Flowserve MX-100 Field Unit Manuel d'utilisateur télécharger pdf (Page 9)

MX/DDC-100 Field Unit Installation and Maintenance FCD LMENIM2329-01 – 03/11

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2.2.1 MX Actuator

The MX is a multi-turn valve actuator designed for operation of ON-OFF and modulating valve applications. This

actuator controls the opening and closing of valves. See Figure 2.1.

Features of the MX include:

Non-intrusive setup•

Separately sealed terminal chamber•

Absolute encoder for valve position sensing (no battery required) •

32-character graphical LCD display with 180° rotation •

Sophisticated electronic control, monitoring, and diagnostic capabilities with LimiGard™ technology •

2.2.2 DDC–100 Field Unit

The DDC-100 ﬁeld unit is installed in the MX controls compartment. This unit permits the actuator to be controlled by

a host controller or Master Station II via the DDC-100 network. The ﬁeld unit includes two high-level, surge-protected,

and isolated network communication channels, conﬁgurable digital I/O, and conﬁguration via LCD screen. The

following commands and information may be transmitted over the DDC-100 network:

“• OPEN,” “STOP,” and “CLOSE” commands

“• ESD” and “MOVE–TO” position commands

Actuator status and alarm messages•

Six digital inputs and two analog inputs for user (see • Table 2.2, Register Deﬁnitions)

Two surge-protected and mutually isolated communication channels•

MX local control panel conﬁguration•

Torque output (for reference only) and position feedback•

User’s analog input feedback•

Nine digital outputs maximum (three standard/six optional)•

Figure 2.2 – DDC-100 ﬁeld unit

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Flowserve MX-100 Field Unit Manuel d'utilisateur Page 9