The majority of automated applications are two position. The driven device is either at one or the other extreme of travel. In general, this is mild duty for an actuator. Conditions such as rapid cycling, temperature extremes and vibration will place additional consideration upon the selection of a product.

Mpac: Designed as a cost-effective actuator and drive for general control applications, the Mpac offers 2% resolution, hard positioning and multiple modes of operation. The self-contained configuration and digital calibration make the Mpac quick to install and simple to wire with a single-step pushbutton setup. The no-maintenance Electraulic™ power module, total solid state controls and optional spring failure bring a dimension of safety and reliability not found in other electric units.

For two position operation, the Mpac utilizes a single, low level (24-115 vac. 10 mA or dry contact) control signal. When the signal is present, the actuator is at one end. Withdraw the signal and the unit moves to the opposing limit. The position for a signal may be easily reversed during setup.

A batch process will usually utilize two position valves. Consistent, repeatable and immediate response is the key to in-flight material content and successful batching. The Mpac is the ideal actuator for this type of operation. The hydraulic circuit provides exacting motion throughout the stroke regardless of material composition or load variation.

Complete specifications are listed in the product bulletins:
Mpac, Linear, Rotary & Drive

Additional information on the Mpac:

• STROKING SPEED- Xpac, Mpac
  The tortoise or the hare, both are winners with REXA/koso america inc
• SPRING FAILURE
  Security in the event of a power outage (also see PM21-2)
• LIMIT SWITCHES
  Electronic (adjustable to any position with no hysteresis) and conventional mechanical
• AUXILIARY CONTROL
  Pushbutton override on the front of the enclosure or at a remote location