Thomas & Betts Limitorque MX Device Net Field Unit System Components, Introduction, Hardware

Limitorque MX DeviceNet Field Unit  FCD LMENIM2328-00 – 11/05

2 System Components

2.1Introduction

This section gives an overview of the components used in the DeviceNet system. The field unit is installed in each MX actuator. The network cable connects the field unit to the network via the actuator terminal block. The network cable is connected to a host controller, typically a PLC.

2.2Hardware

NOTE: Recommended storage procedures are detailed in Bulletin LMAIM1314 Limitorque MX Maintenance and Spare Parts Manual. Failure to comply with recommended procedures will void the warranty. For longer-term storage, contact Limitorque for procedures and recommendations.

Figure 2.1 – MX-05 Actuator

		1
		3	2
	12
11
10
		4
		5		2
9	8	7	6
Table 2.1 – MX-05 Actuator
1	Handwheel
2	Declutch Lever
3	Oil Fills (dotted arrow depicts fill on declutch side)
4	Controls Compartment (field unit location)
5	LCD Display
6	Control Knobs
7	Ground Lug
8	Thrust/Torque Base
9	Conduit Entries
10	Terminal Compartment
11	Motor
12	Nameplate
2.2.1	Limitorque MX

	The MX is a multi-turn valve actuator designed for operation of ON-OFF and modulating valve applica-
10	tions. This actuator controls the opening and closing of valves. See Figure 2.1.