40
M10 or
M12 or ½ in. (13 mm) 40-50 53-67
5
⁄8 in. (16 mm) 90-100 122-135
M16 or
M20 or ¾ in. (19 mm) 180-200 244-271
ft-lb N m
Torque
NOTE: Screw mounting torque for mounting thrust base to main housing or thrust baseplate to thrust base housing.
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
with standard nut
with extended nut
A
Socket head
cap screw
Housing
Pipe plug
Figure 3.8 – Exploded view of thrust base (MX-85 only)
Socket head
cap screw s
Thrust bearing
Thrust nut
Baseplate
Thrust bearing
s
Quad ring
Thrust
washer
O-ring
Quad ring
Thrust
washer
A
Section A-A
View show n
Section A-A
View show n
Disassembly – Units MX-140/MX-150
Refer to Figure 3.9.
Disassembly of the main housing from the base may be recommended to allow the base to remain on the valve if the
actuator must be removed for service.
Pilot removal
Remove the two screws and washers holding the valve pilot to the thrust base and remove pilot.
Thrust bearing and nut removal
1. Remove the first set of thrust washers and bearing.
2. Remove stem nut.
NOTE: The thrust washers, bearing, and stem nut may be removed at the same time. The second set of thrust washers
and bearing does not have to be removed.
3. Machine the stem nut to suit the valve stem. Ensure sufficient clearance to avoid unnecessary wear and heating
during operation.
Reassembly – Units MX-140
Refer to Figure 3.9.
1. Clean the stem nut, washers, and bearing(s) thoroughly.
2. Remove pipe plug.
3. Slide second set of thrust washers and bearing in place if removed.
4. Install stem nut. Lubricate thoroughly.
5. Install first set of thrust washers and bearing.
6. Install pipe plug.
20
NOTE: Order of assembling thrust washers and bearing must be as follows: washer, thrust bearing, washer.
NOTE: Fill base with Nebula EP 0, Conoco Conolith EP 00, Dynalife-L-EP0, Mobil SHC 632, Triton ELL, or Lithium based
EP0 grease.
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Socket head
cap screw
Pipe plug
extended nut
A
Pilot installation
Slide pilot into thrust base assembly and secure with the two washers and screws. Tighten fully.
3.1.3 Type “BL” Drive: Splined Drive Application
Steel alloy splined nuts are provided to a standard involute spline category for rising and rotating stem valves per
customer requirements. Disassembly and reassembly is the same as the B4 base and the torque nut. See Section 3.1.1,
Type “B” Bases: Torque-only Applications.
Figure 3.9 – Exploded view of thrust base (MX-140/MX-150 only)
Housing
Thrust
bearing
Thrust nut
Thrust
pilot
s
O-ring
Washers
Thrust
bearing
Thrust
washers
Quad ring
Quad ring
Thrust
washers
B
Socket
head cap
screw s
Pipe plug
A
Section A-A
View shown with
standard nut
Section B-B
View shown with
B
3.2 Mechanical Installation Onto Valve or Gearbox
NOTE: Refer to MX Maintenance and Spare Parts bulletin (LMENIM2314) for more detailed instructions.
Before installing the actuator onto a valve or gearbox, check the following to ease installation:
• Verify that mounting flange is suited dimensionally to mate with the actuator base. Ensure that it is perpendicular to
the valve stem or gearbox input shaft.
• Ensure the stem nut mates with the valve stem or input shaft. For screwed nuts, it is advisable to run the stem nut
down the entire length of the stem to check for tightness. Keyed or splined shafts should exhibit a smooth, sliding fit
with the key installed.
• Ensure there is adequate engagement of the stem nut with the valve stem or input shaft when mounted. Generally, the
minimum length of engagement is 1.5 times the diameter of the stem.
• Verify that mounting studs or bolts are the correct length to suit the thickness of the mounting plate.
• Verify hardware specifications for English style:
• Socket head cap screw per ASTM A 574 and ANSI 18.3.
• Hex head cap screw per SAE J429 Grade 5.
• Verify hardware specifications for metric style: hex and socket head cap screws per Property Class 12.9.
• Clean and lubricate the valve stem or input shaft.
• Ensure adequate lifting facilities and slings are available at the installation site.
NOTE: Do not use the handwheel to lift the actuator.
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3.2.1 Mounting (Type “B” Bases): Torque-only
Refer to Figures 3.1 - 3.5.
1. Ensure torque nut is secured inside actuator drive sleeve with retaining ring.
2. Lower actuator onto the valve or gearbox stem. Align the stem nut key and keyway with valve or gearbox stem key
seat.
3. Verify that the actuator and valve mounting adapter flanges mate correctly.
4. Secure the actuator to the valve mounting adapter with mounting bolts.
3.2.2 Removal (Type “B” Bases): Torque-only
Refer to Figures 3.1 – 3.5.
1. Remove the bolts that secure the actuator to the valve mounting adapter. If type B1 base is used in addition to the
standard type B4 baseplate, you may leave the B1 base attached to the actuator and remove as a unit.
2. Lift the actuator from the actuator mounting adapter.
3.2.3 Mounting (Type “A” Bases): Thrust-only
Refer to Figures 3.6 – 3.9.
1. The following are two options for mounting the type A base actuator:
a. If the type A thrust base was removed from the valve mounting adapter, replace the thrust base onto the valve
mounting adapter. Ensure the thrust base stem nut has the lugs positioned upward to engage with the drive
sleeve slots when the actuator is reinstalled. Rotate the bronze nut while holding the base steady.
or
b. If the thrust base is installed on the valve mounting adapter, proceed to step two.
2. Lower the actuator along the threaded valve stem and onto the valve mounting plate. Ensure the thrust base stem
nut lugs properly engage and align with the drive sleeve slots.
3. Install the bolts to secure the actuator to the thrust base assembly.
3.2.4 Removal (Type “A” Bases): Thrust-only
1. Remove the bolts that secure the actuator to the thrust base assembly.
2. Remove the type A thrust base by removing the bolts that secure the actuator to the valve mounting adapter.
or
Leave the type A thrust base mounted to the valve mounting adapter until ready to remount the actuator. The thrust
base will maintain valve position provided that the valve stem threads are locking.
3. Lift the complete actuator from the thrust base.
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Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
3.3 Electrical Connections
Verify that the supply voltage details on the nameplate are correct for this installation. Setup is non-intrusive; therefore,
remove only the terminal cover to make electrical connections and to commission the actuator.
WARNING: The removal of any other covers without Limitorque’s approval will void the warranty. Limitorque
c
will not accept responsibility for any damage or deterioration that may occur as a result of cover removal.
3.3.1 Removing Terminal Cover
Remove the terminal cover as follows:
1. Remove the four cover screws using a 6 mm hexagonal wrench.
2. Remove the cover. XP units have long-spigoted covers and two tapped holes 180° apart. If the XP cover is difficult
to remove, fit two of the cover screws into the tapped holes in the cover flange and jack out the cover. Take care to
turn the screws by equal increments. Do not lever the cover off with a screwdriver, or similar object, since this may
damage the flamepath on an explosionproof unit or the O-ring seal and seating face.
3.3.2 Terminal Compartment Documents
The OEM and user installation kits, wiring diagram, and test report are contained in the terminal compartment or with
the actuator. Do not place them in the terminal compartment when the electrical connections have been completed.
NOTE: This instruction does not apply to valve manufacturers or similar installers of the actuator onto a valve prior to
shipping to site. It is important that these items are available at the final destination site.
3.3.3 Sealing Cable/Conduit Entries
The sealing of cables and conduit entries should be done in accordance with National Standards or the Regulatory
Authorities that have certified the actuators. This is particularly true for units that are certified for use in hazardous areas
where the method of sealing must be to an approved standard and cable glands, reducers, plugs, and adapters must be
approved and separately certified. All conduit entries should be sealed against the climatic conditions prevailing on-site,
especially if temporary submersion is possible. All unused conduit entries should be sealed with threaded metal plugs.
Plastic plugs are installed by Limitorque for shipping only and must not be used as permanent seals.
3.3.4 Recommended Terminal Connections
Power Terminals
Ring tongue connectors used on the power terminals should comply with the dimensions shown in Figure 3.10. For
Additional information, consult terminal manufacturer.
Figure 3.11 details the allowable voltage and current parameters for the terminal block power terminals. Preload the M5
screws to 1.6-3.2 N m (1.2-2.33 ft-lb).
Control Terminals
Ring tongue connectors used on the control terminals should comply with the dimensions shown in Figure 3.12. For
additional information, consult terminal manufacturer. Preload the M3 screws to 0.33-0.66 N m (0.25-0.50 ft-lb).
NOTE: Alternative manufacturers may be substituted only if dimensions are in accordance with Figure 3.12.
NOTE: The use of spade terminals is not recommended for secure electrical connections.
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3X M5 SCREW
3X M5 SPRING
WASHER
54X M3 SPRING
WASHER
54X M3 SCREW
FIGURE 3.13
THE USE OF THE SPRING WASHERS ARE REQUIRED
ON INCREASED SAFETY APPLICATIONS.
Figure 3.10 – Power terminal connector size limitations
MAX. THICKNESS = 1.6 mm
NOT TO
EXCEED 3.5
NOT TO
EXCEED 9.8
NOT TO
EXCEED 15
SPADE AND SNAP
TERMINALS
Figure 3.11 – Terminal block rating; power terminals
NOT TO
EXCEED 6.5
TO BE SIZED
FOR M5 SCREW
FLANGED
SPADE TERMINAL
Description L1 L2 L3
30 AMP 20 AMP 15 AMP
2
STD Rating
8 Awg/10 mm
10 Awg/6 mm214 Awg/2.5 mm
600 VAC RMS 150 VDC
27 AMP 18 AMP 13.5 AMP
Increased
Safety Rating
8 Awg/10 mm
2
10 Awg/6 mm214 Awg/2.5 mm
500 VAC RMS 150 VDC
Note: Ratings will be the same for L1, L2, or L3, e.g., if 10 Awg is selected,
then L1, L2 and L3 will have the same limitations.
NOT TO
EXCEED 15
RING TERMINAL
2
2
NOT TO
EXCEED 9.6
TO BE SIZED
FOR M5 SCREW
24
Figure 3.12 – Control terminal connector size limitations
NOT TO
EXCEED 7.6
NOT TO
EXCEED 5
SPADE AND SNAP
NOTE: All dimensions are in mm.
TERMINAL
MAX. THICKNESS = 1.0 mm
NOT TO
EXCEED 4.0
TO BE SIZED
FOR M3 SCREW
NOT TO
EXCEED 5
RING TERMINAL
NOT TO
EXCEED 8.2
TO BE SIZED
FOR M3 SCREW
NOTE: Limitorque recommends the use of the following connector for optimum results: Thomas and Betts #RZ22-6.
NOTE: Alternative manufacturers may be substituted only if the dimensions are in accordance with Figure 3.12.
Table 3.2 lists the maximum allowable voltage and current parameters for the terminal block control terminals.
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
Table 3.2 – Terminal block rating; control terminals
Low Voltage Row STD Rating Increased Safety Rating
1 points 1-16, 50 Volt 0.5 AMP AC RMS 0.45 AMP AC RMS
2 points 17-35, 125 Volt 0.5 AMP AC RMS 0.45 AMP AC RMS
3 and 4 points 36-54, 250 Volt 5 AMP AC RMS 4.5 AMP AC RMS
3.3.5 Termination of Cables
All terminations should be made with insulated ring terminals using the appropriate crimping tool. See Figures 3.10
and 3.11 for power terminal connection recommendations. See Figure 3.12 and Table 3.2 and 3.3 for control terminal
connection recommendations.
3.3.6 Cable Connections
See Figure 3.14 for connection information.
1. Connect the main power supply cables, including the earth/ground wire using the M5 screws provided.
2. Attach the earth/ground wire to the separate screw on the inside of the terminal compartment.
3. Use the M3 screws installed in the terminal block to connect the control cables in accordance with the wiring
diagram and the project specification.
4. Ensure that all connections are tight, including any spare termination screws that have not been used.
NOTE: A “Customer Connection(s) Diagram” sticker is attached to the interior of the terminal compartment cover. This
may be removed and user termination numbers inscribed adjacent to Limitorque’s terminal block numbers for field
connection reference. The diagram may also be used to assist in locating the terminal block positions. Service and
factory contacts are contained on the sticker.
Certification is based on the use of appropriately rated wire for the application. Installation shall be in accordance with
the current issue of the applicable national and or local electric code or regulations.
Table 3.3 – Required ratings for external wires
Up to Use wire rated at least
40°C Ambient 75°C
55°C Ambient 90°C
1
60°C, 65°C & 70°C Ambient
Note 1: Refer to unit nameplate.
Note 2: See section 7.3 for single phase high and low ambient FLA values
105°C
3.3.7 Network Installations
The Limitorque MX offers a number of network options: DDC-Modbus, Foundation Fieldbus H1, Profibus DP_V1,
Profibus PA, and DeviceNet.
Ensure that the network cable type is Belden 3074F, Belden 3105, Belden 9841 or another cable that is within 5% of the
following specifications.
• Nominal impedance: 120 ohms @ 1 MHz
• Line to shield capacitance: 23.0 pF/ft (75.5 pF/m)
• Line to line capacitance: 12.8 pF/ft (42.0 pF/m)
Using other cables may result in decrease of internodal distance and/or an increase in communication error.
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Particular care should be taken when terminating twisted-pair shielded cables in a control network. Avoid nicks, cuts, or
abrasions in the insulation of data communication cables, since this may result in inadvertent ground connection. Also,
excess cable should be cut, not coiled or looped, to prevent noise induction into the network.
Limitorque strongly recommends remote communication wiring be routed separately from mains line power wiring.
Specifically, instrumentation wiring, including communication, analog and discrete signal wiring, should be routed
in conduit that is separated from power lines. If the recommendation is not followed, the intergrity of instrumentation signals may be comprimised. If the signal is comprimised, the MX will enter a“safe-state” whereby all motion is
prohibited until communication is sucessfully re-established.
Figure 3.13 – View of terminal block
Figure 3.14 – Standard wiring diagram illustrating 3 phase motor voltage applied.
NOTE: Most current wiring diagram is shipped within the terminal compartment of the MX.
Reversing
Motor
contactor
Dig Com #1-Ve
*
Control
supply
Aux.
input
(Optional)
Close inhibit/
interlock Input 1
Open inhibit/
interlock Input 2
Dig Com #2-Ve
E.S.D. Input 0
Dig Com #3-Ve
110 VAC
24 VDC +Ve
24 VDC +Ve
FS1 FS2
FS3
LimiGard
Power
board
Jumpers may be added to connect digital commons - pt. 28 & 29, 31& 32
*
Note: 110 VAC control supply from actuator is optional.
Close
Stop
Open
0 VAC
0 VDC
0 VDC
PE
L1
L2
L3
Three-phase supply
27
26
25
28
35
34
29
30
32
23
24
22
21
6
7
Main processor board
REMOTE
STOP
LOCAL
Limitorque
Control panel
Torque
sensor
OPEN
(YES)
(NO)
CLOSE
Position
sensor
Circuit shown with valve in fully
closed position and with power off.
Status feedback
output switches
Default setting
“ CLOSE ”
position
“ OPEN ”
position
“ CLOSE ”
position
“ OPEN ”
position
Monitor relay
Show n
with
power
supply off
44
S1a
45
48
S1b
49
46
S2a
47
50
S2b
51
54
53
52
View of terminal block
Grounding lug
Cable Preparation
Prepare the network cable for connection to the MX actuator terminal block as illustrated in Figures 3.15 through 3.18.
CAUTION: Strip stranded conductors carefully; do not damage the strands. This will weaken the conductor.
26
a
Do not nick conductors when stripping away the insulation. Nicking stresses the conductor and can cause the
conductor to break. This type of damage may not be apparent and failure can occur later without warning.
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
1. Remove 2 to 3 in. (5 to 8 cm) of the outer plastic jacket as shown in Figure 3.15. Do not cut or nick the drain wire
or the insulated conductors.
Figure 3.15 – Removing outer plastic jacket
2. Separate the cable parts. Unbraid the braided shield and peel back the foil shield to the same point where the outer
jacket was removed as shown in Figure 3.16.
3. Cut away the braided shield and the foil shield. Strip the insulation from the conductors approximately ½ inch (1
cm) as shown in Figure 3.17.
4. Apply heat shrink tubing to insulate the drain wire and to provide stress relief to the cable.
5. Install ring tongue connectors as shown in Figure 3.18.
CAUTION: Do not melt the insulation.
a
6. Connect the network cables to the MX actuator terminal block per Table 3.4 and appropriate wiring diagram. Table
3.3 details a connection for the loop topology.
Figure 3.16 – Separating cable parts
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Figure 3.17 – Stripping conductors and applying heat shrink tubing
Figure 3.18 – Ring tongue connectors
28
Table 3.4 – Loop topology connections
Terminal Block Number DDC
4 DATA-A1* (-)
5 DATA-A1 (+)
14 DATA-A2* (-)
13 DATA-A2 (+)
3 Surge Protection
In terms of voltage, DATA is negative with respect to DATA*.
NOTE: Surge protection must be grounded to be effective.
NOTE: Ground each segment of the cabling at only one point to prevent ground loops, which can affect system
performance. Verify the actuator is properly grounded.
Limitorque defines an effective local earth ground as the M3 taps on the housing next to the terminal block. See figure
3.21.
NOTE: Safety ground may not be disturbed.
NOTE: Shielding is not sufficient to prevent induction of stray voltages onto signal leads from the power lines.
A network wiring diagram for a loop is shown in Figure 3.20.
Limitorque ® MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
After installation is complete and prior to operation, inspect the network cable and its connection to each field unit for
the following:
There should not be:
• Nicks in the insulation—this can cause a short to the grounded shield.
• Cut strands in a stranded conductor—this can cause a poor connection and eventually an open circuit.
• Cable armor shorted to the cable shield/drain wire—this may not be at ground potential and could be subject to
lightning surges.
• Shield/drain wire grounded at more than one end of each cable segment (the section between each adjacent actuator
on the loop). This will avoid ground loop problems.
• Ground/earth connection except at true ground potential and effective at all times.
3.3.8 Foundation Fieldbus Installation
Ensure that the Foundation Fieldbus cable type is Belden 3076F, or another cable that is within 5% of the following
specifications.
• Characteristic impedance: 100 ohms @ 31.25 kHz
• Resistance, each wire: 7.32 ohms/1000 ft
• Attenuation: 0.914 dB/1000 ft @ 39 kHz
• Capacitative Unbalance: 3.6 pF/ft
Using other cables may result in decrease of internodal distance and/or an increase in communication error.
Particular care should be taken when terminating twisted-pair shielded cables in a FF control network. Avoid nicks, cuts,
or abrasions in the insulation of data communication cables, since this may result in inadvertent ground connection.
Also, excess cable should be cut, not coiled or looped, to prevent noise induction into the network.
Cable Preparation
Prepare the network cable for connection to the MX actuator terminal block as follows in Figure 3.15 through 3.18.
Table 3.5 details connections for Foundation Fieldbus.
Table 3.5 – Foundation fieldbus connections
Terminal Block Number FF Function
4 DATA (-)
5 DATA (+)
The shield must be connected to ground or earth at only one place. The cable shield is generally grounded at the power
conditioner.
Reference the Fieldbus Foundation Application Guide 31.25 kbit/s Wiring and Installation guide for more information on
network wiring.
CAUTION: Strip stranded conductors carefully; do not damage the strands. This will weaken the conductor.
a
Do not nick conductors when stripping away the insulation. Nicking stresses the conductor and can cause the
conductor to break. This type of damage may not be apparent and failure can occur later without warning.
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3.3.9 Network Wiring – Profibus DP/PA Installation
Profibus DP is based on RS 485 communication. The standard EN 50170 specifies the cable for use with Profibus DP.
The following specifications need to be fulfilled by the Profibus cable:
Table 3.6 – Profibus cable specifications
Parameter Type – Profibus DP
Impedance 135 to 165 ohm/3 to 20 MHz
Capacity < 30 pF/m
Resistance < 110 ohm/km
Wire gauge > 0.64 mm
Conductor area > 0.34 mm
The Profibus DP cable is a shielded twisted pair cable.
In general, there are two different types of cables available. The most commonly used cable has solid wire for the
Profibus line. When there is a need for more flexiblity (bending) and higher environmental resistance, a cable with
stranded wire for the Profibus line and special jackets shall be used. Limitorque recommends the use of:
2
• Belden 3079A Specifications, 22 AWG, shielded, solid two conductor
Key Specifications
• Capacitance/ft = 8.5 pF
• Nominal Impedance (ohms) – 150.0
Network Wiring - Profibus PA
Please refer to IEC 61158 & ANSI/ISA S.50.02 Part 2-1992 for network wiring guidelines. Refer to Table 3.5 for
connections.
3.3.10 Network Wiring – DeviceNet
DeviceNet is a CAN-based protocol that uses five wires including a shield. Two of the conductors are used for 24 VDC
power and up to 8 amps (4 amps for NEC Class 2) may be passed along the hi-way from a suitable power source. Two
conductors are used for the CAN bus signals, CAN_H and CAN_L, which are usually smaller in diameter. Flowserve
recommends Belden 3082A cable for connecting to a DeviceNet network. The specifications for this cable are preferred.
Table 3.7 – DeviceNet cable specifications
Belden
Part No.
3082A
AWG (Stranding)
dia. Inches
Nom. DCR
2 – 15 AWG (19 x 28)
3.6 ohm/1000 ft
11.8 ohm/km
2 – 18 AWG (19 x 30)
6.9 ohm/1000 ft
22.7 ohm/km
Insulation
material
(color code)
Power pair
(Black/Red)
Data pair
(Blue/White)
Nominal
O.D.
12.2 mm 120 12.0 pF/ft
Nom
Impedance
(ohms)
Nominal
Capacitance
Test
Frequency
(MHz)
0.125
0.5
1
Maximum
Attenuation
dB/100ft
0.13
0.25
1.36
2 – 22 AWG (19 x 34)
17.5 ohm/1000 ft
30
3084A
57.4 ohm/km
2 – 18 AWG (19 x 36)
28.0 ohm/1000 ft
91.9 ohm/km
Power pair
(Black/Red)
Data pair
(Blue/White)
7.2 mm 120 12.0 pF/ft
0.125
0.5
1
0.29
0.50
1.70
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