Tree pruner

A tree pruner comprising:

• a pruner body comprising a first body section and a second body section spaced apart in a longitudinal direction of the pruner body;
• a blade system connected to the first body section, the blade system comprising a first blade and a second blade adapted to co-operate with each other for cutting branches, wherein the first blade and the second blade are adapted to move relative to each other such that the blade system has a blades-open position and a cutting position;
• an electric motor connected to the second body section, and adapted to provide driving power for the blade system, wherein rotation of the electric motor in a first direction is adapted to provide a cutting action in which the blade system moves from the blades-open position towards the cutting position;
• a control system adapted to control the electric motor;
• and
• a transmission system adapted to transfer power from the electric motor to the blade system, the transmission system comprising a transmission rope, wherein a first end of the transmission rope is connected to the blade system, and a second end of the transmission rope is connected to the electric motor such that rotation of the electric motor in the first direction is adapted to pull the first end of the transmission rope towards the second body section in the longitudinal direction,
• wherein the tree pruner comprises a tension management system adapted to detect a slack rope situation in which tension of the transmission rope is below a predetermined limit value, and the control system is adapted to prevent rotation of the electric motor in a second direction opposite to the first direction as a response to detection of the slack rope situation;
• and
• wherein the tension management system comprises at least one spring-loaded rope tensioner, wherein the tension management system is adapted to detect the slack rope situation based on a position of the at least one spring-loaded rope tensioner.