Line contactor

A line contactor is used for galvanic separation of the axis system and the supply system. Separation from the supply system is needed in order to carry out electrical work on the axis system, for example.

Pay attention to the following specifications:

• Only use line contactors in utilization category AC-3 (IEC 158-1) or better.
• The line contactor must be located upstream of the line filter.
• Do not use the line contactor for jog mode.
• Formula for calculating the phase current I_L1 = I_L2 = I_L3 = I_B × 2/3 + 0.5 A

Operation of the MDP92A power supply module is possible without a line contactor.

INFORMATION

The integrated lock of the DC/DC converter for MDP92A power supply modules does not galvanically separate the axis block from the supply system, and therefore does not de-energize it. If the axis block needs to be de-energized to carry out electrical work, for example, it must be switched off using a main switch, for example. Switching off always takes place in a system-specific way depending on the specific application, and taking the applicable regulations into consideration.

• Switched-mode power supply module with AC and DC supply