2 Product Specification
Linear actuators MC55
8 Version 3.3 - November 2014 Operating Manual
2.3.2 Blockage detection
When the linear actuator is mechanically blocked the blockage detector will turn
off the motor as soon as one of the two limit positions have been reached or a
blockage occurs due to overload.
2.3.3 Wire break detection MC55Y
Wire break detection is only available for continuous mode with an input signal
2 … 10 V DC and 4 … 20 mA.
The linear actuator moves to the limit position set by jumper JP2 if the input signal
drops below 1 V or 2 mA.
5.5 Setting the limit position for MC55Y on page 21
2.3.4 Actuating time
The time required for the spindle nut to travel a defined distance is called
actuating time. Actuating time is specified in s/mm. Jumper JP3 on the plug-in
jumper wire is used to set the actuating time.
5.3 Setting the actuating time on page 19
2.3.5 Manual operation
In manual mode it is possible to change the stroke without supply voltage.
• Motor and control electronics are turned off in manual mode to make hoisting
movements of the control impossible.
6.1 Changing between manual and automatic mode on page 22
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