Specifications

6
MX Protection, Control and Monitoring Features FCD LMENTB2300-01 – 07/08
Yellow “BLINKING” = Monitor Relay de-energized, actuator not available for remote operation.
Blue LED•
Bluetooth option enabled and link established
1.3 Remote Control Modes of Operation
The actuator may be controlled remotely by two, three or four wires.
Four-Wire Control• – Three momentary contacts. Valve can be opened, closed or stopped.
Two-Wire Control• – Single open or closed contact. Valve can be opened or closed, but not stopped
in mid-travel.
Three-Wire Maintained• – Two momentary contacts for self-maintained control. Valve can be
opened or closed but not stopped in mid-travel.
Three-Wire Inching• – Two “push-to-run” contacts. Valve can be opened, closed and stopped in
mid-travel.
Refer to Figure 12.5 for remote wiring connections.
Remote Control Type
The actuator may be placed in digital only, modulation only, network only, or multi-command types.
Digital Only Control Type• – Only digital input commands are recognized and acted upon. All other
types of remote control commands are ignored.
Modulation Only Control Type• – Only Modutronic 4-20 mA (optionally 0-20 mA) commands are
recognized and acted upon. All other types of remote control commands are ignored.
Network Only Control Type• – Only network (DDC, Fieldbus, Profibus, Device Net) commands are
recognized and acted upon. All other types of remote control commands are ignored.
Multi-command Type• – All remote control command types are recognized and acted upon, on a
“last command in” basis.
MX Multi-control Mode Operation• - there are three modes of remote control when remote mode
is configured for multi control: digital control, analog control, and network control. Digital and
network control operation is based on the last command received. Analog operation is initiated by
either toggling user input 2 (configure for CSE input) or breaking & reapplying the analog control.
Remote Control Signal Power
Power for remote control signals may be derived internally from the actuator or provided externally
by the user. Signals can range from 24 to 125 VAC or VDC.
External Power Supply
An external power supply in the range of 12 to 24 VDC may be provided by the user.
Standard Internal Power Supply
The standard internal signal supply is 24 VDC. The 24 VDC supply offers a maximum loading of 5 W.
The 24 VDC supply, in conjunction with the opto-isolated digital inputs, allows control from remote
volt-free contacts over long distances and simplifies the user’s control scheme. An optional 120 VAC,
15 VA internal power supply is available (consult factory). Standard control employs a negative earth.
Positive earth (negative switching) is available by wiring to the (+) positive common as shown on the
wiring diagrams.