ST 2-A – electric linear actuator

Standard equipment

• Supply voltage 230 V AC
• Terminal board connection
• 2 thrust switches
• 2 position switches
• 2 additional position switches
• Mechanical connection – pillar
• Mechanical position indicator
• Manual control

Additional equipment

• Supply voltage 220 V AC, 3×400 V AC, 3×380 V AC
• Reverse contactors
• Transmitter:
  – potentiometer: 1×100 Ω, 1×2000 Ω
  – electronic position transmitter 0/4 – 20 mA, (passive/active)
  – CPT (capacitive) 4 – 20 mA, (passive/active)
• Space heater with thermal switch

Documents for download

• General conditions
• Technical data sheet

Príspevok Electric linear actuator ST 2-A zobrazený najskôr MARVEL P.I.&T. | MARVEL-BMT | Electric actuators.

STR 2 PA – electric linear actuator

Standard equipment and functions of the actuators with DMS3

• Supply voltage 230 V AC
• Terminal board connection
• Protection of the motor against overheating
• Switching off in limit positions from the position or thrust
• Adjustable switching-off thrust from 50% to 100%
• Torque (thrust) blocking in limit positions
• Torque (thrust) blocking during the start
• 2 freely programmable relays RE1, RE2
• Relay READY
• Control by unified  signal 0/4 – 20 mA, 4 – 12 mA, 12 – 20 mA, or 0/2 – 10 V (not for DMS3 in 2P version)
• Control voltage for remote control 24 V DC (Open-Stop-Close)
• Impulse control (inching duty)
• Timing mode / regime of operation
• Safety function ESD (failure reaction)
• Electronic position transmitter 4-20 mA passive  (not for DMS3 in 2P version)
• Auxiliary voltage output 24 V DC, max. 40 mA for supply of the control inputs
• Output for failure messages
• Space heater operated by control unit
• LED position indicator
• Communication interface RS 232
• Programme for parameters setting by PC
• Mechanical position indicator
• Mechanical connection – pillar
• Manual control

Additional equipment of actuator with DMS3

• Supply voltage 3×400, 3×380, 240, 220, 120, 24 V AC
• Additional relays R3, R4, R5
• Local control
• Version with stand, lever and pull-rod

Príspevok Electric linear actuator STR 2 PA zobrazený najskôr MARVEL P.I.&T. | MARVEL-BMT | Electric actuators.