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TECHNICAL BULLETIN
Limitorque MX/QX Actuators
Protection, Control and Monitoring Features
FCD LMENTB2300-03 – 01/11

Experience In Motion

MX/QX Protection, Control and Monitoring Features FCD LMENTB2300-03 – 01/11

Table of Contents
Section
1. Standard Control Features
1.1 Basic Specifications
1.2 Local Control
1.3 Remote Control Modes of Operation
1.4 Emergency Shutdown (ESD)1.5 Remote External Interlocks/Inhibits
1.6 MX Absolute Position Encoder
1.7 QX Absolute Position Encoder
2. Protection Features
2.3 Optional Control Features
3. Network Communications
3.1 DDC (Distributed Digital Control) Communication – Modbus™
3.2 Master Station III
3.3 FOUNDATION Fieldbus Communication
3.4 PROFIBUS DP V1 Communication
3.5 PROFIBUS PA Communication
3.6 Device TypeManager (DTM) for Profibus DP & PA
3.7 DeviceNet
4. Monitoring and Diagnostic Facilities
4.1 Local Facilities
4.2 Diagnostics
5. Remote Facilities
5.1 Actuator Status Contacts (S1a, S1b, S2a, S2b)
5.2 Monitor Relay (SM)
5.3 Optional Alarm Status Contacts (R1, R2, R3, R4, R5, R6, R7, R8)
5.4 Exact End Position Indication
6. Auxiliary Power Supply
7. Isolated Commons
8. Bluetooth® WirelessCommunications and MX/QX Dashboard™ Software
8.1 Frequency Domain Analysis
9. Actuator Configuration
9.1 Non-Intrusive Local Configuration
9.2 Default Configuration
10. MX and QX Specifications
11. Wiring Configurations for the MX and QX
11.1 MX/QX Terminal Block
11.2 Wiring Diagram Matrices
12. MX and QX Wiring Diagrams
13. Network Protocol Connections
13.1 Network Wiring – DDC-Modbus
13.2Network Wiring – FOUNDATION Fieldbus H1
13.3 Network Wiring – Profibus DP and PA
13.4 Network Wiring – DeviceNet

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MX/QX Protection, Control and Monitoring Features FCD LMENTB2300-03 – 01/11

Figures and Tables
SectionFigure 1.1 – MX/QX Control Panel
Figure 1.2 – MX Absolute Position Encoder
Figure 1.3 – QX Absolute Position Encoder
Table 2.1 – Speed Control
Figure 8.1 – FFT of a sound, efficient worm gear set
Figure 8.2 – FFT of an actuator exhibiting a specific component that is out of tolerance due to
excessive wear
Figure 8.3 – FDA analysis can be performed at the actuator and is included in its
ViewDiagnostics menus
Figure 8.4 – Normal and Diagnostic Displays
Figure 9.1 – Default Configuration Guidelines
Figure 9.2 – Configuring the MX or QX Actuator
Table 10.1 – European Directives
Figure 11.1 – MX/QX terminal block
Figure 12.1 – Standard Wiring Diagram for MX/QX Actuators
Figure 12.2 – Optional Features Wiring Diagrams
Figure 12.3 – DDC, FOUNDATION Fieldbus, Profibus DP_V1, RedundantProfibus DP_V1,
and Profibus PA, and DeviceNet Network Wiring Diagrams
Figure 12.4 – DDC, FOUNDATION Fieldbus and Profibus Optional Features Wiring Diagrams
Figure 12.5 – Remote Wiring Connections
Figure 13.1 – Typical Modbus Network Wiring Diagrams – Single Loop
Figure 13.2 – Typical FOUNDATION Fieldbus Network with DCS or PLC as the Host System
Table 13.1 – Specifications for the Profibus DPcable
Table 13.2 – Specifications for the Profibus PA cable
Figure 13.3 – PROFIBUS Distance vs. Baud Rate Chart
Figure 13.4 – Typical Profibus System with a DCS Host (Daisy Chain Shown)
Figure 13.4a – Typical PROFIBUS DP Network with Redundancy Option (Single Master)
Figure 13.4b – Typical PROFIBUS DP Network with Redundancy Option (Dual Master)
Figure 13.4c – Typical PROFIBUS PA Network
Table13.3 – Belden Cable Specifications
Table 13.4 – Total cable length between repeaters or nodes:
Figure 13.5 – Typical DeviceNet Network

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Typical Foundation Fieldbus
Network with DCS
or PLC as the Host
System

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