Electric Actuators

The Electric Actuator Series are a robust range of 1/4 Turn Actuators available tosuit On / Off , Modulating and Spring Return functions. When receiving and installing the Electric Actuator it is important to follow all safety instructions listed in the operations manuals and below to prevent any series injury, equipment damage or voiding of warranty.

All installation, maintenance, calibration and repair works must be performed by competent trained personnel.
The End User and Installer shall follow all safety, warning instructions and detail listed in the operations manual before attempting to install or operate the Electric Actuator. Process Systems will not be liable for damages due to operator negligence or misuse.
The installer is to verify that the supply voltage is in accordance with the data on the nameplate of the actuator and all electrical connections are as per the wiring diagrams listed below and inside the cap of the acutator. Failure to do so may result in short circuit or electrical/electronic parts being damaged by the incorrect power input.
Turn off power to the actuator before undertaking any electrical or maintenance works. Ensure a ground wire is connected to the PE point inside the Electric Actuator. To avoid functional failure from static, do not tough any components on the PCB with Metal Tools or Bare Hands.
When wiring multiple actuators together, an extra relay or Isolating Relay Module (Contact Sales) must be used.
The installer is to follow proper techniques and suitable IP rated cable glands when installing the wiring to the actuator to properly seal the connection. Failure to do so may allow condensation to form or external moisture to enter the actuator. Actuator is to be mounted in a position where the cable glands are not facing up and the Actuator is in an upright or horizontal position. It is not recommended to use the actuator in an upside down configuration or a configuration below horizontal.
These actuators are not designed to be used in a vacuum environment.

When the Actuator is not being supplied with a valve from Process Systems, it is recommended to ensure the Actuator is appropriately sized to match the ISO5211 Pad dimensions, shaft sizes and most importantly the valve torque. It is also important to consider the duty cycle of the valve to ensure the Actuator is not in danger of burn out / Electrical Failure. To ensure the actuator is capable of meeting the torque requirements of the valve, it is recommended to include a 30% Safety Factor on top of the valve torque.

For Example, a valve with a torque of 80Nm, the calculation is as follows,

The calculated 104 Nm is less than the 150 Nm of the 0M-3 Actuator and above the 90 Nm of the 0M-2. In this case the 0M-3 would be selected.

The Duty Cycle of the Actuator is the relationship between the running time and resting time. The Duty Cycle and the Resting Time (seconds) for a cycle of the actuator can be calculated using the following formulas.